Develop Bugs

Travel charger

I had a question about a charger - I'm interested in getting a second charger for the Vibrant. I see that the charger that comes with the Vibrant says it has an output of 5.0V and 0.7A.
If I have an old LG charger that has an output of 5.1V and 0.7A, would that work. Could it damage the battery in my Vibrant, in anyway.
Thanks.

Not sure about your old charger, but it should work. Try it out at your own risk though.
I did want to comment on the chargers for the Vibrant. The phone seems to want a lot of current to charge properly. I was using an older 5V 500mA charger that served me well with my G1 and older BB Pearl. I had the Vibrant on it and it wouldn't charge fully. I also noticed the same thing when I would hook-up the vibrant to my notebook (typically 500mA max per port).
The good news is that there are a lot of cheap 5V 1A chargers on eBay. Just make sure to check a charger's spec before buying one.
$1.75 wall charger - http://cgi.ebay.com/US-AC-Power-USB...er_MP3_Player_Accessories&hash=item4aa03f4b9a
I also bought 5V 1A car chargers and mini USB to micro USB adapters so that I can use my old USB to mini USB cables when I am on the go.
$2.40 car charger - http://cgi.ebay.com/1000mA-1A-USB-C...er_MP3_Player_Accessories&hash=item4399e189d1
Charge only $1 - http://shop.ebay.com/i.html?LH_BIN=...r&_dmpt=PDA_Accessories&_trksid=p3286.c0.m301
Charge + Data $2 - http://shop.ebay.com/i.html?_nkw=mi...adapter&_osacat=0&_trksid=p3286.c0.m270.l1313

I have used my iphone charger a couple times. Very small letters on the back but I think it says it is 1.0A. Worked fine bit I went back to my vibrant charger. I also found a car charger at a circle K for $9.99. Probably could of got one a little cheaper on ebay but it was there and i needed a charge...lol
Sent from my Samsung Vibrant using XDA App

Vegastouch said:
I have used my iphone charger a couple times. Very small letters on the back but I think it says it is 1.0A. Worked fine bit I went back to my vibrant charger. I also found a car charger at a circle K for $9.99. Probably could of got one a little cheaper on ebay but it was there and i needed a charge...lol
Sent from my Samsung Vibrant using XDA App
Click to expand...
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Tried my old charger .. it works but is really slow compared to the one that came with the Vibrant. Probably going to end up purchasing an extra one for when I travel.

Personally I don't mind something charging slower when I travel as long as I'm getting more power to the phone than I'm using of course.

Monoprice has 1000mA
Anyone has experience with this wall charger from monoprice? (can't link, please look up Product ID: 6767)
It's rated at 1000mA. The stock charger that came with the vibrant is 700(I think). Will extra 300mA damage my phone?

sonnyg95 said:
Anyone has experience with this wall charger from monoprice? (can't link, please look up Product ID: 6767)
It's rated at 1000mA. The stock charger that came with the vibrant is 700(I think). Will extra 300mA damage my phone?
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Click to collapse
The extra 300mA will not damage the phone. Most smart phones require 700mA-1A to charge properly. But be careful, cheapo charger has potential to fry your phone. Anytime I buy a charger from ebay or cheap vendor, I plug it in to my old MP3 player for a week before I use it with my newer devices.
I have the same one that you see on monoprice. I've been using it for almost 2 years with no problem at all, YMMV tho.
I'd recommend this one. Looks identical to the charger that comes with my 3GS. Works well, I use it every day at work for more than 6 months now. Again, YMMV.
http://www.dealextreme.com/details.dx/sku.26446#open full view

sonnyg95 said:
Anyone has experience with this wall charger from monoprice? (can't link, please look up Product ID: 6767)
It's rated at 1000mA. The stock charger that came with the vibrant is 700(I think). Will extra 300mA damage my phone?
Click to expand...
Click to collapse
the max charge rate for a Li-ion battery is 1C. So you could charge at up to 1500mA.
I ordered that exact charger a few days ago.

