- Provides up to 3 Hours Recording
- 3.7V Average; 1050 mAh Capacity
- Charges in 2 Hours 15 Minutes on AC
- Charges in 3 Hours on USB
The BT-02 1050 mAh Rechargeable Battery for Zoom Q4 from Zoom is estimated to power the camcorder while recording 720p30 video for up to three hours. It features a capacity of 1050 mAh, and delivers an average current of 3.7V DC. When charging from the ZOOM AD-17 AC adapter it can fully charge in about two hours fifteen minutes, and from USB in about three hours.