Type: Li-ion Cell Voltage: 18V/20V Capacity: 3500mAh Weight: 238g Replacement Part: Worx Landroid: 50032492, 50032774, WA3230, WA3231 Compatible Models: Worx Landroid S 390m2 Landroid S Basic Landroid S300 Landroid S300 2018 Landroid S300i Landroid S450i Landroid S450i 2018 Landroid S500i Landroid S500i 2018 Landroid S700i, Landroid S700i 2018, Worx WR100SI, WR101SI, WR102SI, WR103SI, WR104SI, WR105SI, WR105SI.1, WR106SI, WR110MI, WR110MI.1, WR115MI 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: 1x Battery.