sonnyg95 said:
Anyone has experience with this wall charger from monoprice? (can't link, please look up Product ID: 6767)
It's rated at 1000mA. The stock charger that came with the vibrant is 700(I think). Will extra 300mA damage my phone?
Click to expand...
Click to collapse
The amperage rating only tells you the *maximum* possible output. The device (your phone) controls the current draw. As long as the voltage matches (5v), you can use a charger with any amperage rating which is 700mA (0.7A) or higher.
(Note that this only applies to chargers that your phone plugs into. You have to be more careful with the self-contained spare-battery chargers (where you remove the battery from the phone and put it into the charger). But those are normally battery-specific anyway.)
Also, you *might* risk damaging the battery through long-term usage of a charger that can't supply at least the minimum amperage (such as the sfsilicon's 500mA transformer). The end of a charge cycle draws the most power which is probably why sfsilicon couldn't fully charge his battery.

MV10 said:
.......
. The end of a charge cycle draws the most power which is probably why sfsilicon couldn't fully charge his battery.
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that might explain why my laptop wouldn't always charge to 100% - first few times it did, and i'd find the notification msg when i'd close the laptop, but last few times it didn't
learn something every day
as i use the vibrant tethered every nite while browsing (which is when it was charging), any problem with finishing the charge with the samsung wall charger? ie interrupting the charge when i take it off the laptop?

High current car charger

Anybody come across a car charger that is high current like the HTC wall charger?

Most car chargers are classified as "rapid".

Anything designed to charge an iPad (2.1A versus the typical 1A) will give you plenty of juice. I use the Scosche reVIVE II with Pandora, Bluetooth, and GPS Navigation all on and still have enough power to positively charge my battery.
Fair warning, though, this will cause the phone to get real hot (I've had the overheating warning lights flash twice so far), so make sure you have plenty of ventilation around the phone, keep it out of the sun, etc etc.

Any charger that is at least 1 amp. will do. The phone 'pulls' a max of around 0.85 amps. No need for more then 1 amp.
If it has a replaceable cable, it must be the heaviest gauge, shortest cable, that you can use. I have seen long cheap thin cables that drop over a volt, and the Thunderbolt charges really slowly.
The charger or cable have to state that they for rapid charging. To rapid charge, you need to have the USB D- and D+ lines shorted. If that are not shorted, the Thunderbolt limits the charge current to around 0.35 amps. thinking it is connected to a PC. If they are shorted, letting the Thunderbolt know it can be rapid charged, you get up there around 0.85. You can easily modify the charger for high rate if it is good for at least an amp.
And in the end is heat. Heat and lots of it. It will damage the battery. So put it out of the sun and in cool air like near a vent.

Motorola Rapid Charger on Amazon is the best. I bought two.
http://www.amazon.com/Motorola-Vehi...Q9CA/ref=sr_1_1?ie=UTF8&qid=1309959388&sr=8-1
Review off Amazon
Genuine Motorola charger in retail packaging. 4.75-5.25V 950mA output, works w/ most micro-USB phones like Incredible, etc., June 11, 2010
By
David Pearlman "sound fanatic" (Arlington, MA) - See all my reviews
(TOP 500 REVIEWER) (VINE VOICE) (REAL NAME)
Amazon Verified Purchase(What's this?)
There are so many sketchy sellers selling phone chargers out there, that it can be a bit scary. The problem is that if the charger is poorly made, the output of the charger can be out of spec and can, in some cases, fry the phone you connect to it.
For that reason, when it comes to phone chargers, you should stick to name brands. (They are all made in China, but the name brand ones are usually subject to stricter QA).
When I found this charger on Amazon, SOLD BY AMAZON, I jumped on it. It's a MICRO USB car charger, made for Motorola and sold under the Motorola name, in retail packaging. The rated output is 4.75-5.25V and 950mA.
This charger should work fine with most any phone that uses the MICRO USB connector. The key number to pay attention to is the second one, the rated amperage. This is the MAXIMUM amount of current that the phone can request from the charger. A typical USB port on a PC provides as little as 100mA, and few provide more than 500mA. So this charger should charge your phone faster than when it's connected to a PC. A few phones out now can use up to 1000mA. But that just means they CAN use that amount. If 950mA is provided, they'll still charge, just a bit more slowly.
Note that the amperage (second number) merely tells you how much the charger CAN supply, if requested. The phone itself is responsible for asking for the current. That is to say, if this charger can provide 950mA, but your phone can only use 300mA--no problem. Your phone asks for 300mA and the charger provides all of what is requested. If, on the other hand, your phone can use 1000mA, this charger will provide all it can, which is 950mA--a wee bit less than the max asked for. That's also not a problem; it just means your phone will charge a little bit (not much in this case) more slowly. The rated voltage for this charger is presented in a range of 4.75-5.25V. The "ideal" voltage for a USB charger of any type if 5V. And most chargers for home use are rated right at 5V. But car chargers work in a noisier environment and thus you have the range. This is where a cheapo charger can really do damage, as some of them are poorly regulated and can provide voltages that are WAY out of spec. Again, when you can get a name brand charger from a seller you can trust (Amazon) for such a reasonable price, it's very foolish to consider the cheapo no-names.
This is an excellent quality name brand travel micro USB charger at a price that beats the no-name junk from third party sellers. What's not to like?
BE SURE TO ORDER IT FROM AMAZON AND NOT ONE OF THE THIRD PARTY SELLERS, as some of those have been known to make mistakes with respect to what they ship relative to the listing. I can confirm that Amazon is shipping the P513 /89143N charger, as pictured.
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Click to collapse

