How to make Android detect the correct battery percentage when using an external soldered charger - General Questions and Answers

I have a phone that needs to be always connected to an OTG cable which does not support simultaneous charging. So to charge the phone I soldered a small USB lithium battery charger directly on the battery pins. And it works, but the phone does not display the true battery percentage until I reboot it. I think it's because the Android system isn't aware that the battery is charging and thus it doesn't allow the battery percentage to increase, but only to decrease.
So my question is: there is a way to make the android system "recalculate" the battery percentage without rebooting the phone? Something like "resetting" the battery service?
The phone is rooted, if it matters...

Related

[Q] - Battery Calibration on Nexus S

Bought a brand new nexus s a few days ago, but having issue with the battery percentage indicator and with the AC adapter.
I charge the device until its full (getting a full battery indicator and also in the status menu i see 100%) but the instant i disconnect the AC adapter it drops to 95%
And another issue is with the AC adapter, when i use it i see in the status menu that it indicates that the charging type is USB instead of AC, when trying an HTC Desire AC adapter the charging type is AC
Is a battery calibration is necessary with a new device and if so what is the correct why to do it ? And what's the deal with the AC adapter ?
Thanks
majorgoose said:
Bought a brand new nexus s a few days ago, but having issue with the battery percentage indicator and with the AC adapter.
I charge the device until its full (getting a full battery indicator and also in the status menu i see 100%) but the instant i disconnect the AC adapter it drops to 95%
And another issue is with the AC adapter, when i use it i see in the status menu that it indicates that the charging type is USB instead of AC, when trying an HTC Desire AC adapter the charging type is AC
Is a battery calibration is necessary with a new device and if so what is the correct why to do it ? And what's the deal with the AC adapter ?
Thanks
Click to expand...
Click to collapse
This has been brought up multiple times on the this forum - next time please do a search.
[A] It's how Samsung or Google have designed the phone, doesn't let the phone charge fully 100% as to prolong your battery life.
Why did they do that using software? That's stupid.
They should have lowered battery specs in the hardware and keep the software go upto 100%.

[Q] Using an external battery to power phone: Some problems...

I hope this is the right forum for the topic.
First I want to describe my situation:
I want to use an older phone as a webcam. The webcam is outdoor and there was no power source available.
So I bought a solarpanel which has an inbuilt USB charger for phones. The solar panel works great and it doesn't take long until the battery is full.
The problem is that the sun is not allways there when you need it I needed a battery with higher capacity that the phone (webcam) can be used longer without the need to get charged. So I bought two 5000mAh batteries from Amazon, connected them in parallel and changed them with the orignal battery from the phone. (btw. the phone is a Huawei Ascend Y201 Pro)
The problem is that the phone won't charge the battery. I found out that the third pin in the phone is to monitor the battery. If that pin is not connected the battery won't be charged.
Do you have any idea how to solve this problem?
First I thought about buying one of these external battery packs. But all that I found have a button that has to be pressed in order to charge the battery. But that is not possible because the phone (webcam) should work autarkical.
Some have an autostart function but after the battery is full it is required to replug the phone in order to get the battery charged again. Is there an app maybe that can disconnect and reconnect the USB connection without unplugging the cable?

Live battery charge percentage indicator ?

Hello! I need a little help finding an app or a tweak if any exists.
I have samsung galaxy tab(GT-P3110), the charging port is totally destroyed, so now the only way to charge the battery is to directly charge it. I opened the back of the device and extended two wires (+) and (-) from the battery socket and then put back the cover. So now I charge the device by connecting those two wires sticking out of the device with the stripped end of a usb cable.
I know this way of charging is damaging the battery or inappropriate, but atleast i'm able to use the device than just uselessly throwing it away.
When i use the device, there is no real way to say how much charge is remaining. Even if the device is charging, the device shows that the charge is decreasing like as if it wasn't charging but it is. and once i reboot, it shows the real increased charge %.
So i wanna know, is there anything i can do to get real battery stats while the tablet is still on?

LG G5 Battery Drain Whilst Charging

Hello,
My LG G5 battery is always drained while i'm charging and using it at the same time.
The problem is, when the battery level at 5% or lower, the charger doesn't seem to work as the battery keeps draining until it goes off.
I have to use the battery kit to charge the battery back to normal level. Luckily i have 2 batteries.
This is not normal for Android phone because with another phone brand, you can still use it normally without draining the battery even if it is at 2%.
Does it mean my phone have problem with the battery (or the handset), or this is a common thing in LG G5?
Sent from my LG-H860 using Tapatalk
Replace the usb c cable, the cable has more than 8 nodes at least one of the nodes is disconnected. It will alow usb charging and data transfer but fast charging won't work so you have to replace it.

Question 85% batt prot question

If battery is charged to 95% and i turn on 85% protection, and cable from charger is still connected - battery percentage do not drop down, and there is no loading indicator either. Is smartphone using only energy from charger bypassing battery?
?
Hi, my understanding is that the phone always use the battery, but I may be wrong. It's an interesting question. Did you wait enough time to confirm that battery wasn't dropping, in this condition?
Marcelocohenarg said:
Hi, my understanding is that the phone always use the battery, but I may be wrong. It's an interesting question. Did you wait enough time to confirm that battery wasn't dropping, in this condition?
Click to expand...
Click to collapse
Yes, no dropping, and no indicator that it is loading.
On menu diagnose phone said that charger cable is not connected.
(when turned on 85% prot after above 85)
Do this: when your battery is below 85% go to settings battery diagnose and check charging through cable.
Status will be normal.
Now disable 85% prot.
Charge to 88%.
Do not disconnect charging cable.
Enable 85% prot.
Battery status indicator will still look as not charging.
Again go to settings battery diagnose and check charging through cable.
You will see that it is not charging, but battery % will also not drop anymore when cable is connected.

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