Hello,
You can use the Gemini Battery pack. It has the same connectors and is covered by one year warranty once it is used with Gemini charger. The cells we are using come from CBAK and are UL listed.
http://gemini-lights.com/products/battery
On behalf of teh Gemini Team
Vag
Last edited by Gemini Lights; 12-22-10 at 01:59 AM.