jeremy ardley <jeremy.ardley@gmail.com> writes: > In my experience, just about any aftermarket laptop battery you buy > off ebay or Amazon will have significantly lower capacity than > advertised. Aftermarket batteries can also be physically bad, i.e. not fitting properly. One reason why I finally retired my old Thinkpad X201, I got a replacement battery which could work itself loose and then power would just disappear. Really annoying.