Track down an OEM Lenovo battery from whatever source you can find. Unfortunately, the aftermarket batteries I've tried all died rapidly, due to cells dying or

Track down an OEM Lenovo battery from whatever source you can find. Unfortunately, the aftermarket batteries I've tried all died rapidly, due to cells dying or going out of balance or whatever. Never had an aftermarket last longer than 6 months before it was down to a half hour or something pitiful. Finally sucked it up and bought an OEM battery and two years later it's still giving a couple hours of runtime.