Environmental-friendly: Innocuous to the environment. All 5 pieces lithium-ion batteries in the battery pack accord with the certification requirements of CE/GS/EMC/PAHS/ROHS.
Type of Battery: Lithium-ion. Voltage: 20V. This battery pack contains 10 pieces 3.7V 18650-4000mAh Lithium-ion batteries. Only weighs 1.6 lbs.
Much Safer: Safeguard features against incorrect voltage, battery overload, short circuits, and internal overheating. No memory effect, can be charged freely.
Power Indicator: 4 indicator lights on the Battery Pack for recognizing battery charge status immediately.
Compatible with WORKPRO 20V: Fully compatible with the latest series of WORKPRO 20V cordless power tools, including the drill, impact driver, impact wrench, angle grinder, reciprocating saw, grass trimmer, and hedge trimmer. (Compatible with models W122046AE, W004581AE, W122035A, W004572A, W125042A, W125051A, W125050A, W159006A, W159008A, and others)