Highest Li-ion battery capacity without increasing size over the 4.2Ah.
Individual monitoring of battery cell voltage – each 3.6V segment is monitored by a sensor to ensure optimal discharge control.
Over-discharge Prevention Sensor – a sensor works to prevent over-discharging.
Battery Overheat Protecting Sensor – a temperature sensor cuts off power to the motor before the battery temperature rises to a harmful level.
3 Years Warranty on all Panasonic Power Tools including Batteries & Chargers when registered.
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