Develop Bugs

Solar charger project

Just want some opinions and ideas from people here since this place gets ALOT of people visiting and alot are clearly pretty intelegent.
Bascially i bought a car solar trickle charger that has an output of 4 watts and 18volts, my plan is to attach a female car socket to it plug a car charger into that, stick the solar panel in some light and plug the phones/mp4 players ect ect usb to the car charger and get some free daytime energy.
Possible? stupid? too good to be true?
This is the little adapter id plug the car charger into this adapter will be connected to the solar panel by alligator clips.
This is the charger it self made to trickle charge a car battery but im hoping that in some light itll have enough output to charge a phones battery and similer devices.
MOD EDIT: REMOVED EXTERNAL LINKS

No one has anything to say?

i'm already using a solar charger
just buy a solar battery backup from Deal Extreme
let it charge under any light source
then hook up your phone to it
done, presto, clean and simple
and you get to choose any size capacity that you want
i got a 4700 mAh

AllGamer said:
i'm already using a solar charger
just buy a solar battery backup from Deal Extreme
let it charge under any light source
then hook up your phone to it
done, presto, clean and simple
and you get to choose any size capacity that you want
i got a 4700 mAh
Click to expand...
Click to collapse
Iv already experienced that and they are crap, the solar cell is so small on ALL of them that charging takes days even tho its listed that itll be fully charged in a day which is utter crap since its an impossibility no matter how much sun because of the output of the solar cell and the battery they stick inside is a generic li-ion battery that wears out very quick.
one i had was a 1900mah battery and the other was 3200
mah or something and even when they were fully charged for days that couldnt fully charge any device..
This is why i want something that can fully charge a device directly from the sun rather than having to store the charge in order to charge anything, later on i can hook up a battery and a diode to store some of that power but for now i want something that isnt a lie and will just work.
edit: oh i thought you meant one of those mini solar chargers that trickle charge a battery all day sorry, yeah my plan is to store the charge from these two huge solar cells hopefully it will directly charge my devices without a battery tho.

Got some solar cells at home, was gonna try this, but need to find em first

cdesai said:
Got some solar cells at home, was gonna try this, but need to find em first
Click to expand...
Click to collapse
Neat, i think to use thise you would just have to link some together attach then to a wire -to a diode- to a wire-toa battery and then hook that battery to what ever you want to charge.If youclink enough up you maybe able to charge a device direct from the sun.
Sent from my LG-P990 using XDA Premium App

eraldo said:
Just want some opinions and ideas from people here since this place gets ALOT of people visiting and alot are clearly pretty intelegent.
Bascially i bought a car solar trickle charger that has an output of 4 watts and 18volts, my plan is to attach a female car socket to it plug a car charger into that, stick the solar panel in some light and plug the phones/mp4 players ect ect usb to the car charger and get some free daytime energy.
Possible? stupid? too good to be true?
This is the little adapter id plug the car charger into this adapter will be connected to the solar panel by alligator clips.
http://www.ebay.co.uk/itm/330618443235?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649
This is the charger it self made to trickle charge a car battery but im hoping that in some light itll have enough output to charge a phones battery and similer devices.
http://www.ebay.co.uk/itm/280746752001?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649
Click to expand...
Click to collapse
You might want to checkout this thread. None stop solar powered HD2
also you might want to PM XDA Senior Member facdemol as he really knows hos stuff.

the more advanced version of this is what i'm using http://www.dealextreme.com/p/4200ma...ry-pack-for-cell-phones-and-usb-gadgets-40210
i've charged my phone and several other devices using this
it's great for camping days, or when you know there's no power outlet in the next 100 KM
eraldo said:
Iv already experienced that and they are crap, the solar cell is so small on ALL of them that charging takes days even tho its listed that itll be fully charged in a day which is utter crap since its an impossibility no matter how much sun because of the output of the solar cell and the battery they stick inside is a generic li-ion battery that wears out very quick.
one i had was a 1900mah battery and the other was 3200
mah or something and even when they were fully charged for days that couldnt fully charge any device..
This is why i want something that can fully charge a device directly from the sun rather than having to store the charge in order to charge anything, later on i can hook up a battery and a diode to store some of that power but for now i want something that isnt a lie and will just work.
edit: oh i thought you meant one of those mini solar chargers that trickle charge a battery all day sorry, yeah my plan is to store the charge from these two huge solar cells hopefully it will directly charge my devices without a battery tho.
Click to expand...
Click to collapse

Charging directly from the sun seems to work for some devices but not others, anyone help me wire up a set of rechargable batterys to store that energy and a system to feed that power into my phones mp4 player ect?

