DEWALT DCB609-B1 9.0Ah FLEXVOLT Li-Ion Battery Pack

The DEWALT DCB609 is a 9.0Ah FLEXVOLT lithium-ion battery pack for DEWALT cordless tools. It is meant for heavy, power-hungry jobs such as cutting with large circular and mitre saws, grinding, breaking and long run-time work on site. DEWALT states that FLEXVOLT batteries switch voltage automatically when you move them between tools. The pack has a maximum initial voltage of 20 V or 60 V, which is a nominal 18 V or 54 V, so it works in DEWALT 18 V (20V MAX) tools as well as 54 V (60V MAX) FLEXVOLT tools. Two 60V MAX packs together power DEWALT's 120V MAX tools. DEWALT says it runs cooler than the leading competitor's 9Ah battery and gives up to 6 times the run time of its 1.5Ah pack in 20V MAX tools. The box contains one DCB609 battery. Tip: charge it on a DEWALT charger rated for FLEXVOLT packs, and store it in a cool, dry place, partly charged, when not in use for a long time.