@Luksus the difference in batteries is where they are made and i think that this is where the problem lies.

@Luksus does this have the battery charging problem?

@MrT10001 thanks dont have windows and not dont have a working laptop for gimp.i think the battery problem lies with the battery and where it is made having seen a photo of a battery on a similar thread,might be worth checking the tablets that have this problem and see where they are made.

@yuu-ä3 having problems uploading picture asthe file is to big and idont know how to shrink it.
Looking at both the batteries which are both genuine the battery that doesnt behave is from Sunwoda electronics and the one that does work is from NingDe Amperex Technology limited,
I have also used a generic battery bought from ebay at that worked as it should.hope this helps

@yuu-ä3```

So bought myself 605f the battery wasnt that good so i replaced it with an oem battery allworks fine though the battery graph in settings doesnt read properly.
I swapped the battery from my 605l with the old battery from the 605f Hey presto the tablet battery is being read by upower and the the battery level is not reading at 100% and is charging correctly.
The battery removed from the 605l was a genuine lenovo battery. and was working with its original operating system.
For me this problem is solved

@mrt10001 was having a look in the logs in recovery mode and found thi seems like its not picking up the battery but I'm no expert.this is my second install first one was a redmi 7

Hi just installed ut on a lenovo 605l. 32gb The battery level is at 100% doesnt drop and the tablet only works when plugged into the mains i ran upower in the terminal and this was the result when the charger is unplugged the only change is the state which changes to discharging instead of charging