Type: Lithium/13 strings/48V. Wiring mode: same port / split port Discharge:Over-discharge protection voltage: 2.7V±0.05V Overdischarge recovery voltage: 3.0V±0.05V. Continuous working current: 4MOS=15A, 6MOS=20A. Instantaneous protection current: 4MOS=65A, 6MOS=80A Over-current recovery conditions: charge recovery / disconnect load. Short-circuit recovery conditions: charge recovery / disconnect load Charge Overcharge protection voltage: 4.25V±0.015V Overcharge recovery voltage: 4.15V±0.015V Continuous charging current: 4MOS=15A, 6MOS=20A Charger voltage: 56V (recommended) Same port activation Two ways to activate PACK for the first time: (1) B- and C- wires can be short-circuited once (2) Or recharge to activate Split port activation Two activation methods for the (-) B- and P- wires are short-circuited once (2) Or charge to activate Over temperature protection Charging over temperature -5℃ to 50℃ (default shipping without temperature control) Discharge over temperature -30℃ to 70C (default shipping without temperature control) Working power consumption: less than equal40uA Main circuit conduction internal resistance: 15mohm Temperature range: -40 to +80°C Disconnection protection: Yes Product appearance size: 63x34x7mm Colour:As shown Material:PC+Metal Package Contents: 2 x Protection board(20A) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.