Moved

orb3000 said:
Moved
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Click to collapse
Yes thank you so much for coming and ruining my thread how is anyone supposed to help when they cannot see what it is im talking about... i read the rules and dont see anything about it being agaisnt the rules to post external links... iv seen a million threads that have links just like that.
Even tho this thread has been up for ages thank you so much for only now coming and destroying it, you doing a great job well done.

Best portable battery?

Hi all,
I'm wondering if anyone has any experience with portable battery packs. I don't mean extended batteries either. I mean the universal usb charger kind that packs several thousand mAh.
I'm looking to get one for a nine hour flight, and I want to know what is a good brand.

Luuthian said:
Hi all,
I'm wondering if anyone has any experience with portable battery packs. I don't mean extended batteries either. I mean the universal usb charger kind that packs several thousand mAh.
I'm looking to get one for a nine hour flight, and I want to know what is a good brand.
Click to expand...
Click to collapse
I can't answer your question, but a lot of planes have a USB/charging input now. I know when I fly Air Canada, they have it.

I have had an Energizer XP18000 for about 3 months now and it has surpassed my expectations.
It holds 18000 mAh of power and will charge my Gnex and my Xoom at the same time (need to order a special tip for the Xoom/non standard device). I use it for long train rides to keep my phone topped up.
When watching HD video over 4G my battery level will drop about 1-2% every half hour, so it is not charging as fast as the wall charger, but it is enough to keep you from having a dead battery when you get to your destination. With my usage I can go 3 to 4 days and never need to look at a wall outlet.
The size is about as big as a external hard drive. There is also a wall charger that has a good size power brick in the middle of it. You can remove it when you don't need the wall charger, but I keep everything in one small bag so all I have to do is set it down next to an outlet and top up the external battery, then fold the cord into the bag and pull out what ever cord I need when I am on the move. It works just fine with the original Samsung usb charging cable.
I picked mine up from Amazon but you might be able to find a better deal if you look hard enough. They make a smaller model too that is only 8000 mAh.
I always keep it in my bag and it works so well for me that I don't even need the extended battery and leave 4G on all the time.
http://www.energizerpowerpacks.com/us/products/xp18000/

Beautiful. Thanks Dante. And yeah, I heard some planes have USB chargers now. Unfortunately I'm not flying with them. I live near YVR, but Air Canada is having a bunch of problems with their workers right now. Last thing I need is flight delays or bad service.

I did a ton of research before buying mine. I wanted a pocket sized one, that had large capacity (enough to fully charge the phone twice), and could charge a device at a full 1 amp. After much research, I bought the original version of this one:
http://www.newtrent.com/store/iphone-external-battery/iphone-battery-imp50d.html
Mine has less markings and I believe both ports on mine are 1 amp, where as the new one has one 500mA and one 1A port. Mine was also like $55, this one is on sale for barely over $40, an even better deal.
It is very powerful - 5,000 mAh will charge the phone 3+ times - much bigger than other "pocket batteries", fits in a pocket nicely (I wear cargo pants) because it's skinny, like a deck of cards. Fairly light too. Only complaint is that I bought it before MicroUSB became the new standard, so it charges with miniUSB instead.
I carry a retractable mini-usb cable, and a retractable microUSB cable, in an altoids tin, in in my pocket with it. Works great, can charge my friends phones at the same time as me. Had it for 2 years, still going strong!
There are newer designs they have now too if you look at their website.
It does take a long while to charge - 8 hours to charge fully or so if you charge off a 500mAh USB port, because it's a huge battery! a lot less maybe 4 hours if you charge off a high speed 1A charger.

i was looking at this one http://www.amazon.ca/Anker-8400mAh-...UTF8&coliid=I3IVVC4G6YETK&colid=1ILTNQ88L4FE5
it has a 2amp 5v port, this can charge a transformer prime with the screen off.

