Develop Bugs

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.
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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.

[Q] Charging time variation by cable

I made an interesting discovery lately relating to the whole charing time thing and I was wondering if anyone else had encountered this.
When I first got my SGN2 I also immediately picked up a couple of extra MicroUSB cables from **** Smith. One was for the car and the other was to replace the rather short one provided / for PC data transfer.
I have found that the charging time using my wall charger + the **** Smith cable is absolutely horrid. I am talking 4+ hours for a full charge. Today I figured I would try the original cable provided by Samsung and I am back to getting very close to 1% per minute give or take.
This left me with the question. Was this change related to the physical properties of the cable or the LENGTH of the cable? It is a 2m cable opposed to the 1m one provided by Sammy. Is there different STANDARDS of microUSB cables? Anyone have any input on this?
On top of that...Would I benefit at all from charging the device slower? Would the battery last longer if I did? I have noticed a fair few discussions out there on this topic but none of them really provided a solid response so I figured I would ask again and see if there is any battery experts about
Cheers,
Sheik

Your absolutely correct about the charge time. It can very depending on the size of the wire,or more so the resistance of the wire. Its not so much the voltage that you plug into, its the current that is controlling the speed of the charge. The amount of current is determined by the charger current output measured in amps,and the wire resistance measured in ohms...its like trying to pour 5 gallons of water into a bucket thru a 1 inch tube verses pouring that same amount of water into a 3 inch tube. obviously the 3 inch tube would fill up the bucket at a faster rate. In that respect the 1 inch tube has more resistance than the 3 inch tube. The bigger the wire the faster the flow the smaller the wire the more resistance the slower the flow.. this is ohms law...hope it helps...
Sent from my SGH-T889 using XDA Premium HD app

In addition to that, check the amp rating of the charger.
Most of the chargers in the market has 1amp output, while original Note 2 charger provides 2amp output, which obviously charges faster.

thanks for the info
but from where i can find cable same like the original one

Thanks for that Kush. Makes sense enough. But its a bit strange that there is no ratings on the cables we buy when theres this kind of variation in the performance. I guess it hasnt been an issue up until now with devices rarely utilizing 2amps but with the majority of smartphones and tablets pulling that and more now, along with the increasing size of batteries, we will probably start to see different ratings on our microUSB cables... Or one can hope at least...
EDIT: @ rasel800 - Sorry I was a little vague in my original post with that one Rasel. I am indeed using the out of the box 2amp Samsung wall charger that came with the phone. I just changed the cable because I wanted a little extra length.

xfive_no5 said:
thanks for the info
but from where i can find cable same like the original one
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I wouldn't mind knowing myself! Its not something thats actively advertised so I think would be a little hard finding the right ones. I think its just one of those cases where if you want to be sure you spend some exorbitant amount and get one from your manufacturer... -_-

I had the same issue, bought some cheap cables from eBay and they don't even provide enough power to charge at all with the standard charger. There is a large variation in cable quality.
Sent from my GT-N7100 using xda app-developers app

KUSHLEGEND said:
Your absolutely correct about the charge time. It can very depending on the size of the wire,or more so the resistance of the wire. Its not so much the voltage that you plug into, its the current that is controlling the speed of the charge. The amount of current is determined by the charger current output measured in amps,and the wire resistance measured in ohms...its like trying to pour 5 gallons of water into a bucket thru a 1 inch tube verses pouring that same amount of water into a 3 inch tube. obviously the 3 inch tube would fill up the bucket at a faster rate. In that respect the 1 inch tube has more resistance than the 3 inch tube. The bigger the wire the faster the flow the smaller the wire the more resistance the slower the flow.. this is ohms law...hope it helps...
Sent from my SGH-T889 using XDA Premium HD app
Click to expand...
Click to collapse
Actually it's I=U/R, so the current depends on the voltage. If U=5V and I=2A, then R=U/I=2.5Ohm. That'd be quite a bit for a 2m cabel http://www.cirris.com/testing/resistance/wire.html?
I'd rather guess the problem is with the pin layout of the cable.

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10000Mah QI Wireless charger

Hey guys any thoughts on any 10000mah qi pad ?
I'm looking for some that does not need any special positioning to charge, (if possible) with magnets to hold my n5 while i'm driving .. Do you guys know any ??
Thank you !!!

