· Greenworks 24V 4Ah (96Wh Max) lithium-ion battery delivers fade-free power with no memory loss after charging· On-board battery fuel indicator allows for on-demand reference of remaining power· USB port in battery charges all portable electronic devices, including phones and tablets. USB Battery Portable Power Station (24000 mAh Power Bank)· 3-year battery warranty protects your investment· Genuine Greenworks Battery/ 125+ Compatible Tools