How does battery charge work ThinkPad T430s

I recently bought a Lenovo ThinkPad T430s 2356-LRG and was wondering how the charge technology worked. I have searched around and looked in the manual but I couldn't find a good answer.

My questions is that I use the notebook alot on AC power. And often for extended periods of mid to heavy load. I run Linux and have setup ChargeThreshold. It stops charge at 95% and begins again at 45%.

But when I keep the AC power on, and if the battery has 80% it does not move up or down as expected. Because it must drop lower than 45%.

Will the power then go straight to the machine and bypass the battery? Because the Battery-LED on the back is turned off. Or will it go via the battery and produce charge cycles on the battery?

So let's say the battery is bypassed will it then be fine to keep it on AC and active for a period of many days with heavy load but monitor the temp of the battery. I know heat kills it.

I could also buy an 95W power adapter and remove the battery completely from the machine when I have it at my desk for an extended period of time.

 

Simple answer: The battery only charges when the charge level drops blow the lower limit; in your case 45%. It's OK to keep your machine plugged in.

I think the recommended charge thresholds for machines kept plugged in are 30% and 70%.

 

Okey thanks. So it will just bypass the battery when it is fully charged?

 

Not only when the battery is fully charged.

On your machine, if the battery has more than 45% capacity it will not charge. When the charge level drops below 45% the battery will charge to 95% and stop. It should never charge above 95%.