Just got one of these:
ht tp://dx.com /p/ mocreo-qi-enabled-wireless-charger-charging-pad-w-10000mah-power-bank-battery-packs-for-qi-devices-250618
(Can't post links yet. Remove spaces above.)
It works for both my Nexus 5 and 7. Charges rather slowly in my opinion, but then this is my first experience with Qi charging, so I can't really make a useful comparison with other Qi chargers.
It's big (around 153mm x 73mm x 14mm) and does not have magnets to hold the phone. So I doubt you'll be able to use it as a car dock or something...

Cubic,
Any thoughts on whether the claimed capacity is legitimate? Or an exaggerated 6000 mAh?
Sent from my Nexus 5 using XDA Premium 4 mobile app

benjdm said:
Cubic,
Any thoughts on whether the claimed capacity is legitimate? Or an exaggerated 6000 mAh?
Sent from my Nexus 5 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
No idea. I wouldn't trust the specs too much though.
Probably would not do a detailed test. Even if it does have that 10000mAh capacity stated, there are still many aspects (charging efficiency, quality of the battery, etc) apart from the capacity that I think would affect how many charges you'll get from it anyway.
I didn't buy this expecting a top quality product (it is a Chinese OEM product after all), and so as long as it does Qi charging as stated and can give me two to three full charges on my Nexus 5, I'll be happy.
That said, the build quality on this is pretty decent. Apart from a flimsy power button, the materials and build quality actually reminds me of a Samsung Galaxy S3.

CubicU07 said:
No idea. I wouldn't trust the specs too much though.
Probably would not do a detailed test. Even if it does have that 10000mAh capacity stated, there are still many aspects (charging efficiency, quality of the battery, etc) apart from the capacity that I think would affect how many charges you'll get from it anyway.
I didn't buy this expecting a top quality product (it is a Chinese OEM product after all), and so as long as it does Qi charging as stated and can give me two to three full charges on my Nexus 5, I'll be happy.
That said, the build quality on this is pretty decent. Apart from a flimsy power button, the materials and build quality actually reminds me of a Samsung Galaxy S3.
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Charging efficiency on all these wireless chargers is 70% to 80% efficiency. The Morceo is actually made by another company, who also supplies it to Choe. They are IDENTICAL. I also wouldn't say the power button is flimsy. It rattles a little bit because of the method of construction, but the button itself is pretty solid. They device has a piano key finish & the black is a huge fingerprint magnet. The black also has, what I would call tacky, a polished gold bezel, it is not flat like many pictures make it appear.
I have had this & the Lugu Lake 6,000mah device. They are likely made by the same company from what I can tell by looking at them. The 10,000mah definitely lasts longer for me & the multi-amperage USB outs are a nice addition. It will essentially charge you N5 twice, or an N7 once & 30% to 60% of the N5 once. It will give you close to 10,000mah via usb, but again, the efficiency loss via any wireless will knock you down to between 6,000mah & 8,000mah. The Lugu Lake 6,000mah will essentially charge my N5 ONCE before it is at the lowest charge level, so this appears consistent with all wireless chargers.

For curiosity sakes, when would something like this be used? You can use it in your pocket and if I am stationary at someones place or car I can just plug my phone in. I can't really think of any situation where this would come in handy.

I use a battery pack on long trips when I don't know for sure I will have an outlet available. Traveling to NYC, for example. The qi feature would just be gravy.
Sent from my Nexus 5 using XDA Premium 4 mobile app

http://www.amazon.com/gp/product/B00FRDNLD8/ref=oh_details_o02_s00_i00?ie=UTF8&psc=1
Sent from my Nexus 5 using Tapatalk

I wanted to get something like this, and place it in my pocket for charging, you think that would be a bad idea? overheating? and these batteries from China?

Has anyone bought this yet? http://www.amazon.com/gp/product/B00FRDNLD8/ref=oh_details_o02_s00_i00?ie=UTF8&psc=1
If so how does it work? How long does it take it to charge the phone wirelessly vs usb cable?

sick of chargers all over house?

