Battery replacement 10.8v VS 11.1v

Hi all

I have a old laptop that is still usable but the battery is old and starting to not hold a charge like it used to. The old battery is listed as a 10.8v. I have been able to find a replacement battery that has the same part # as the battery I currently have for the same model # of my computer but I can only seem to find that replacement battery in a 11.1v option. I don't want to spend a lot of money on it due to its age but I don't want to ruin it either. I have looked on the internet/search engines and can't seem to find a consensus if replacing the 10.8v battery with a 11.1v battery will do any harm to my computer or not. I would still be using the same charging cord the laptop came with. Can I use that 11.1v battery without harming my computer or not ? Thanks in advance for the replies !

Lithium ion batteries have a working voltage range, & different countries / companies tend to specify the voltage of the same battery slightly differently - for instance DeWalt power tool batteries that are sold as 20V in the USA are sold as 18V in the UK. So a battery specified as 10.8V is almost certainly exactly the same voltage as as one specified as 11.1V - & in any case if they were actually different voltages the difference is only 3% which would not be a problem.

EDIT the nominal voltage of one Lithium ion cell is 3.6V, but sometimes 3.7V is used. So your battery probably contains 6 cells arranged as 3 parallel connected pairs connected in series. .3.6V x 3=10.8V - or 3 x 3.7V = 11.1V.

Edited by rqt, 11 February 2021 - 04:21 PM.

Topic closed, spam magnet.

Louis