24V 4.0Ah 21700 Battery with Bi-Directional USB-C Port

【GREENWORKS 24V LITHIUM-ION BATTERY】Delivers more fade-free power with no memory loss after charging. 【NOT ONLY BATTERY, BUT ALSO POWER BANK】With Bi-Directional USB-C Port for charging iPhone Series, iPad, Galaxy, Pixel, and More. 【LED BATTERY FUEL INDICATOR】Integrated LED fuel indicator provides immediate feedback on state of the battery. 【MULTI-PROTECTION TECH】Built in battery management system (BMS) ensures complete protection for your devices. 【ONE BATTERY POWER ALL】Greenworks 24V batteries are compatible with 200+ Greenworks tools in the same voltage for total freedom of movement when gardening without tangled cables.