Hitachi BSL1820 18V Li-ion Slide 2.0Ah Battery

BSL1820 Features: Light weight and compact allowing for lighter and more compact tools, reducing user fatigue and discomfort All Hitachi Lithium Ion Batteries feature multiple protection circuit that protects the battery & tool from overload, over heat, over discharge & over charge. The MPC prevents damage and extends battery and tool life through the following: The battery MPC monitors voltage of EACH cell The MPC immediately detects any abnormality, even in one cell-Upon detecting an abnormality, the circuit is instantly broken and operation is stopped