I got this one recently:
http://www.amazon.com/Anker-SlimTal..._1_2?s=wireless&ie=UTF8&qid=1335035472&sr=1-2
Its (much) smaller than my Nexus, has a built in micro-usb cable, and charges via micro-usb as well. While it doesn't have the capacity of those listed above (only 3200mAh), it was only $20 and the size really does let you take it everywhere.
It can fully charge it the phone from dead about 1.5 times.
I bought mine due mainly to the fact that it includes the micro-usb cable that hides away when not in use. It has a standard USB port as well for charging other items, but the appeal of only having to carry one item and no extra cable sold me.
My only complaint is that the built in cable could be a bit longer.
It has a flashlight too... lol

Been researching this topic lately and found that Anker's 10,000mah external battery is looking the best
Sent from my i9250 (GSM) Galaxy Nexus.
[email protected]

I use the Veho Pebble and it's fine for my needs. I get 2 charges out of it.

after hours of my own research I also bought the Anker Slimtalk. I dont travel enough to need one that is huge and can charge my phone 8 times. This seems small enough to toss in my pocket and not bother me since its so thin and light. For $20 and the convenience of having its built in micro usb cable sounds like a perfect little invention to get me through the day.
If I traveled more I would of probably got the Energizer XP8000. Their tip program is awesome. Free tips for life but really its $2 shipping each. if you want this device to charge a whole bunch of things it can. My Acer netbook, EVO 3D, girlfriends RAZR, 3DS, bluetooth, iPad 2, Nook, and the list goes on. I've been trying to ask New Trent for almost a week if their products would be compatible with the Energizer Tip program but found that contrary to what I've read their customer support is terrible, but their prices are better than energizer. So they loose out on the sale since over the last few times of researching has allowed me to find the Slimtalk which for the price and for my needs is perfect.

Curb71 said:
after hours of my own research I also bought the Anker Slimtalk. I dont travel enough to need one that is huge and can charge my phone 8 times. This seems small enough to toss in my pocket and not bother me since its so thin and light. For $20 and the convenience of having its built in micro usb cable sounds like a perfect little invention to get me through the day.
Click to expand...
Click to collapse
Exactly why I went with it. Even while traveling I'm generally within range of a car or home charger, especially now that pretty much everyone without an iPhone has a micro USB charger somewhere.
I just wish it had a built in AC adapter as well but I'm sure the size would increase by quite a bit. Someone (iGo maybe) makes one like that but it only has about an 1100mah battery if I recall.

I found something here in the Netherlands, and I'm not quite sure if you guys in the US have the same thing..
The thing this has going for it is it's portability. It fits in your pocket, and if you don't mind a big lump in your pockets, it even fits together with your phone.
Click over there <<< to check out the dutch website of duracell. It basically is a battery with a socket plug on it, and 2 USB outlets.
Tech. info:
Output voltage: 5 volts DC
Input voltage: 5 volts DC, max. 1 amp
Capacity: 1800 mAh
Offcourse, this is the dutch version, with the dutch socket plug, but maybe there's an US version as well?

Thanks for all the info here guys. I have that crappy Black and Decker Pocket Power from a few years back, that well, isn't living up to the charge these days, so I need something else.
Still a bit too many options, but I'm sure I'll find one that works the best.

What is your power bank?

Hi All! So this is my first time starting a new thread so I hope I'm doing this right. I couldn't really find a thread specifically for battery banks or battery backups so I thought I'd start one.
I was wondering what is everyone's method of backing up/recharging your battery for your cellphones? For me, the battery that comes with my phone is enough to get me through the day usually and I just charge it every night while I sleep. If I go on trips, I use the Rav Power 10000 mah battery bank. I find this a bit bulky but it works great and lasts many charges before I have to recharge again.
Everyone's taste and preferences are different so I'm seeing what other options are out there that may be lighter in weight. I'm thinking of getting their smaller one, the 5200 mah, and have this in my backpack or car for just in case.
Any mini reviews of what you have would be great :good:

Wow, cool gadgets, I need to get a bank for just-in-case emergencies. Thanks Currently i use a solar powered charger, which is really slow and somethings doesn't work as desired. Looks similar to this http://www.amazon.com/External-Univ...=8-4&keywords=solar+powered+cellphone+charger

Ive bought one at sunsky from china battery about 4000mah, but it was year before, now there is a better.

