The runtime limits have been pushed even further. HART’s 40-Volt 7.5Ah Battery gets 3X more runtime than the 40-Volt 2.5Ah battery, while delivering the same fade-free power and performance. So, you can power through any yard maintenance project you decide to take on. This makes it ideal for power tools with higher energy needs, such as 40-Volt cordless mowers, blowers, and more. And just like other HART 40-Volt Batteries, this 7.5Ah lithium-ion battery has a built-in, 4-bar fuel gauge to check the remaining battery charge. You’ll always know when it’d time to switch batteries. This battery is compatible with all HART 40-Volt cordless outdoor tools and 40-Volt chargers. With a limited 3-year warranty, you can see why there’s never been a better time to go cordless. Get ALL POWER, NO GAS™ with the HART 40-Volt 7.5Ah Battery. (Product sold as a single battery and does not include tool or charger.)