Replacement battery fits 6 Dymosen compatible models. Specifications: 2600 mAh, 14.8V, Li-ion. Compatible with: C1, D1, Elfbot T2, Elfbot C1, Elfbot D1, Elfbot M160. Replaces: Elfbot FD-CDM-A-L14.4. Dymosen replacement battery designed for Vacuum devices. A direct drop-in replacement for the original battery.