ddgarcia05 said:
Motorola Rapid Charger on Amazon is the best. I bought two.
http://www.amazon.com/Motorola-Vehi...Q9CA/ref=sr_1_1?ie=UTF8&qid=1309959388&sr=8-1
Review off Amazon
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Click to collapse
I've been contemplating buying this one, but I'd like to ask you if it charges your battery with navigation+music going? I have a usb charger in my truck, and with both of those going it just manages to keep my battery level where its at, sometimes losing a % or two.

kr0n1c said:
I've been contemplating buying this one, but I'd like to ask you if it charges your battery with navigation+music going? I have a usb charger in my truck, and with both of those going it just manages to keep my battery level where its at, sometimes losing a % or two.
Click to expand...
Click to collapse
From what I've read in the past here on XDA and on the reviews for the charger (on amazon) you shouldn't have a problem. The second review for the charger on amazon states that the reviewer was looking for a charger which actually charged his phone will using GPS and that he found it. It's a very well built charger and cheap. It's made my Motorola and sold by Amazon so buy with confidence.

kr0n1c said:
I've been contemplating buying this one, but I'd like to ask you if it charges your battery with navigation+music going? I have a usb charger in my truck, and with both of those going it just manages to keep my battery level where its at, sometimes losing a % or two.
Click to expand...
Click to collapse
It does indeed charge. I've had it since my original Droid and was concerned when I updated to the TB but it will charge the TB no matter what you're doing (I've had Nav running while on a phone call with BT and searching the internet and it still showed it was charging). Just be prepared for your phone to get HOT!! Great charger.

worwig said:
Any charger that is at least 1 amp. will do. The phone 'pulls' a max of around 0.85 amps. No need for more then 1 amp.
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Click to collapse
Actually, the phone will pull more than 850 mA. You're probably basing that on using a battery monitor, which only shows the flow of current into/out of the battery. I've seen 800 mA into the battery at the same time I have display, GPS and a phone call going, which is definitely more than an additional 50 mA. It wouldn't surprise me if the phone can take advantage of something more than 1A, since I see a battery drain of more than 200 mA with all of that going when not on the charger.

kr0n1c said:
I've been contemplating buying this one, but I'd like to ask you if it charges your battery with navigation+music going? I have a usb charger in my truck, and with both of those going it just manages to keep my battery level where its at, sometimes losing a % or two.
Click to expand...
Click to collapse
I have that Motorola charger and am a heavy GPS user. It charges the battery as if it were plugged into the wall. You'll be very satisfied.

