My Sony DCR-SR220E camera can't be charged.

Rub the metal contact between the charger and the battery with rubber. If this is still the case, it means that the battery circuit board is broken. After all, the charger circuit board may be much less broken than the battery. Generally speaking, the battery circuit board is broken, so just replace it with a new one. Two years ago, the machine estimated that the price of new batteries also fell. If you think it is expensive, you can buy the product. As long as you have the battery of your camera model, things are still good and cost-effective. Also, the lithium battery should be fully charged in time after use. If you don't flush after using it, the power will be completely gone, just like you. Wrap the newspaper and put it in the refrigerator for 3 days, then take it out and warm it back and forth. It may be activated again.