I used to have a bank that looked like a GBA SP, with foldable screens. In the screens were two solar panels, which charged the battery of, I think, about 2000mAh or something like that. The thing is now broken though. Still looking for a nice (affordable) replacement

Mine is Anker 5600

I use the Belkin 4000, size similar to a ext HDD and look nice, pocketable too
http://www.techhypermart.com/belkin-f8m160ak-portable-battery-pack-4000.html

Charger considerations
Hi,
I need advise for the following:
Charger A (Li-polymer battery) output : 5V, 1A
Charger B (Li-polymer battery) output : 5V, 500mA
Device input: 5V, 750mAH (Li-ion / Li-polymer)
When using Charger A, some people comment that it will limit the current of 750mAH for the device and the device's battery should be fine since both the charger and device are at 5V. However, some people comment that this will shorten the battery life of the device since it will perform a 'quick charge' using 1A.
When using Charger B, some people comment that the device will draw more current than it can deliver and causes it to heat up and reduces the charger's life. However, some people comment that Charger B will extend the battery life of the device since it performs a 'slow charge'.
I also read that USB pins on the charger denotes if the charger is a PC or a dedicated charger. If it is a PC, the device will limit the drawing current. If it is a dedicated charger, the device will draw more current to charge itself.
I am confused as to who is right and which charger should i be using.
Can someone enlighten me ?
Thank you very much.

bought this one from Ebay, has not yet arrived, therefore I cannot tell if its good or not.
but for its price its quite a good bet, 12000mAh for 33 bucks (on sale until tomorrow)
not able to post links, just type w ww. before the following
ebay.com/itm/12000mAh-External-Power-Bank-Battery-Charger-iPhone-3-4S-iPad-3-2-Blackberry-/280947027345

Zagg sparq 2.0 highly recommended
Sent from my GT-N7100 using xda premium

I recommend Anker 5600 is very good for that stuff.

Hi, I use choiix power fort 10Wh http://www.coolermaster-usa.com/product.php?product_id=3001 it have 2700mAh and it's small and looks very nice. It can give one full charge for my SGSIII

I went on a trip this year and searched for a good bank, and this showed up.
http://www.sayes.co/20-powerbank.html
I tried it and it was really good, it has lots of adapters and it's cheap =P

I was able to order a RavPower 5600mAh on sale a while back ago, that was posted on slickdeals. here. I am pretty happy with the performance of the little backup, it defiantly gets the job done. My only complaint is that the body gets scratched up easily.

I was comparing the Ravpower and the Anker 5600 and they both look exactly the same except that both are branded with their logos. So I'm wondering if they're from the same manufacturer. Going to have to do some more research. However my current Ravpower power bank I do have is working great and I love this thing for trips.
I'm also thinking of getting a solar one for my 3day emergency/bug out bag. Thanks for all the suggestions.

Green Ranger said:
I was comparing the Ravpower and the Anker 5600 and they both look exactly the same except that both are branded with their logos. So I'm wondering if they're from the same manufacturer. Going to have to do some more research. However my current Ravpower power bank I do have is working great and I love this thing for trips.
I'm also thinking of getting a solar one for my 3day emergency/bug out bag. Thanks for all the suggestions.
Click to expand...
Click to collapse
Yeah, can someone please let me know if they are the exact same manufactuers, except for the company logos on them? I am deciding between the two. Also, what do you guys think of their 2600maH stick version? Which manufactuer would you go for over the other and why? I am very interested.

