Dremel, 8000-01, 8001-01 Replacement Battery shipped from Canada
Hacking together a better dremel battery! - YouTube
Amazon.com: Synergy Digital Power Tool Battery, Works with Dremel 855-45 Power Tool, (Li-Ion, 10.8V, 2000 mAh) Ultra High Capacity Battery : Tools & Home Improvement
Shentec 10.8V Lithium Battery Charger Compatible with Dremel 855-02 855-01 8000-01 8001-01 8001-02 (Not for Ni-MH/Ni-Cd Battery) - - Amazon.com