From EMAIL:
Try it out and the battery shop will close soon. If the life of your mobile phone's battery is shortening due to "memory effect" / aging, would you go an buy a new battery to replace it? Next time when you encounter this situation, try saving your money.
Can try and see:
1. Wrap the battery up with newspapers, put it into a plastic bag and then into the freezer for 3 days (the newspapers will absorb the accessive moisture).
2. After 3 days, take out the battery and leave it in normal temperature for 2 days.
3. After 2 days, fully charge up the battery and put it into your mobile phone and see (this is estimated to be able to salvage about 80%-90%)
This information was provided by an engineer in a well-known battery factory.