Buy A Dremel 7700 Battery Charger 230V, EU 2 610 007 206 Spare Part Tye: F 013 770 045
Hanaix 7.2 Volt 3500mAh Ni-MH Battery Compatible with Dremel 7700-01 and Dremel 7700-02 Replacement Dremel 757-01 (Do not fit Dremel 770 Type 1) : Tools & Home Improvement
Powerextra 7.2 Volt 2000mAh Battery Compatible with Dremel MultiPro Cordless Rotary Tool Models Dremel 7700-01 and Dremel 7700-02 Replace for Dremel 757-01(Do not fit Dremel 770 Type 1, 770T2, 7300) - - Amazon.com
Dremel 7700 Series 7.2-Volt NiCad Dual Speed Cordless Multi-Pro Rotary Tool Kit with 15 Accessories and 1 Attachment 7700-1/15