mike.s said:
Actually, the phone will pull more than 850 mA. You're probably basing that on using a battery monitor, which only shows the flow of current into/out of the battery. I've seen 800 mA into the battery at the same time I have display, GPS and a phone call going, which is definitely more than an additional 50 mA. It wouldn't surprise me if the phone can take advantage of something more than 1A, since I see a battery drain of more than 200 mA with all of that going when not on the charger.
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Click to collapse
No, that was measured at the 5 volt power supply, based upon a lab power supply. I did a lot of experimenting when I developed the charger and phone mount for my motorcycle. And to get the 850ma from the power supply, I used a very short, maybe 8 inch, USB cable, and a charge voltage close to 5.3 volts. With 5 volts at the power supply, it would only pull about 650ma from the power supply. That was due to the voltage drop in the USB cable. With the 5.3 volts at the power supply, I was getting close to an actual 5 volts at the Thunderbolt. I never measured the current at the battery, but I could see it being a bit more then the 850ma in, if there were a switch mode supply in there.
Though I like the Battery Monitor widget as a rough guide, I never tested to see if the battery current and the battery monitor are accurate.

Does anyone know if the included HTC ac adapter and cable will charge faster than using your pc with the included USB cable?

happimeal said:
Does anyone know if the included HTC ac adapter and cable will charge faster than using your pc with the included USB cable?
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Absolutely.
A PC USB port is limited to under 500ma. The Thunderbolt appears to to limit PC USB draw to about 350ma. I haven't measured the actual current in the HTC charger, but it is a high current charger, and charges my Thunderbolt very quickly. Battery Monitor widget shows high battery charge rates. I suspect it is getting near the max rate up near 1 amp.

worwig said:
Absolutely.
A PC USB port is limited to under 500ma. The Thunderbolt appears to to limit PC USB draw to about 350ma. I haven't measured the actual current in the HTC charger, but it is a high current charger, and charges my Thunderbolt very quickly. Battery Monitor widget shows high battery charge rates. I suspect it is getting near the max rate up near 1 amp.
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Click to collapse
HTC charger states 5V/1A on the charger itself.

You can use the Palm car charger for $3.75+tax, free shipping. it is 5V/1A, same rating as the HTC wall charger.
Go here for 25% off
http://www.wireless.att.com/cell-ph...otion/accessories.jsp?source=EC0A0011600jtl10
Add product here, must add to cart to see 25% discount.
http://www.wireless.att.com/cell-ph...027&q_sku=sku4720234&q_manufacturer=&q_model=
Also, if so inclined, you can lop the top off of the charger so that you can use any usb cable (ipod, iphone, anything)

dpham00 said:
HTC charger states 5V/1A on the charger itself.
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Click to collapse
That doesn't mean much. That is the MAX the charger can output. The amount that the Thunderbolt will pull varies. If it thinks it is plugged into a USB, it will be less then 500ma. even if the charger is capable of 10 amps.

worwig said:
That doesn't mean much. That is the MAX the charger can output. The amount that the Thunderbolt will pull varies. If it thinks it is plugged into a USB, it will be less then 500ma. even if the charger is capable of 10 amps.
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Click to collapse
i have used the Palm car charger, checking with bmw, it shows around 850ma, same as on my htc charger.

worwig said:
Any charger that is at least 1 amp. will do. The phone 'pulls' a max of around 0.85 amps. No need for more then 1 amp.
If it has a replaceable cable, it must be the heaviest gauge, shortest cable, that you can use. I have seen long cheap thin cables that drop over a volt, and the Thunderbolt charges really slowly.
The charger or cable have to state that they for rapid charging. To rapid charge, you need to have the USB D- and D+ lines shorted. If that are not shorted, the Thunderbolt limits the charge current to around 0.35 amps. thinking it is connected to a PC. If they are shorted, letting the Thunderbolt know it can be rapid charged, you get up there around 0.85. You can easily modify the charger for high rate if it is good for at least an amp.
And in the end is heat. Heat and lots of it. It will damage the battery. So put it out of the sun and in cool air like near a vent.
Click to expand...
Click to collapse
um, i am aware that any charger that will do 1A will do. that was my question, what car charger will do 1A. Alot of times, they dont have that info listed on pages that are selling them.
and the whole thing about the D- and D+ shorted together, i do not believe. the HTC cable that came with the phone does rapid charging and i use it for data all the time too. if they D- and D+ was shorted, i would not be able to use it for data transfer. not unless the HTC charger shorts them internally inside the charger.

