Amazon.com: Hanaix 7.2 Volt 3500mAh Battery Compatible with Dremel 7700-01 and Dremel 7700-02 Replacement Dremel 757-01 Dremel 7.2 Volt Battery (Do not fit Dremel 770 Type 1) : Tools & Home Improvement
Powerextra 2-Pack 4.8V 3000mAh Replacement Battery for Dremel 7300 755- 01 MiniMite Dremel Power Tools Batteries - Walmart.com
Dremel 8000-01 8001-01 Replacement Battery: BatteryClerk.com Power Tool
Shentec shentec 12v battery compatible with dremel b812-02 b812-03, works with dremel 8200 8220 8300 12v rotary oscillating power too
Dremel 12V Max Battery Replacement
Amazon.com: Hanaix 7.2 Volt 3500mAh Battery Compatible with Dremel 7700-01 and Dremel 7700-02 Replacement Dremel 757-01 Dremel 7.2 Volt Battery (Do not fit Dremel 770 Type 1) : Tools & Home Improvement