03-19-2012 05:29 AM - edited 03-19-2012 04:16 PM
Just faced a rather strange issue, but not really an issue, just different system behaviour than expected.
No other accessories connected.
I was using the system till it power itself off due to low power (0% reached for both batteries). i.e. Ungraceful Windows shutdown. Then upon pressing the power on button, the LEDs flashes, no THINKPAD logo or BIOS message appears, system appears to then restart again, and the LEDs flash again...and loops until it was no longer able to even attempt to POST.
Either display the message that says "Battery level is too low".
Don't loop (this is the behaviour when only the 55++ battery is connected at 0%)
Why does having the 27++ would make the system go through this looping cycle?
03-22-2012 06:19 AM
I can understand your issue very well, as there is no message comes on the screen which gives you information to plug the power adapter and prevent the laptop to get shut down.
You should install Power Manager software and then customize it as per your requirement.
The software can be download from the mentioned below web link.
Hope, after this laptop will not shut down automatically due to battery backup
03-22-2012 06:31 AM
Thanks for your reply.
The reason why I was running the batteries to 0% is because I was re-conditioning the batteries.
In short, running to 0% till till system shutdown was intended.
IMO, the issue is the BIOS shouldn't loop the power up POST if it failed to POST due to insufficient power.
This should be a BIOS fix if I'm not mistaken, not a PM fix.