Ultrabay battery charge rate tapers off

I picked up a "new" lenovo ultrabay battery for my T61. The battery information shows the last charge was a bit above the design charge so the report says it's in excellent condition. However, it was at 0% charge when I first put it in and as time goes on the charge rate is dropping and the time to complete charge is increasing, not decreasing. It's up to 82% now but it says it has almost 4 hours left to charge. Originally it said it would only take 1.5 hours to completely charge.
This seems to me like it was over discharged. I read a lenovo recommendation to allow an over discharged battery to charge for 24hours and fully cycle it up to twice more to see if it can be recovered. Is this safe? The temperature sensors are staying right around 29C.
Is it possible to reflash the battery last charge number to make it appear to be in good condition? I could see some sneaky reseller picking up batteries in fair condition and making them appear to be in good condition.
Thanks!

don't think that would be possible.
Regards,
Jin Li
May this year, be the year of 'DO'!
I am a volunteer, and not a paid staff of Lenovo or Microsoft

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Ultrabay battery charge rate tapers off

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