Originally Posted by ja.andro
I have been facing constant battery drain for sometime now. Even while charging, battery keeps on draining without much of heavy use.
Your battery sounds like it sucks.
I am using a method on my phone that shows me (about) how many mA is going in and out of the battery. An App called CoolTool amazingly loaded and complex app, which can do an overlay. I use this app for only One visual overlay, the mA display. (current)
I wont tell you how to set it up, because you will find it. I will tell you it shows how much power is being sucked up, and the reverse shows negative numbers when being charged , at least when being charged faster than it discharges. Set it to update every 30seconds, not a great update rate , but given enough time you can see what is going on. There is another program called "current widget" capable of faster updates, but does not do overlay (cause its a widget), It will work to show power on this here lg too, but i do not find it as usefull, and high update rates could take a bit more battery.
Speaking of charging faster than discharging, turn on the wifi and the screen and mabey some background garbage, then charge it up with either a lightweight wire (to much resistance) or a charger that does not have a good output. And it will use more power than you can put in
So when charging on either of these apps that shows current, you eventually want to see actual Negative numbers like -1000 for a fast charge from the OEM charger.
So get a view going , and you can see what is happening. Not all the phones will show this current, and not very many programs do it, And with coolTool we also get to see it (overlay) when gaming, and watching movies. so it is a start to discovery. I have no affiliation with all these programs that i am ending up recommending, other than having been through google store hell for ages trying to find the right ones.