[Specifications] Model: XSBT420 // Battery type: Li-ion // Voltage: 14.4V // Capacity: 27.36Wh/1900mAh // 100% New from Manufacturer. Top circuit boards and smart chip [Compatible Part Number] Fit for WS640, WS640AE, WS640BL, WS642, WS642AE, WS642AEQBL, WS642AEQCP, WS642AEQGN, WS642AEQSL, WS642AEQPL, WV401, WV401BL, WV401PK, WV403BR, WV410BL, WV410GN, WV410PR, WV410TL [Compatible Models] Fit for XSBT420, XSBT420AS, XSBT420UK [After Service] Return and exchange are permitted within 30 days, accompanied by a 12-month warranty. (NOTE: If you encounter any issues with the battery, please reach out to us—under "YOUR ORDER," select the "contact seller" option.) [Gentle Reminder] If the new battery is not recognized during the initial installation, please reinstall and check if the interface is fully connected. Discharge the new battery to 10% (not 0%), then charge and cycle 3-4 times to wake up the new battery [Safety Features] Please refer to the instructions before you installing the battery. All EFOHANA products are Certified by CE for safety, strictly test ensure both safety and stability

Specification:

Type: XSBT420

Voltage: 14.4V

Capacity: 1900mAh/27.36Wh

Battery Condition: Brand New

Compatible Part Numbers:

Fit for WS640, WS640AE, WS640BL, WS642, WS642AE, WS642AEQBL, WS642AEQCP, WS642AEQGN, WS642AEQSL, WS642AEQPL, WV401, WV401BL, WV401PK, WV403BR, WV410BL, WV410GN, WV410PR, WV410TL

Compatible Machine Models:

Fit for XSBT420, XSBT420AS, XSBT420UK