Battery Type: Li-Polymer; Voltage: 10.8V for A1175 A1211 A1226 A1260 A1150 Sony Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability. Worry-free: 12-month warranty, 30 days' refund policy and friendly customer service The perfect 1:1 copy size as original battery, perfectly fit for your laptop. ABS shell have excellent heat resistance, wear-resistance and corrosion resistance. Ombar battery material: Lithium cobalt oxide material is stabler, safer and more efficient than low-cost lithium manganese oxide materials that often swell, don't last long or even explode due to overheating.