I'm using a "Scosche SolBAT II Solar Powered Backup Battery and Charger" which I bought off Amazon for something ridiculous like $15 last year.
I bought it for hiking mostly as an emergency charger. I use a Huawei phone as a GPS out in the wilderness, and the GPS app (Androzic) is quite power intensive. I have also used the same device on an iPhone and an iPod touch. The Huawei phone will receive a full charge from this battery, but the iDevices will only go to around 75%.
The solar cell on the back of the battery isn't all that efficient and will take about two days to charge the internal battery, but having it there gives you more options should an emergency occur while in the wilderness. A half hour charging in full sunlight would provide enough power for a short call or a couple of texts to family or emergency services.
The device comes with suction cups and a small carabiner, so it can be stuck to the inside of your car window or clipped to the back of your rucksack. The device is lighter and smaller than the average smartphone and can be fully charged by USB in about three hours. Interestingly, the device has a LOT of bad reviews on Amazon, so maybe they simply sent me a good one.
I also have a very cheap and nasty handcrank USB charger from dealextreme which can be used to add a bit of juice to the solar battery pack at night or in cloudy weather or can directly charge the phone in an emergency. It's a little flimsy and takes a fair bit of cranking to get enough juice for even one call, but it weighs nothing, cost about $2 and is cheap insurance out in the boonies.
My list of power equipment for the phone/GPS and the iPod Touch for a multi-day walk are as follows:
Short Micro USB cable x 1
iPod USB cable x 1
Scosche SolBAT II battery/charger with alloy carabiner
DX hand crank battery charger
Total weight is less than 200 grams

nottellingeither said:
I'm using a "Scosche SolBAT II Solar Powered Backup Battery and Charger" which I bought off Amazon for something ridiculous like $15 last year.
I bought it for hiking mostly as an emergency charger. I use a Huawei phone as a GPS out in the wilderness, and the GPS app (Androzic) is quite power intensive. I have also used the same device on an iPhone and an iPod touch. The Huawei phone will receive a full charge from this battery, but the iDevices will only go to around 75%.
The solar cell on the back of the battery isn't all that efficient and will take about two days to charge the internal battery, but having it there gives you more options should an emergency occur while in the wilderness. A half hour charging in full sunlight would provide enough power for a short call or a couple of texts to family or emergency services.
The device comes with suction cups and a small carabiner, so it can be stuck to the inside of your car window or clipped to the back of your rucksack. The device is lighter and smaller than the average smartphone and can be fully charged by USB in about three hours. Interestingly, the device has a LOT of bad reviews on Amazon, so maybe they simply sent me a good one.
I also have a very cheap and nasty handcrank USB charger from dealextreme which can be used to add a bit of juice to the solar battery pack at night or in cloudy weather or can directly charge the phone in an emergency. It's a little flimsy and takes a fair bit of cranking to get enough juice for even one call, but it weighs nothing, cost about $2 and is cheap insurance out in the boonies.
My list of power equipment for the phone/GPS and the iPod Touch for a multi-day walk are as follows:
Short Micro USB cable x 1
iPod USB cable x 1
Scosche SolBAT II battery/charger with alloy carabiner
DX hand crank battery charger
Total weight is less than 200 grams
Click to expand...
Click to collapse
That is a nice list of equipment. How is the solar powered charger coming along?

tgmeyer said:
Yeah, can someone please let me know if they are the exact same manufactuers, except for the company logos on them? I am deciding between the two. Also, what do you guys think of their 2600maH stick version? Which manufactuer would you go for over the other and why? I am very interested.
Click to expand...
Click to collapse
Honestly i went with pricing. I assume if they look the same they are from the same vendors/manufactures but different brand/company. Reviews for both sound very good too. Ravpower had a promo going on a while back and i tend to see them pop up from time to time on slick deals. The stick might give you one charge but since it looks smaller than the rest, it may be the easiest and lightest to carry around. I say get a decent sized one. Anywhere between 5600mah to 10000mah so you can go through a few charges without needing to charge again.

I have a 6600 mAh(well, in my experience it's not true, more like 4-4.5k), but I rarely use it after I bought a tablet with a fullsized usb port in it.

solar charger
I was looking for a solar charger. I bougth one but it crashed in two days. Therefore I returned it and now I am waiting for another one. In the place I live there are few options

[Q] Any recommendations on power bank?

Keeping your phone charged when you're out and about isn't always easy so it's no wonder portable chargers and power banks are such a popular investment.
I was not sure exactly of the prices before but I know they were not far off this, Super Sneeky!!! Any recommendations on power banks people???

