09-28-2018 10:18 AM
I am having issues with my battery on my T400. The orage light started flashing when I installed windows 10.
In the windows task bar it shows: plugged in and charging.
When I remove AC power screen flashes 'battery critically low' and turns off.
I have purchased a new OEM 33+ battery and still no change apart from windows task bar shows: plugged in and not charging.
Does anyone know what could be causing this issue???
Many thanks in advance
09-28-2018 01:16 PM
Does your system have two batteries or only one?
Do the battery(s) and the charger show up in device manager?
Here is a procedure that has helped a number of people. If you do not have a 2nd internal battery skip those steps!
I may have some extra unnecessary steps in here, but I wanted to be sure I didn't screw it up:
09-29-2018 03:26 AM
I only have a small round internal battery for clock etc. and the removable battery (x2) at the back of laptop.
I done as you asked and I found I did not have the option to disable battery in bios.
This then voided all other steps.
Luckily I had ordered another battery (non OEM) from ebay.
When I fitted this to my laptop the light went green straight away.
I take it that both the other batteries have damaged cells???
Do you know if there is a way of testing these?
Many thanks for your help!!
09-29-2018 06:14 AM
I am not that familar with the internals of the T400, so yes...
Apparently you only had the one external battery.
The Lenovo Vantage tool has a battery check/reset function in it:
Hardware settings --> Battery --> Power gauge reset
follow those instrucctions,
and once the "reset" is complete it will tell you details about the battery condition.
In you case it may not be very helpful but ... it cost nothing to give it a go ;-)