Can't charge from external battery - AT&T LG G3

I have 2 external batteries one is 3000mAh and the other is 8000mAh, I have previously used them both with another device with no problems. When I plug either into my G3 it stops charging after about 5 seconds. I can however charge from a car charger, just very slowly. Anyone else experience this? (yes I have confirmed both batteries indicate they are full before trying.)
Listed output for 3000mAh battery is 5V, 1000mAh. 8000mAh battery doesn't have that info printed on it, will update if I can find it.

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SDA won't power on: How to determine a working battery

I woke up to find my SDA powered off and unable to power on, which was odd considering it was plugged in to a (Motorola) charger.
Since the orange charge light doesn't come on at all, I suspect it's just a dead battery. I've touched the battery contacts to a battery tester with no response - as if the battery is totally dead, which is promising. However, I can't be sure I'm doing it correctly since I've never tried this on a battery I know is working.
There are 4 contacts on the battery, and I'm wondering if there's more to it - like needing to have 2 contacts touching the positive lead and the other 2 touching the negative lead.
Can someone try testing their battery and see which contacts give a live (charged) result?
Thanks
kentchristopher said:
I woke up to find my SDA powered off and unable to power on, which was odd considering it was plugged in to a (Motorola) charger.
Since the orange charge light doesn't come on at all, I suspect it's just a dead battery. I've touched the battery contacts to a battery tester with no response - as if the battery is totally dead, which is promising. However, I can't be sure I'm doing it correctly since I've never tried this on a battery I know is working.
There are 4 contacts on the battery, and I'm wondering if there's more to it - like needing to have 2 contacts touching the positive lead and the other 2 touching the negative lead.
Can someone try testing their battery and see which contacts give a live (charged) result?
Thanks
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Click to collapse
Normally you shouldn't try to use chargers not designed for your phone. What has probably happened is that there wasn't enough current output in the charger, and it completely drained your battery. Your battery is probably fine. Get a proper SDA charger and try charging it again. You can even take it to a store and ask them to plug it in for 15 minutes while you browse the new phones.
Yeah - I lost the original charger, but I've been charging with this Motorola one (output 5V / 550 mAh) and via USB for the past 6 months without problem. I still think it may be the battery because it was at 50% when I went to sleep.
What are the output specs of the original charger?
kentchristopher said:
Yeah - I lost the original charger, but I've been charging with this Motorola one (output 5V / 550 mAh) and via USB for the past 6 months without problem. I still think it may be the battery because it was at 50% when I went to sleep.
What are the output specs of the original charger?
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Click to collapse
The stock HTC charger (model ADP-5FH K) has output of 1A at 5V. But if you had no trouble charging before it shouldn't be a issue, unless the charger/battery is faulty.
If you have a multimeter you can verify this. To check if your battery is charged place contacts in (+) and (-) contacts on your battery and it should show ~3.7V. I just tried this.
s!lencer said:
The stock HTC charger (model ADP-5FH K) has output of 1A at 5V. But if you had no trouble charging before it shouldn't be a issue, unless the charger/battery is faulty.
If you have a multimeter you can verify this. To check if your battery is charged place contacts in (+) and (-) contacts on your battery and it should show ~3.7V. I just tried this.
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Click to collapse
Thanks, silencer. I don't have a multi-meter, but I was using the battery tester as a way to gauge whether it was putting out any current at all, and it sounds like it's not. You were testing the 1st and 4th contacts?
I have read elsewhere that if your battery goes below 10-20% you won't be able to charge it with anything but the stock charger, so I think that's the problem, but I'll probably order a new battery as well just in case.
Yes I check the voltage between first and forth contact. What sort of battery tester are you using? Is there a digital read out display?
You can also try a USB to mini-usb cable to see if the battery get charged. From what I can remember USB ports are designed to give 500mA at 5V, but I have charged my phone when it was flat using a USB cable.
To follow-up in case anyone has this problem in the future: I ordered a new original charger (ADP-5FH) off eBay and with it, the phone's orange charge light came on right away and after giving it a full charge my phone is back up and running.
I'm inclined to think that it's not the difference in mAh of the original charger (1000mAh) vs USB charging (500mAh), but that there is something unique to the original charger which can "turn on" the charging when the battery is completely dead - perhaps something communicated by one of the extra pins in the mini-USB connection.

[BATTERY] Cradle Chargers // Voltages, mAh

I'm interested in buying an external battery charger, or a cradle charger, so I can have two batteries going—one always charging outside of the phone—and thus never having to plug my phone in to charge. After a brief eBay search, all of the cheapest ones appear to be the same: you can find the model I'm referring to here.
My concern, however, is with the specifications listed, which read:
Input: AC 100-240V~50/60Hz 0.15A
Output: DC 4.2V~350mA~±50mA
USB: 5.2Vd.c.800mA
The output appears to be 300-400mA, which is slightly lower than a stock charger. As far as I know, this tells me how fast it will charge the battery. Since it will be plugged into the battery charger when I swap batteries (for the full discharge of the other battery), I don't care if it charges slower. However, the voltage appears to be quite low at 4.2V—and I'm entirely unsure how this will affect things. Will it still charge? Can it do damage to the battery? Should I not purchase this unit? What exactly does a lower/higher voltage mean?
Anyone?
Does it work? Is it safe? Does the lower voltage matter?
I've been using this same battery charger for over a year now. It charges my stock and extended battery (3500mAh) without any problem. Yes it does take longer compared to the normal charger to charge your battery because of the low mA but I don't think it has had any affect on my batteries. So the only downside is it takes comparatively longer to charge.
mo_danish said:
I've been using this same battery charger for over a year now. It charges my stock and extended battery (3500mAh) without any problem. Yes it does take longer compared to the normal charger to charge your battery because of the low mA but I don't think it has had any affect on my batteries. So the only downside is it takes comparatively longer to charge.
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Great! That's what I wanted to know. Thanks!
I have this charger as well. I can confirm that I have have not had any problems with the charger sense I got it. I ordered mine from Amazon here:
http://www.amazon.com/2600mAh-Batte...3352199&sr=8-4&keywords=Galaxy+note+batteries

Stock charger for extended battery???

