Replacement battery fits 10 Ecovacs compatible models. Specifications: 2600mAh, 11.1V, Li-ion. Compatible with: Dora CR330, Dora CR331, Dora CR332, Dora CR333, Dora CEN330, Dora CEN331 and 4 more compatible models. Replaces: Ecovacs ICR18650 3S1P. Ecovacs replacement battery designed for Vacuum devices. Built to OEM specifications for reliable performance.