ASUS f3jp battery

Hello, I am looking at rebuilding the battery for my ASUS f3jp. It is a 2 1/2 year old computer and the battery is no longer very good, as it gets about 30-45 min of charge with all power settings set as low as possible and aero/glass off.

A new standard 6-cell battery from the ASUS e-store is $110 and 170 for a 9 cell. I would like to not spend that much on a battery, so I am going to just replace the li-ion cells in my current battery.

My question is the battery's internal circuitry. Will I actually gain longer battery life If i use higher than standard capacity batteries or will the circuitry stop at 4400 mAh? If I recalibrate the battery will it fix this?

Looking around the internet, most articles/forums/links to battery rebuilds are fairly old and don't really have to much to them.

And does anyone have any suggestions for a good battery source? Or any recommended brands.

I will probably use an old thinkpad with a shot battery to test this with.

 

Have you tried calibrating your battery? If you haven't do this.. Drain it right till your comp shuts down.. then take it out and let it cool for an hour..than recharge it.. i had batterybar which told me battery drain and it showed that my battery went back to almost normal and lasts way longer now.. if this doesn't work , time for new battery..

 

I have tried to recalibrate my battery a couple of times actually. Once through my bios' calibration tool and once through just letting windows die. When I kill all unnecessary services and programs my battery gauge estimates 70 min of battery life, but when It gets down to 55%, about 30 minutes later it just dies, no low battery warning or anything.

I have no fears at all about building a working battery, as I have built several battery packs in the past for various devices.

And actually while at work today I had a great idea. Instead of worrying about whether or not the battery's circuitry will allow me to expand past stock capacity, I will just rebuild it so that I can swap battery cells. So it is a battery for a battery, sort of. Unless the battery's mainboard remembers how much charge was left last time it was used, but if that happens I will just figure out a way to clear that memory, maybe with a momentary swith or something.