Battery Bench that runs without intervention

I'm looking for a mobile battery benchmark that will run while I'm away from the laptop (read: asleep) and retain logs that I can get in the morning to see how it went. Does anyone have a recommendation?

I'm basically looking for something that I can set, go to bed, and then plug the laptop in and get the results from logs, etc.

A plus would be one that also runs under Linux. Not a necessity, but a nice-to-have.

 

Prime95, which loads the CPU and runs the battery down. Ghetto I know.

 

I'm not looking to kill it, otherwise I'd have straight used Orthos

I'm looking for something to utilize wifi (refresh pages, etc.) and stress it like a normal person. I know how to stress it like I do - I watch a movie and install a bunch of things simultaneously, and then play a U3E game . I did that part already.

I need a "normal surfing the web" type bench. I'm trying to give a realistic expectation of battery life out of my new ultra-portable.

 

Then get BatteryBar, install it and then use your machine as you normally would for a few days. It will track your daily use and give you realtime estimates of the amount of battery time left.

Nice little app.

Gary