Sony NP-FV100A Accu

Longest lasting battery for the Sony AX53 that you can buy, although the price does seem steep. However, plenty of shooting time with this battery.

Good Points: Genuine Sony part, so should work perfectly with Sony camcorders. Improvement Points: Expensive, but did not want to risk third party batteries as I know these can be hit or miss.

Great value, I never run into the problem of a dying battery, this thing works for weeks before I need to recharge my battery .