Help! Poor battery condition

Hi, here I have a question with my battery which is now in "Poor" condition.
I bought my SL510 about 4 years ago. Several days ago I noticed its battery's capacity dropped to 7.89 Wh, which is almost only 10% of its design capacity.
After some researching, I found a lenovo utility named "Battery Firmware Update Tool". It finally worked and the capacity came back to 100%!
BUT! I made a big mistake after. Forget where I got the **bleep** suggestion to do a battery gauge reset after the updating.  I did it twice! And my poor battery is poor again, only 3.89 Wh now, and can not get better whatever I tried.
Anyone can help me here? Or just give me a confirmation that there is no way to rescue my battery and I'll give it up. But I don't think a simple "Gauge Reset" can kill a battery or shorten its life. If so, it should never be provided to the customer.
Thanks!

Thanks again. But it seems my bad English misled you. 
The 3 hours battery lasting time was after I updated the battery firmware. Right now it drops to less 20mins because of the "Gauge Reset".
Thanks anyway. I'll give it up.
hausman wrote:
zhangandi wrote:
By the way, how long usually it takes to do a "Gauge reset"? I ran it overnight, it was still running, I had to stop it myself. Is that the reason to damage the battery?
A battery gauge reset discharges the battery fully then recharges it. That process takes several hours. Do not use your ThinkPad during this process because that will make the gauge inaccurate.
Due to the chemistry in a Li-Ion battery it's possible that a full discharge could damage the battery. IIRC the documentation does warn against doing resets too many times. So if you're now getting 3 hours out of a charge on a 4 year old battery I'd just leave well enough alone and use the battery as is. 

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