I don't put in new batteries, I use the pack that came with the video camera.
This Site Might Help You. RE: How do you charge a Flip Ultra HD video camera? I don't put in new batteries, I use the pack that came with the video camera.
Flip Ultrahd Video Camera
After you insert the battery pack, plug the Flip into your USB port on your computer (computer must be on). The light indicates it's charging. When light if off, it's done. Takes about 7 hours if battery is completely dead. If you use the optional Power Adapter, it takes about 3 hours.
