There are many affordable universal battery charger units for sale that recharge Sony battery packs as well as other brands like Panasonic. The Ambico battery charger featured here is cheap and portable. It can charge different models of the popular Sony NP line of batteries like the Sony NP-F550 in the video.

1. Ambico V 0916 Manual Instructions
2. Ambico V 0916 Manual Transmission

Ambico V 0916 Manual Instructions

Ambico V 0916 Manual Transmission

It's smart charge technology won't overcharge the battery and let you know when it's done with the simple blinking green light which flashes when charging and solid when done.