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.Type: Plug & Play Rechargeable Li-ion Battery .Model: 44T2R .Voltage: 15.2V .Capatity: 68Wh 4410mAh .Interface: Refer to the picture! Please check it! .Color: Black .Warranty: 1 year warranty , 30 days' money back guarantee ! .Replace Battery Part Number: 44T2R 0HF250 HF250 546FF .Compatible with: (use "ctrl+F" to find out your model quickly) Fit for Dell Alienware 15 R3 17 R4 R5 Series .Package included: 1X 44T2R Laptop Battery. .Note: 1.Before placing your order, we highly suggest you to open the back case of your latptop and check out the exact part number of your laptop's original battery. 2.Discharge the new battery use to 5%(not to 0%) and then charge to 95%, and cycle 3-4 times. 3.Do not disassemble, crush or puncture. Do not dispose of in fire or water. 4.If you remove battery for a long time, charge more than 80% at least one time within one months. 5.Don't connect adapter for a long time while using the battery. It may damage the battery. 6.When using the battery, care should be taken to prevent exposure and moisture.