General description High-quality, compatible battery with long-lasting cells for use in your power tools. This battery is ideal as a second battery and fulfills all operational safety guidelines. EXTENSILO offers high-performance accessories. Technical specifications Weight: 352 g Battery type: Li-Ion No memory effect Capacity: 2500 mAh Voltage: 18 V Energy: 45 Wh Colour: black Number of cells: 5 Compatibility and accessories Compatible with Worx WX166.4, WX166.9, WX166.31, WX170, WX166, WX166.3, WX167 Replacement for WA3511, WA3512, WA3512.1, WA3516, WA3520, WA3523, WA3525, WA3575, WA3578, RW9351.1, WA3528, WA3551.1, WA3549.1, WA3572, WA3553.2 Usage Our high-performance, long-lasting replacement batteries have been developed for maximum operating time.