leoingle said:
unless the HTC charger shorts them internally inside the charger.
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Click to collapse
Bingo!!

leoingle said:
um, i am aware that any charger that will do 1A will do. that was my question, what car charger will do 1A. Alot of times, they dont have that info listed on pages that are selling them.
and the whole thing about the D- and D+ shorted together, i do not believe. the HTC cable that came with the phone does rapid charging and i use it for data all the time too. if they D- and D+ was shorted, i would not be able to use it for data transfer. not unless the HTC charger shorts them internally inside the charger.
Click to expand...
Click to collapse
Yes, it is hard to find the current info online or even on the package sometimes.
Yes, it is shorted in the charger. I have seen it done in the cable and the cable can't be used for data of course. Not sure why anyone would do that, but they do.

[Q] Slow Charge

Not sure if this is an issue, or if its standard. But here is what im facing.
A charge off the wall will get my Tmobile SGS2 to a full charge (from around 15%-20%) with the stock plug and cable in about an hour to an hour and a half. However charging from my laptop or from a car charger im only getting a total increase in battery 15% in an hour. I tried to use the stock cable with the laptop and got about 25% in an hour and a half. I tried to use the stock cable in my car and only got 7% in 45 minutes.
Anyone have any ideas?

When charging from the car or from a laptop, the power is limited to what the cable/charger can supply which might not be sufficient for the SGS2. For the car charger, you can try buying one that supplies more amps, but for the laptop, theres really nothing you can do, as it is limited by the USB cable itself.

Do you mean the USB cable or do you mean the actual plug & internal workings of the laptop? because i have tried several cables. And just also remembered that i tried the stock cable as well with crappy results.

you can buy a 2A charger, and it will charge a lot faster, that's what i use in my car
at home or office, i just use the regular charger, as i always carry extra battery packs

When you plug it into the laptop it only gives out a limited amount of amps unlike the regular charger that came with the phone. The one that came with the phone regulates the charge so that it doesn't overcharge your device or anything. The laptop USB plug is supposed to be meant for peripherals like a mouse and stuff so it doesnt give out that much amps, therefore charging slower than a regular charger.

I use the t-mobile rapid car charger, It can charge this beast in about 45 minutes. It also has a 2nd port for a 2nd device.
Deebo took your bike too?

Really?! I've never seen my charging current go over 700 mA, even with a 2 amp charger.
I'd happily give up some long-term lifetime for faster charging.
Sent from my Galaxy S II using Tapatalk.

They have a home charger too that's a home charger plus car charger in 1. I use them in the cars but they're great for trips cause you have a 2 in 1 charger.
With 3 batteries and a external charger though, I never need a home charger and haven't even put this on a charger yet.

Just as most of the others have said here, the charge is going to be limited to what the source can put out. If you get another charger (2A charger) then it will be able to charger faster but you also want to be careful with using after market chargers there are some that can negatively affect your battery by overcharging which is when the phone gets fully charged but the charger does not ever stop with the flow of power to the device.

Ok Thanks all.
Guess i need a new car charger and something for the office.
Also did some crawling through "Mother of all battery life" thread found some good ideas there for making this thing last longer on the charge its got.

Im having the same problem my fone takes forever to charge...im pluged into the wall using the charger in the box n it took me no joke 7 hours to charge my fone!
Im on it rite now as its plugged i to the wall n im losing power instead of charging...i tested the voltage n its fine ...is tgere anythin i can do?
Sent from my SGH-T989 using XDA Premium App

I, myself, actually haven't used the OEM charger that came with the phone. Although I did notice it is quite small and the phone battery is a 1850mAh (larger than normal) that might affect the charging rate. I am currently using the old HTC charger that came with my Sensation and it charges fully in about 2 hours. If you want a charger that charges your phone in an hour and a half, I recommend going into a T-mobile store and grabbing the Wallcharger they sell. It charges 33% faster than OEM chargers and does not harm your device nor kill your batteries.
You can find it by clicking here

Exactly same problem as OP.
OEM wall charger charges phone to full in couple of hours but laptop USB or car USB is doing at 10% / hour assuming you don't do anything on your phone but just leave it there to be charged. Otherwise you'll be losing battery rather than being charged.

