Replace: Worx WA3551.1 Fit for: Worx WG169 / WG169E / WG259 / WG259E.9 / WG549 / WG549E.5 / WG549E.9 / WX166 / WX166.31 / WX372 / WX390 / WX390.1 / WX390.31 / WX523 / WX523.9 / WX678 / WX678.9; Rockwell RK1806K2, RK2853K2, RK2859, RK2868K2 Type: Li-ion Cell Voltage: 20V Capacity: 6000mAh Weight: 559g FCC, CE and RoHS certified, 100% compatible with the originals and may exceed the performance of OEM Note: It's recommended that the battery should be fully charged and discharged 3 times after you receive the battery. For transport safety, our batteries are not fully charged before leave the factory. After use, please charge the battery after cooling. Package Includes: 2x Battery.
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