A USB charger will only charge a battery and will not charge a pack.
- Plug your USB charger into a USB port on your computer or other USB-enabled device.
- Screw your battery directly into the opposite end of the charger. The light on the charger will remain red until it has fully charged, and then will indicate that it is ready by turning blue.
We do not recommend leaving your battery in the USB charger for longer than 24 hours at a time.