Shentec shentec 3.0ah 10.8v battery compatible with dremel 855-02 855-01, compatible with dremel 8000-01 8001-01 8001-02 cordless too
Dremel Rechargeable Battery Pack 12V
Synergy Digital Power Tool Battery, Works with Dremel B812-02 Power Tool, (Li-Ion, 10.8V, 1500 mAh) Ultra High Capacity, Compatible with Dremel B812-01 Battery - Walmart.com