Specifications: Voltage: 10.8V Capacity: 4,400mAh/48Wh Color: black Dimensions: 271.3 x 53.2 x 20.2mm Net weight: 320g Type: Li-ion Compatible original battery codes: 31CR19/652, AS10D31, AS10D3E, AS10D41, AS10D51, AS10D61, AS10D71, AS10G3E, BT.00603.111, BT.00606.008, BT.00607.125, BT.00607.127, 31CR19/65-2, AK.006BT.075, AS10D73, BT.00603.117, BT.00605.062, BT.00607.130, AK.006BT.080, AS10D75, BT.00603.124, BT.00605.065, BT.00607.126, LC.BTP00.123, BT.00604.049 Compatible laptop models: Acer Aspire 4251, 4252, 4253, 4253G, 4333, 4551, 4551G, 4551G-P322G32Mn, 4552, 4552-5078, 4552G, 4625, 4733Z, 4738, 4738G, 4738Z, 4738ZG, 4741, 4741G, 4741G-332G32Mnsk, 4741G-332G50Mn, 4741G-372G50Mnkk02, 4741G-372G50Mnkk06, 4741G-432G50Mnkk01, 4741G-5452G50Mnkk04, 4741G-5462G50Mnkk05, 4741G-5464G50Mn, 4741Z, 4741ZG, 4741ZG-P602G50Mnkkc, 4741ZG-P622G50Mnkk03, 4743G, 4750, 4750G, 4755, 4771, 4771G, 5250, 5251, 5251-1005, 5251-1549, 5252, 5253, 5253G, 5333, 5336, 5551, 5551-2013, 5551-2036, 5551-2805, 5551-4200, 5551-4937, 5551G, 5551G-4280, 5551G-4591, 5551G-P324G32Mn, 5551-P323G32Mnsk, 5552, 5552G, 5560 V3, 5560G, 5733, 5733Z, 5736Z, 5741 this is grace from shenzhen cabellpower , factory for laptop battery ,laptop adapter, power bank.we produce the laptop battery, laptop adapter, power bank.also we deal with the laptop accessory: such as laptop keyboard, laptop hinge ,laptop cover, laptop lcd led cable, laptop cpu fan.laptop dc jack....etc.we have many models laptop battery,laptop adapter，power banks，you can check if any models you like, if any questions feel free to contact me by skype:eros1025 or QQ:330184064