Specifications: Battery Type: Li-ion; Voltage: 11.55V; Capacity: 60.9Wh; Battery life: Up to 500 recharge cycles over the life of the battery Compatible Part Number: HSTNN-DB8X L29913-221 L29913-2C1 L29959-002 L29959-005 SY03060XL SY03XL Compatible Models: Replacement for HP Chromebook x360 14 G1 Series,HP Chromebook x360 14-DA Series: 14-DA0011DX 14-DA0012DX 14-DA0021NR 14-da0000TU 14-da0001TU 14-da0002TU 14-da0003TU 14-da0004TU 14-da0005TU 14-da0006TU 14-da0007TU 14-da0008TU 14-da0009TU, HP Chromebook 15-DE Series: 15-DE0010NR 15-DE0015NR 15-DE0021CL 15-DE0035CL 15-DE0042NR 15-DE0045CL 15-DE0055CL 15-DE0517WM 15-DE0518WM 15-DE0523DX 15-DE0577WM 15T-DE000 Series Security: All ZTHY products are Certified by CE, UL for safety. Strict guidelines for compatibility, and standards compliance for environment safety Note: 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