Battery type: Li-ion; Capacity: 5200mAh/58Wh Voltage: 11.1V; Cells: 6-cell. Compatible part numbers: VGP-BPS9/S VGP-BPL9 VGP-BPS9A/B VGP-BPS10 VGP-BPS9B VGP-BPS9/B PCG-8W1M BPS9A3 Compatible Models Sony Vaio PCG-5J1L,PCG-5J2L,PCG-5K1L,PCG-5K2L,PCG-5G1L,PCG-5G2L,PCG-5G3L,PCG-6S2L,PCG-6W1L,PCG-6W2L,PCG-6W3L,PCG-7131L,PCG-7132L,PCG-7133L,PCG-7111L,PCG-7112L,PCG-7113L,PCG-7Z1L,PCG-7Z2L PCG-8Z1L,PCG-8Z2L Security & Reliability: Our batteries are assembled from top quality material and circuit boards to ensure fast charges and low power consumption, 100% New from Manufacturer, Overcharge and Overdischarge Circuit Protection, Over-temperature and Short-circuit Protection, up to 500 recharge cycles over the life of the battery, meet OEM standard. You can buy it with confidence and use it safely. 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 wi