BMS, Battery Management System, protects against over/under charging/ discharging. 

Premium Air Cooling System enables fast charging and longer runtime per charge and longer lifetime

Battery capacity indicator shows the level of the remaining power

Stability and vibration resistance thanks to the design and rubberrized protection

Compatible with all Kress 20V Max Products

Charging time:58min with 2A charger and 22min with 6A charger