513263337 said:
Exactly same problem as OP.
OEM wall charger charges phone to full in couple of hours but laptop USB or car USB is doing at 10% / hour assuming you don't do anything on your phone but just leave it there to be charged. Otherwise you'll be losing battery rather than being charged.
Click to expand...
Click to collapse
As explained in previous post, this is due to limitations in the laptop USB drive and depending on what car charger you have, the phone might suck up more juice than it is able to provide.

so this is nothing a kernel or any other tweak can fix?

mightymike889 said:
so this is nothing a kernel or any other tweak can fix?
Click to expand...
Click to collapse
no a new kernel or any other tweak wont work.

So i gotta buy a new charger!?!
Sent from my SGH-T989 using XDA Premium App

Yes, or if you have like an old microUSB charger from HTC or another Samsung phone (Samsung Vibrant) you can try using those.

the 2A chargers from BlackBerry are the best

So, you guys are seeing the phone draw over 700 mA (when the charger is capable)?
If I use my iPad charger (2A), I still top out at 700 mA, and the ~4 hours that go with it. :/
Even my 1A car charger tops out at 700 mA, that's why I thought it was a hardware issue.
Sent from my Galaxy S II using Tapatalk.

Solar charger for Samsung Galaxy Note-II

I'm looking for portable (camping/hiking type) solar charger for Samsung Note 2 (T-Mobile version). Just bought GOAL ZERO Nomad 7+ Guide-I/O Plus (which is AA/AAA battery bank. When I plugged in my Note into the solar panel instead of charging it was draining battery, so after 2 hour I wen from 35% down to 19%. I did testing on the battery bank (from USB to micro-USB on the phone and it works fine). So my question is:
1) is it possible that the panel is defective or Note2 is simply so incompatybile with the whole world ?
2) is there any other nice solar kit that would work and at the same time is small and light enough.
This is also possible because Note-2 (as well as Galaxy-3) uses 11 pin instead 5-pin USB pinout...
Eventually I would like to charge also my Samsung SLATE-7. I plugged it to the panel through the lighter outlet (as I have an extra charger that takes the power from the lighter then converts it to the higher voltage/amps - I believe is is around 19-20V). The only problem is that (as I herd) charging this way would be pretty slow. I have spent several hours last two days trying to find something that would work but after my several bad experiences with Samsung I have to be 100% sure when I order something on line. In this case I was lucky as I bought Nomad-7 at REI store so I can easily return it. I've seen several nice chargers on line today but at this moment I cannot be sure that anyone of them would work.
Any advice appreciated.

The note 2 requires at least a 1 amp output JUST to run while you're using the device (ie screen on)... It will charge slowly at 1 amp with the screen off and the phone not in use.
1.5 amps is recommended minimum to charge while you're actually using the device...
2 amps is the stock wall charger...
USB 2.0 output is only 500mA... Which is enough to trickle charge the note 2 while not in use.
So basically... look for a Solar charger that has at least 5v 1amp (if not 2amps) USB output. That should charge it. Or it my opinion? Invest in a 11,000mah + External usb battery and separate Solar panel kit. Most solar kits come with dinky 4000mah or less battery packs which is barely enough to charge your phone once. (if that)

Car charging issues (standard S20 5g)

So i've had this phone for a few days and took a road trip and camped this weekend. To say the least, I had a good feel of battery usage of this phone for my typical tasks.
During my road trip, my phone started with about 92% when i threw it on the charger and started driving. I noticed it was charging up to 96% and it started to discharge slowly after about an 45 minutes of driving The phone indicated it was being charged. When I purchased this phone I also purchased a 6a car charger (dual port, 3a each), and also some USB-C to USB-A cables rated at 18w. If I disconnected the power for a little bit, and reconnected, it would charge maybe 3-8% before stopping again and I would repeat the cycle to ensure I had enough battery to allow navigation to take me to my destination. Luckily, I made it to my campsite with 82% battery to spare.
Now the strange thing- when I left this morning to come back home, I had 100% on my phone as I charged it with a battery bank fine. I left the phone plugged in to my car charger as I left, and it stayed at 100%. I even let the phone discharge to 94%, and plugged it in and it was able to charge to 100% with the navigation on as well as pandora.
Am I doing something wrong? Am I supposed to be using a USB-C type charger? Maybe I need a better rated cable?
Would love some help. I'm coming from an S7 edge so a lot has changed. thanks!