I prefer mi power bank form xiaomi that was a good quality

Mr.Kopong said:
I prefer mi power bank form xiaomi that was a good quality
Click to expand...
Click to collapse
I know xiaomi power bank is good.But it is too hard to purchase origianl

If you are from US, Anker power banks have no competition and still #1 rated/selling product on amazon.

bluezheng said:
I know xiaomi power bank is good.But it is too hard to purchase origianl
Click to expand...
Click to collapse
I myself now using xiaomi power bank, well. I cannot recognize whether it is the original one though it is declared to be. If I have to get another power bank, this time I'd prefer a solar one. Solar charger is more convenient to use. Can be both charged with USB adapter and solar energy. Some are even water-resistant. You can consider that as well.:laugh:

Kingskiel said:
I myself now using xiaomi power bank, well. I cannot recognize whether it is the original one though it is declared to be. If I have to get another power bank, this time I'd prefer a solar one. Solar charger is more convenient to use. Can be both charged with USB adapter and solar energy. Some are even water-resistant. You can consider that as well.:laugh:
Click to expand...
Click to collapse
I would not recommend pure solar chargers. Even if you get it in a direct sunlight, due to a small surface area with solar cells you will not get higher charging power than 0.5A which is a joke comparing to most of the smartphones and tablets requiring 2A of charging. I even tried large solar panel folding chargers and was never able to get 1A of charging current out of them. Plus, you have to be in a direct sun light and open space without any shade.
If you have one of those regular external batteries with a solar charger on top of it, so you can charger it either from a sun or from AC wall adapter, it's better since you can store a charge into the internal battery. But again, it will take you MANY hours to fill it up because it chargers as painfully slow rate.
Just for the reference, if you are using your phone or even idle with apps running in the background, you can be easily discharging at higher rate than 0.5A that your solar charger will provide.
Bottom line, solar chargers are a nice to keep your calculator running For a modern smartphone or a tablet with 3000-5000mAh internal battery - it will not be useful.

vectron said:
I would not recommend pure solar chargers. Even if you get it in a direct sunlight, due to a small surface area with solar cells you will not get higher charging power than 0.5A which is a joke comparing to most of the smartphones and tablets requiring 2A of charging. I even tried large solar panel folding chargers and was never able to get 1A of charging current out of them. Plus, you have to be in a direct sun light and open space without any shade.
If you have one of those regular external batteries with a solar charger on top of it, so you can charger it either from a sun or from AC wall adapter, it's better since you can store a charge into the internal battery. But again, it will take you MANY hours to fill it up because it chargers as painfully slow rate.
Just for the reference, if you are using your phone or even idle with apps running in the background, you can be easily discharging at higher rate than 0.5A that your solar charger will provide.
Bottom line, solar chargers are a nice to keep your calculator running For a modern smartphone or a tablet with 3000-5000mAh internal battery - it will not be useful.
Click to expand...
Click to collapse
you are right. most solar power bank is just stunt.

bluezheng said:
Keeping your phone charged when you're out and about isn't always easy so it's no wonder portable chargers and power banks are such a popular investment.
I was not sure exactly of the prices before but I know they were not far off this, Super Sneeky!!! Any recommendations on power banks people???
Click to expand...
Click to collapse
if you are from India, get Mi power bank from Flipkart.
they are the official partners here.
costs you Rs.999/- for 10400mAh model

[TECH DISCUSSION] Is it possible to have a Dash Charge power bank?

