[Thinkpad] R40 battery and battery refills

I have a Thinkpad R40 which has about 2 1/2 years on the original battery
which is showing signs of death. I have seen references to
www.batteryrefill.com on this list in the past, does anyone have first hand
experience with them? My battery would be the guinea pig, before risking my
wife's T-23 battery which she uses extensively for her consulting business
and cannot be without. Thanks for any advice.

BTW - I have not found a source for reputable remanufactured batteries if
someone has a source for those please reply as well.

--
Steve Finkelstein
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