liberalswine said:
When I purchased this phone I also purchased a 6a car charger (dual port, 3a each),
Click to expand...
Click to collapse
I'm going to guess the charger just isn't that good, which one was it?

peachpuff said:
I'm going to guess the charger just isn't that good, which one was it?
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Click to collapse
It's a qualcomm based charger. https://www.amazon.com/AILUN-Charger-Qualcomm-Adapter-Compatible/dp/B01N8PPY1H

Sometimes while driving these things can work loose in the lighter socket, a slight touch fumbling around near it (my dash cam does this), or some bumps in the road.
I suspect on your outbound trip the charger might have been getting intermittent power from being not quite pushed "home", but on the return trip you could have pushed it in harder and it stayed put.

yrp888 said:
Sometimes while driving these things can work loose in the lighter socket, a slight touch fumbling around near it (my dash cam does this), or some bumps in the road.
I suspect on your outbound trip the charger might have been getting intermittent power from being not quite pushed "home", but on the return trip you could have pushed it in harder and it stayed put.
Click to expand...
Click to collapse
this wasn't the issue as I tried unplugging it and tried various 12v sockets in my car. However I think I did figure out my issue. The new charger i'm using does not use the "PD" protocol that the newest samsung phones use. Also, although the car charger i have is a qualcomm 3.0 protocol, and 36w- it's actually at 18w per usb A socket. The s20 wall charger is rated at 25w- so I'm now looking for a usb car charger that has a dedicated usb c socket with at least 25w of power and supports PD and pps

I'm using this one, no issues https://www.amazon.co.uk/gp/product/B07VP3HLGW/

jonboi said:
I'm using this one, no issues https://www.amazon.co.uk/gp/product/B07VP3HLGW/
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is "super fast charging" enabled with that charger? I just ordered: https://www.amazon.com/gp/product/B077ZRBPNB/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
I read somewhere that the newer samsung devices require PPM protocol in order for super fast charging rates to be active (as well as PD)

liberalswine said:
this wasn't the issue as I tried unplugging it and tried various 12v sockets in my car. However I think I did figure out my issue. The new charger i'm using does not use the "PD" protocol that the newest samsung phones use. Also, although the car charger i have is a qualcomm 3.0 protocol, and 36w- it's actually at 18w per usb A socket. The s20 wall charger is rated at 25w- so I'm now looking for a usb car charger that has a dedicated usb c socket with at least 25w of power and supports PD and pps
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I've reconsidered using fast chargers after the purchase of the S20, we've started using old 7.5W and 10W AC power adaptors. The 7.5W charger brings the phone up from about 30% to 80% in about 75min and I am fine with that. I have also used the 5W S3 charger but I think I'm happy with using the 7.5W charger.
If I need a fast boost I can always pull out the 25W charger.
I did buy a Belkin 18W PD car charger with the phone thinking "yeah, I need this" but now I will only use it for emergency charging. Tomorrow I'll pull out an old 10W car charger and plug the phone into the 10W socket while I drive around, see what happens.

Well I got into the car at 10:55 with the battery around 26%, plugged it into an old car charger I bought for our S4s (Pleomax, apparently OEM for Samsung) which has 2A & 1A outlets. It's not obvious on the charger which outlet is which but turns out I used the 1A outlet (AccuBattery showed the charging current hovering around 1000 mA).
Anyway, after 1hr of driving to my destination with a 5min break to fill up, the battery reached 66% so the 1A car charger raised the battery by 40% in about 60min, which I think is quite acceptable.
Car connected by BT for phone/SMS, received 1 call only. GPS/NFC etc are usually kept off.