Specification - 6.0 Ah Higher Capacity, Voltage:20V, Battery Type:Li-ion, 2-pack. This tool Battery has no memory effect, no content of toxic and harmful substances, high current charge-discharge capability, great energy density and long cycle life. Perfect Compatibility: 6.0Ah 20V Battery Replacement for Worx 20V Lithium battery WA3520 WA3512 WA3525 WG151.5 WG151s WG155 WG155.5 WG545 WG155 WG255 WG151 ; Compatible with Worx batteries WG163 WG160.4 WG170 WG160.3 WG160.2 WG160 WG160.1 WG166.1 WG166 WG165. Smart Charging Protection - The 40V battery for Dewalt equipped with premium lithium battery cell. Built-in multiple circuit protection(over-charging, short-circuit, over-heated, and over current protection) LED Power indicator - The built-in battery indicator shows the remaining power, reduces downtime, and the shock resistant housing and shock lining are designed to protect the battery Service and Warrenty - The battery enjoys 30 days money back and 12 months quality warranty. Any questions about the item, please feel free to contact us via 2 Pack 20V 6.0Ah WA3520 Battery Replacement for Worx 20V Battery Compatible with Worx WG151 WA3575 WA3512 WA3578 WG151s WA3525 WG155 WA3520