The WORX 20-Volt Max lithium battery fits the: WG151, 154, 155, 156, 157, 160, 163, 251, 255, 320, 321, 322, 323, 540, 545, 546, 629, 778, 890, 891, 918, 919, 920, 921, 951 Series.
Features:
- Powerful 2.0 Ah battery charges quickly to run your 20V/18V tool
- MaxLithium technology means more efficiency and no memory effect
- Lightweight to help keep your work fatigue-free