Original manufacturer BYD and power battery provide higher quality, longer life time and safer use experience. 14.4v 2600 mAh rechargeable lithium Ion battery for Ecovacs Deebot N79, N79S, 500, DN622 vacuum cleaners. And compatible with Eufy RoboVac 11S, 11S MAX, 15T, 30, 30C MAX, 15C, 15C MAX, 12, 25C, 35C. Reliable safety protection functions for short circuit, over voltage, overheat and over-current. Perfect Battery Management System with high-end BM3451 protection IC can support max. 8 Amperes discharge for stronger suction. Committed 7/24 response to online message. 1 year limited warranty.