So I'm in my junior year of electrical engineering and seeing the incredible things done with smartphones is something I really would like to be a part of one day. I wanted to discuss, considering the limits of current technology, if it would be possible to create a safe Dash Charging power bank for this device? For those who don't know how dash charging works I'll post a few links and my understanding of how it works and if I'm wrong at any point feel free to correct me.
Dash Charging - The Technology
The way dash charging works, as I understand it, is that the USB-C cable wires are made wider in diameter to accommodate a larger amount of current being passed through to the battery. The charger plugged into the wall takes on the burden of the extra voltage pushing the current through the wire and keeping it away from the phone's internal battery (which is brilliant). That means that the charger takes on the extra heat which isn't a problem because passive components are often more tolerant of heat than batteries are.
Links:
http://www.phonearena.com/news/How-it-works-Dash-Charge-fast-charging-on-the-OnePlus-3_id82646
http://www.trustedreviews.com/opinions/what-is-dash-charge-oneplus-3
The Issues
A dash power bank could be charged up exactly like the phone; with the dash charger it could fill extremely fast. However, using the battery pack to charge the phone means that the internal Li-Ion batteries of that charger will be taking on the extra heat from within the case which could:
a) shorten the power bank's life span
b) Possibly lead to unsafe power banks if it got too hot
I also see there being limitations with the power bank's ability to maintain a full speed charge similar to wall charging along with what types of batteries would be needed to provide the power output similar to the dash charger.
The Solutions
So in my limited knowledge I think that the biggest enemy here is heat generated in the power bank. I feel like the rest could be overcome with a fairly large bank of 18650 batteries. It is possible to have a passive cooling system built into the power bank for heat dissipation but that might make the battery bank difficult for users to hold on their Pokemon Go outings. Also, reducing Dash Charging specifications just a little, decreasing the speed at which it could charge the device, would alleviate some of the concern. So while you might not get 60% in 30 minutes from the wall, perhaps aiming for 45-50% charge in that amount of time would increase the power bank lifespan and total amount of charges.
What do you all think? I'll readily admit I don't understand completely how current battery bank internals work to limit over-current and over-voltage scenarios as I've never taken one apart. If anyone wants to educate me and say whether they think Dash Charging is possible I'd love to hear about it. This is the kind of stuff I imagine the OnePlus engineers are sitting around working on every week.

i think that would be too expensive to make for consumers, u figure if a dash charge block is almost $30.00 this thing would be well over $500.00 which would be too much for a regular consumer to purchase just to have a portable charger, maybe in about the 3rd or 4th generation of this technology we could see one in about 5 years, they would rather make a ton of 30.00 purchases and have you buy their charge block opposed to very little purchases of about 500.00 for power bank

It's actually already there in the market,
named "OPPO VOOC Powerbank"
attached is mine, working fine with OP3 Dash,
Price is around $45-50 - 6000mAH
Charging rate is 3,5A
and it DOES charge my device up to 60-70% in 30 Minutes
it heat up though, especially near the plug (USB C end)
this is why i use the metal based USB C adapter, so it release the heat faster

otonieru said:
It's actually already there in the market,
named "OPPO VOOC Powerbank"
attached is mine, working fine with OP3 Dash,
Price is around $45-50 - 6000mAH
Charging rate is 3,5A
and it DOES charge my device up to 60-70% in 30 Minutes
it heat up though, especially near the plug (USB C end)
this is why i use the metal based USB C adapter, so it release the heat faster
Click to expand...
Click to collapse
I had no idea that even existed. I'm going to look into the specs of that device and see what it has under the hood. Thanks for letting me know about it!

AlkaliV2 said:
I had no idea that even existed. I'm going to look into the specs of that device and see what it has under the hood. Thanks for letting me know about it!
Click to expand...
Click to collapse
Here,
the information page from the maker itself :
http://www.oppo.com/en/accessory-vooc-power-bank
and where to get it :
https://www.amazon.co.uk/OPPO-VOOC-Flash-Charge-Power-White/dp/B00SINEEXA

I'm going to build power bank using Dash Charge car charger. The power banks higher voltage (12V if using car charger) means less current for individual cell while charging. I have bought battery holder case 10 x 1,5V for AA batteries. http://r.ebay.com/vpShFJ (I already have plenty of Eneloop AA batteries for other accessories.) Each Eneloop has at least 1,5Ah (1500mAh) capacity while retaining voltage at or over 1,2V. http://lygte-info.dk/review/batteries2012/CommonAAcomparator.php I'm going to attach 12V socket to the battery holder case so I can use my car charger both in car as well while at camping.
Battery bank consisting of 10 x AA Eneloop has a total capacity of: 12V*1,5Ah=18Wh.
Dash chargers input is rated at 12V/2.5A so each individual Eneloop would have about 250mAh discharge rate.
My old Galaxy Note 3 had 3,8V 3200mAh battery and the capasity was ~12,2Wh. I don't know the nominal voltage of OP's battery but I would estimate it's about the same as Samsung's so the capacity should be lower than in Note 3. Maybe around: 3,8V*3000mAh=11,4Wh.
10x Eneloop batteries has a capacity to give energy for charging OP3 from 0% TO 100% at least. (18Wh/11,4Wh = ~1,6)

