Buy A Dremel 7700 Battery Charger USA 120/7,2V, 3h 2 615 000 758 Spare Part Tye: F 013 770 001
Synergy Digital Power Tool Battery, Compatible with Dremel MultiPro 7700-02 Power Tool, (Ni-MH, 7.2V, 2000mAh) Ultra High Capacity, Replacement for Dremel 757-01 Battery - Walmart.com
Amazon.com : Upgraded Powerextra 2 Pack 7.2 Volt 2000mah Battery Compatible with Dremel MultiPro Cordless Rotary Tool Models Dremel 7700-01 and Dremel 7700-02 Replacement Dremel 757-01 Dremel 7.2 volt Battery : Tools & Home Improvement
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