S Cells 4.2V 20A Balancing Li-ion Lithium 18650 Battery Protection Board Lithium Battery Protection Board: Size (L*W*H): 90 x 46 x 8 mm Equilibrium current: 80 m A (VCELL=4.20V) Supported battery type: 7 cells 4.2V Lithium ion battery Balancing the locus of control: 4.180.03 V Overcharge threshold: 4.30.05 V Overcharge time delay: 75m S Overcharge release: 4.10.05 V Discharge threshold: 2.40.08 V Discharge delay: 5m S Working current: 20 A Over current threshold: 30 A Static power: 0-500u A Overcharge protection function: Yes Discharge protection function: Yes Over current protection function: Yes Balanced protection function: Yes Over-current release: Disconnect the load release Short circuit protection function: Yes. (Disconnect the load can be recovery) Feature: This Lithium ion battery protection PCB protect single Lithium ion batteries.20A continuous current. Suitable for electric drills, motors, or aircraft models which require heavy current load. Note: Manual measuring, please allow 1 ~ 3 cm error. Package included: 1 x Protection Board 1 x Cable