I think in India it's not available
Sent From My One Plus 3

https://forums.oneplus.net/threads/new-product-survey-dash-charge-power-bank.457920/

Squabl said:
I'm going to build power bank using Dash Charge car charger. The power banks higher voltage (12V if using car charger) means less current for individual cell while charging. I have bought battery holder case 10 x 1,5V for AA batteries. http://r.ebay.com/vpShFJ (I already have plenty of Eneloop AA batteries for other accessories.) Each Eneloop has at least 1,5Ah (1500mAh) capacity while retaining voltage at or over 1,2V. http://lygte-info.dk/review/batteries2012/CommonAAcomparator.php I'm going to attach 12V socket to the battery holder case so I can use my car charger both in car as well while at camping.
Battery bank consisting of 10 x AA Eneloop has a total capacity of: 12V*1,5Ah=18Wh.
Dash chargers input is rated at 12V/2.5A so each individual Eneloop would have about 250mAh discharge rate.
My old Galaxy Note 3 had 3,8V 3200mAh battery and the capasity was ~12,2Wh. I don't know the nominal voltage of OP's battery but I would estimate it's about the same as Samsung's so the capacity should be lower than in Note 3. Maybe around: 3,8V*3000mAh=11,4Wh.
10x Eneloop batteries has a capacity to give energy for charging OP3 from 0% TO 100% at least. (18Wh/11,4Wh = ~1,6)
Click to expand...
Click to collapse
We're going to need a hardware XDA for people like you. I never would have thought to string together Eneloops to make an external charger since most of your power banks contain 18650 with overcharge protection and stuff built in. The wall dash charger is spec'ed to run 5V at 4A and the car charger loses half an amp to land in at 3.5A max. Car charger voltage varies between 3.4~5V from what I can tell probably based on the car's cigarette lighter specs.
What kind of case are you using with the eneloops and what are you using for overcurrent/voltage protection?

otonieru said:
It's actually already there in the market,
named "OPPO VOOC Powerbank"
attached is mine, working fine with OP3 Dash,
Price is around $45-50 - 6000mAH
Charging rate is 3,5A
and it DOES charge my device up to 60-70% in 30 Minutes
it heat up though, especially near the plug (USB C end)
this is why i use the metal based USB C adapter, so it release the heat faster
Click to expand...
Click to collapse
So... can you tell me if a normal VOOC charger block charge the OP3 as fast as the original dash charger in package?
I saw it is the same current rate, but the technology, is it interchangeable?

Just wait oneplus is planning to release a dash charge powerbank with 10000mAh so stay connected no need to buy oppo 6kmAh one

AlkaliV2 said:
The wall dash charger is spec'ed to run 5V at 4A and the car charger loses half an amp to land in at 3.5A max. Car charger voltage varies between 3.4~5V from what I can tell probably based on the car's cigarette lighter specs.
Click to expand...
Click to collapse
You are right, the car charger uses lower current and is probably a bit slower. When I receive my car charger I will do some testing and will report back.
The voltage variation is needed on all chargers. When the battery is almost full the charging voltage drops.
AlkaliV2 said:
What kind of case are you using with the eneloops and what are you using for overcurrent/voltage protection?
Click to expand...
Click to collapse
I have ordered a case like this: http://r.ebay.com/vpShFJ
The car charger has been designed to be used as it is. The charger itself does not require additional overcurrent protection but in case of a short circuit a 5A fuse is needed to protect the wiring and Eneloops. Overvoltage is not a problem as the maximum voltage with Eneloops is going to be under 15V.

DouglasDuZZ said:
So... can you tell me if a normal VOOC charger block charge the OP3 as fast as the original dash charger in package?
I saw it is the same current rate, but the technology, is it interchangeable?
Click to expand...
Click to collapse
Yes it is. I've posted it in another thread as eell. Just check through my post history.
This is pure logical, since Oneplus is just a subsidiary company of OPPO, so they surely can share few technologies between each other, and VOOC/DASH is one of it,
Just make sure your usb c adapter quality is good when you decide to use it with VOOC charger.