Chosen Solution
I have an acer Nitro (i7-4720hq, 860m) and it has a new battery I put in it. But for some reason it boots for 5 seconds (on battery power) just to turn off. Then I boot it with the ac adapter and it boots fine, unplug it, then it works as it normally should on battery power alone. So I am confused why this is the case.
@has99crafting I would agree with jayeff that calibration is worth looking at. This site looks fairly good for instructions: https://shahrukhathar.info/how-to-calibr… I fixed one last year by just leaving the battery out for about a week, I think - maybe longer, and it works fine now.
Hi @has99crafting , Try getting into BIOS on startup and check that you can do this OK when on battery only and that it doesn’t shutdown. Press F2 on startup to access BIOS before it boots into Windows. If it boots without the Acer splash screen you may have to disable Fast Startup in Windows and then restart the laptop so that you can get into BIOS without going through Windows. If that works OK then I ‘m thinking it’s an OS problem. Just to make sure all is OK with the new battery create a Win 10 battery report and check the Design capacity value against the Full charge capacity value. Being a new battery they should be the same. Also I can’t find it in the user manual but when in BIOS check if there is a battery calibrate option at all.
