Excellent technology, stable heat dissipation. Over-voltage protection, over-discharge protection. Integrated solution, charging protection. Short-circuit protection, over-current protection. Made of high quality material, . Type: ternary/4 strings/14.8V Wiring method: same port Single battery over-discharge voltage: 2.40V±0.01V Single battery over-discharge recovery voltage: 3.0V±0.075V Over-discharge delay: 60mS Short circuit protection delay: 600us Continuous working current: 40A (20 seconds) Instantaneous protection current: 100A (can start electric drill) Over-current recovery conditions: charging recovery or disconnecting the load Short circuit recovery conditions: charging recovery or disconnecting the load Single battery overcharge voltage: 4.28V±0.05V Single battery overcharge recovery voltage: 4.08V±0.05V Overcharge delay: 150mS 20A version continuous charging current: 25A Charger voltage: 16.8V (recommended) Balanced voltage: 4.2V±0.015V Balance current: 42MA Material: PCB colour: Green Package Contents: 1 x Battery Protection Board 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.