lenovo yoga 910-131kb battery won't charge

Oct. 6, 2021, 12:03 a.m.

" lenovo yoga 910-131kb battery wont charge "
a couple weeks of internet searching that term and yet no joy..
freebie to me,,the I7 ,seventh gen version..man date 16/11/28 as on the back case.
came with no PS so i bought a new 45 watt Lenovo brand for it.
battery had %20 when i got it,that soon went away.
like most i suspected battery and bought a new one.
no joy..
reading forums pointed to the usb board as a suspect,,bought a new board,,no joy..
does not power on with battery removed.
when left plugged in overnight it will power on and is usable.
when running it is beautiful !! even with win 10 ..
last thing i tried was a hard reset,,pull battery and hold power button for 30+ seconds.
opened up the old battery pack,, a 4S ,, seeing them made me smile as i have several packs taken apart with good cell's i could replace with..tehy all had over three volts,,,no jot finding a bad cell..internal resistance is fine.
i am charging each cell to an even four volts and will put it in and see what happens,,just to know i guess because i dont expect much..sadly i did NOT check voltage on the new battery,,would have been nice to know..i know being a lipo it was sent low,,dont remember how it degraded after installation.
should i pursue further on a five year old laptop ??
or use the shotgun approach ?? i have several to choose from :)
i looked at prices for another,,i have laptops and have tablets so this is not needed but sure would be nice..
worth sending to Lenovo to be repaired ??
or a shop that could fix it ?
any suggestions at all ??

Oct. 5, 2021, 12:48 a.m.

It might need a 65w charger to charge... 45w charger could be too low to charge and run it

i bought one and sent it back because no change in problem from this 45w charger,,but maybe i should have given it more of a chance.. ?

Oct. 6, 2021, 12:55 a.m.

Battery pack BMS often have fuses in the IC that trip if a cell or the pack as a whole over discharges. This is half to protect the user and half to ensure that you buy a new battery as you often can't replace a cell or group of cells.

thank you,,brand new battery shouldnt have that problem tho,,;;

Oct. 6, 2021, 9:44 a.m.

the old one apart enuf to get to the cell's... on top is a lipo cell from one of my toys 🙂 cheap and easy to replace..slow charging the cells up to a value enuf ( i hope ) to be able to update battery driver and other things..have to get them over 3.7 volts a cell.. older machines with li-ion 18650's would be SO much easier to work with ..

Oct. 6, 2021, 12:45 p.m.

to add on a question while i'm here,,,any idea why it wont run with no battery in it and just off charger ??

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