Battery type: Li-ion; Capacity: 2200mAh Voltage: 14.8V;Cells: 4-cell. The battery is durable and has overcurrent protection, anti-overcharge, anti-overdischarge and temperature control functions. COMPATIBLE ASUS PART NUMBERS & MODELS: 0B110-00250000 0B110-00250100 0B110-00250100M 0B110-00250600 A31LJ91 A31N1319 A41 A41N1308 CKSE14122 D550 X451 X451C X451CA X45Li9C X45li9c X551 X551C X551CA X551CA-0051A2117U X551CA-DH21 X551CA-SX024H X551CA-SX029H X551MA Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability. Compatible Models: X551M D550CA-RS31 F451CA F551CA-SX080H F551MA-SX033D X451CA-VX091D X451CA-VX106H X451MA-VX085H X551CA-SX043D X551MA-BING-SX950B X551MAV-SX300D Warranty & Support: Full refund in 30 days, 12 months warranty. If any issues about the product within 365 days, click the button "ASK A QUESTION" and CONTACT US, we will respond within 24 ho