Expand your 40V collection with this powerful and compact 4.0Ah 40V Battery. This powerful battery features Lithium-Ion technology to give you long-lasting and fade-free power you need to tackle any project that comes your way. Also, the On-Board Fuel Gauge allows you to quickly check the charge at any moment. The 4.0Ah 40V Battery has a slim design that lends itself to a more comfortable experience by reducing fatigue. This 4.0Ah battery is compatible with all 40V outdoor tools. You will never run out of runtime while having this additional Battery on hand! Get ALL POWER, NO GAS with the 4.0Ah Battery. This battery is sold as a single battery and does not include a charger or a tool. Model: HLBP021A Works with all 40V tools More power and longer life with zero “memory” effect sets this Lithium-Ion battery apart from Ni-Cad competitors Higher capacity battery provides better runtime and power for more demanding tools like mowers, chainsaws, and blowers Model: HLBP021A Includes: 40V 4.0Ah Battery and Operator Manual