3S 20A 18650 Lithium Battery BMS

What is 3S BMS? A 3S (3 Series) 20A BMS is designed for three 18650 lithium cells connected 3S 20A BMS board in series. Each cell has a nominal voltage of 3.7V, so a 3S pack provides: 11.1V nominal voltage12.6V fully charged voltageThe BMS protects t...