Hello, I recently got my 6500mAh extended battery for my N7100 and I found that charging was pretty slow with the charger that comes with it (about eight hours for a full charge) compared with the stock charger that can charge the stock battery within one hour and half. Therefore, after reading the spec of the charger, I discovered that the slow charge was come from the fact that the output amperage of the charger was 800mA (800mAh). Therefore, by some calculation, 6500mAh/800mAh which was equal to eight hours. So, I then looked at the spec of the stock charger and I noticed that the output amperage is a bit higher, 2A (2000mAh). By the same calculation, I can predict that with the stock charger, I only need about three hours to completely charge my extended battery. Does anyone attempted to use a stock charger to charge an extended battery?

Discharging while using Navigation

Hey Guys,
So I was recently on a trip this weekend and was using Navigation on my Nexus 5 for a 4 hour drive. I had noticed though after a short while that while I had my Nexus 5 plugged into a charger it was still continuing to drain battery.
With my Galaxy Nexus in the past I was able to run Navigation / Music / Etc.. all whilst still charging so it came as a disappointment when I saw this.
I made sure that I was charging on (AC) mode and it still continued to fall, albeit a little slower than (USB) mode though. When I went to the battery usage navigation had taken up about 59% of the battery drain, I was surprised because I though it would have been the screen but that was only like 14% of the battery drain.
Anyone else run into this issue?
Check the Amp output on the charger. Anything less than 1A will not charge the phone while in use.
I had the exact opposite issue with my G-Nex, the "rapid" charger I was using only output 550mAh as opposed to the 1A that is required to charge while in use. I don't believe it is an issue with the phone, it's probably just the charger. $10 to $20 will get you a nice, reliable one with the proper output, and possibly an additional USB port.
Hopefully this helps
Don't buy cheap car chargers, just not enough power. I use a Verizon car charger that has an extra USB port for charging another device and it charges while the device is in use.
Thanks for the input guys, unfortunately the charger was 1 amp that I was using. I do have another car charger that I use and none of them are the cheap USB ones. I guess I'll have to do some more testing with the other car charger that I have.
I was just mainly concerned, not if there was something wrong with the phone, but with the fact that even when charging in AC it wouldn't keep up with navigation's wear on the battery usage.
Thought I would update to confirm that my Galaxy Nexus car dock charger charged it extremely well after testing while navigating.
Definitely was the other one I was using.
When you switched chargers did you happen to also use a different cable? I couldn't get any of three different chargers that I tried to keep up with the GPS battery drain. Then I realized I was using the same cable with all 3 chargers. The problem was that the cable kept the phone in DC charging mode at nothing more than 0.5 amps. I bought this fast charging cable on Amazon and now I actually gain battery percentage even while using my GPS full time.
http://www.amazon.com/gp/aw/d/B0088HTYUE/ref=ya_aw_oh_pit
jalanjkcarp said:
When you switched chargers did you happen to also use a different cable? I couldn't get any of three different chargers that I tried to keep up with the GPS battery drain. Then I realized I was using the same cable with all 3 chargers. The problem was that the cable kept the phone in DC charging mode at nothing more than 0.5 amps. I bought this fast charging cable on Amazon and now I actually gain battery percentage even while using my GPS full time.
http://www.amazon.com/gp/aw/d/B0088HTYUE/ref=ya_aw_oh_pit
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Click to collapse
I had exactly the same thing with my old phone and discovered it was the cable not letting more than 380 ma pass through it.
There are apps like this https://play.google.com/store/apps/details?id=ccc71.bmw that let you monitor mah in and out etc so you can test out different leads and chargers
Sent from my Nexus 5 using Tapatalk

[Q] Special Charger

Does this tablet require a special charger as i only seem to be able to get it to charge using the charger that came with it. if i try a power pack or any other charger it will not charge
It requires a 3amp or better charger at the standard 5V. I've successfully used battery banks and chargers that have 3amp or more. Most of the newest chargers and battery banks that support quick charging via the orange USB ports should provide 3amps and work fine from what I've experienced.
Sent from my LGMP450 using Tapatalk
What you might find is that the tablet does not report that it's being charged but it is actually being charged, very slowly and there's no indication of it taking place...
The way to check, is to plug in the tablet and note the battery percentage, leave it charging (with no indication that it is!) and then come back and check the battery percentage, you'll see that it's actually climbing up!
It does take a long time to charge on a 5V USB charger but the reason it doesn't show that it's charging is supposedly because the tablet needs to see at least 12 volts...
I've just ordered a 15v charger on Aliexpress for $5 shipped, to see if I can speed things up.
Still need to sort out the dead dock battery and may well get one from Aliexpress too...

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