The Greenworks 24V lithium-ion platform powers over 75 indoor and outdoor products, including lawn mowers, blowers, string trimmers, chainsaws, power tools, and more! The 24V lithium-ion battery provides 20% more power and 35% more run-time, and delivers fade-free power with no memory loss after charging. The outdoor power equipment allows you to tackle up to 1/4 acre with the available 1.5Ah, 2Ah, 4Ah, and 5Ah batteries. USB ports are integrated into the BAG711, BAG708, BAG709, BAG710 batteries, making it a portable charger for phones, tablets, and other compatible electronic accessories. The Greenworks 24V platform comes with a 3 year tool / battery warranty to protect your investment | Greenworks | | 12 in. 24-Volt Cordless Brushless Chainsaw (4Ah USB Battery and Charger Included | Green | Best Buy