4S 20A Li-ion Lithium Battery Charger Protection Board 18650 BMS 14.8V Balance

4S 20A Standard:
Size: 34.5 * 34.5 * 1mm/1.35 * 1.35 * 0.03inch
Overcharge voltage range: 4.25-4.35V ± 0.05V
Overdischarge voltage range: 2.3-3.0V ± 0.05V
Upper limit working current: 10A
Working temperature: -40-+50 ℃
Upper limit instantaneous current: 20A
Quiescent current: less than 30uA
Internal resistance: less than 60m Ω
Short circuit protection: Protectable, requires charging and recovery
Charging voltage: 16.8V-17V