High Capacity: The 18V/36V 6000mAh actual capacity and top A grade Lithium battery cells delivers up to 2X run-time than standard (Hitachi)Metabo HPT battery
Voltage:18V
all of these lengthen battery life
Makita VR Series
For Worx 20V 3.8Ah Li-ion Replacement Battery 4Pack WA3551 WA3551.1 WA3553 WA3553.2 WA3641 WG629E For Ryobi 18V High Capacity: The 18V/36V 6000mAhBattery Specifications: Capacity: 3800mAh Battery Voltage: 20V Battery Type: Lithium ion Color: Black and Green Replacement PN : WA3551, WA3572, WA3553, WX390, WX176, WX178, WU268, WX166. 4, WX372. 1, WX800, WX802, WX678, WX550, WX523, WU531. 9, WG894E, WG629E, WG329E, WG259E, WG169E, WG026. 9, WG894E. 9, WG546E. 9, WG546E. 9, WG546E Compatible with: WORX WX386 WORX WX386. 9 WORX WX550. 1 WORX WX550. 9 WORX WX384. 1 WORX WX166. 3 WORX WX176 WORX