i have 4 devices so this unit was perfect for my needs or anybody sick of having usb cables all over the house. shipping was on time and unit was secure and safe and inside the box is a INATECK 4 Port Wall Charger and user manual and the manual was simple to read and unit easy to use regardless but nice to have incase its needed. the unit is sturdy, with a good weight to it which i liked as i just plugged unit in wall and now im ready to charge all my devices at once. unit also has a blue LED thats bright but i like that fact because i charge mostly at night and its easy to see without turning on the light. i tested the unit with a Iphone 5/GS4/GS5 and a ipad and no issues there using your devices usb. 2x 5V/2.4A (Super Charger) Interfaces: Supports 5V USB charged devices on sale (Most types of mobile phones,tablet PCs or digital devices);2x 5V/1A (Universal) Interfaces: Supports smart phones from iPhone, Samsung & other 1A USB devices are the spcs for the unit and those pretty much cover anybody looking to make charging your devices easy.
and for under $15 its a must for families or person with multiple devices. i have used other usb wall chargers but a key selling point to this unit is the built in surge protector which is also CE&FCC certified and in my opinion with the costs of our devices that is a great feature and also unit is premium high power enabled to allow full speed charging. really liked the product overall and the price is lowest i have seen plus all its features make it a must.
http://www.amazon.com/Inateck-All-I...words=inateck+4+port+compact+usb+wall+charger
https://www.youtube.com/watch?v=VVKnlZKBHcw

I'm using the same one in my room, it's really helpful. I wish homes came with this built-in already lol.

Just purchased this is awesome. Thanks for sharing

Just came back from a week long family vacation, 3 tablets and 2 phones - don't know what I would have done without this 40W/5port charger: http://forum.xda-developers.com/showthread.php?t=2608578

Magnetic Type C Cable

Hi guys
I m searching for a Magnetic type c Cable that can support the quick charge 3.0. The EU version of the LG G6 not have the wireless charge so I would have a magnetic Cable to use a bamboo stand that I have bought.
I have see this cable:
https://m.banggood.com/Baseus-Magne...179304&utm_content=989&p=K41513885236201411XJ
I had see this cable from an Italian YouTuber that have test it with a special gadget.
He explains that this cable can support up to 4Ampere.
Someone can suggest me pls? If you use some cable tell me what do you use and if it s possible post the link
This is the YouTube video, it is in Italian but you can understand the functionality watching the video too.

Just one reminder, rumor has it that quick charge degrades battery life. So it would be better to buy a normal magnetic cable like this maybe and then buy a "fast" one, to use only when it's really needed. Just saying.
The one I linked you is definitely slow, using the quick charger that came with my G6 needs 1 hour to charge it from 60%.

Melissakis said:
Just one reminder, rumor has it that quick charge degrades battery life. So it would be better to buy a normal magnetic cable like this maybe and then buy a "fast" one, to use only when it's really needed. Just saying.
The one I linked you is definitely slow, using the quick charger that came with my G6 needs 1 hour to charge it from 60%.
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Click to collapse
the Quick charge is given by the transformer, that of the LG G6 should be 3.0. (although some say it is 2.0).the cable is only what transmits energy in the form of an electric current.having a cable that supports a high current causes your device to be protected moreover. A type c cable also carries a signal that tries to communicate to the transformer the quantity of voltage necessary for charging. if this does not work there is a risk that the device will explode. So first rule to have a reliable cable and that supports a high amperage.
About the quick charge instead, you have read old information about quick charge 1.0 on a device that not support it. Infact now smartphone that support quick charge have a chip that is made by qualcomm to support this technology. You can't use a quick charge charger to charge (sorry xD) a smartphone that not support it. If you do, you could damage your device.
Nowadays quick charge 3.0 is the best charging method that we have for devices that supports it. but the rule remains the same: a good cable for a good charger
PS: I'm studying electronic engineering
PS: sorry for my bad English! If you have questions ask me pls. I will try to repeat it

All these are correct,I do not use the official charger anyway, but there is still a debate however quick charge degrades battery life or not.

I recently found a USB C 18W-supported magnetic cable that is Qualcomm Quick Charge 3.0 compatible and at the same time is capable of fast data transmission. The brand is TOPK (you can check at thei website topk dot com). I own quite a few other accessories from them and I can say that they are reliable. Cables are nylon braided and plug heads are 3d aluminum so they are generally stretch and rust resistant.
The other one I saw was Lexuma XMAG.
They are the first of their class. (I am no way related to these brands, just my personal experience)

Lexuma XMAG. looks like a better quality

nash211 said:
Lexuma XMAG. looks like a better quality
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Yeah cause it's more expensive. Lol. I happen to have TOPK cables cause they currently have flagship stores in my location. They may be cheaper but the cables look premium. I use them oftentimes while playing ML with my Poco F1 so they are always prone to stretch sometimes greater than 90 degrees. Looks like nylon braiding does its job well.

Maybe, I will have a look at the TOPK, maybe yes the price makes it appear better.

The design thou is circular and not oblongated like type C plug. Im not sure if I liked it more but the good thing is it's not just reversible but also rotatable; in perfect fit whatever orientation...