nmc battery, thornton. new. capacity 17.5ag. number of cycles from 1500 (declared by the manufacturer according to the datasheet) charge voltage 3.7v discharge voltage 2.8v charge 0.5s-8.5a nominally maximum long-term current-2s (35a) -checked, heating slightly warmer than body temperature. internal resistance 2.1-2.2mOhm weight 350gram