5S 10A Li-ion Lithium Battery 18650 Charger Protection Board 18.5V 21V Cell New 100% Brand New Voltage: 16.8v / 21.6v Over-discharge recovery voltage: 2.90v 0.08v Maximum operating current: 10A Operating temperature: -40 --- + 50 Maximum instantaneous current: 15A-20A Storage conditions: -40-- + 80 Static current: less than 20uA Effective life: more than 50,000 hours Resistance: less than 30m Short circuit protection: protect and automatic recovery balanced: No Size: 53mm * 18mm * 4mm Package Contents 1PCS 5S18.5V 21V 10A 18650 lithium battery protection board