Battery delivers 2.5AH of runtime at 36 V in MultiVolt tools Battery can also power Hitachi or Metabo HPT 18 V slide-type tools, including cordless nailers, generating 5.0 AH of runtime Higher capacity battery cell technology with 18650 cells that deliver over 1.080 W of power 4-stage fuel gauge located on the face of the battery to make it easier to monitor the charge status Compact and lightweight, weighs only 1.5 lb Multiplex protection circuit in the battery communicates with the tool and charger preventing from overload, overcharge and over-discharge Metabo HPT MultiVolt 36 V/18 V, 2.5 AH/ 5.0 AH Lithium Power Tool Battery