Specifications:Condition: Brand New , 'A' grade cells,100% Compatible!Battery type: Li-ion BatteryVoltage:14.8VCapacity:40WHNumber of Battery Cells:4Certification: CE FCC RoHSColor: black as picturesOperation time: approx 1.5-3 hoursPackage including: battery (in packing carton box) Compatible Model:For Dell Inspiron 3451 3452 3458 3551 3552 3558 5451 5458 5555 5558 5755 5758For Dell Inspiron 14 3000 series 14-3451 14-3458For Dell Inspiron 14 5000 series 14-5451 14-5455 14-5458 14-5459For Dell Inspiron 15 3000 series 15-3552 15-3558For Dell Inspiron 15 5000 series 15-5555 15-5558 15-5559 15-5758For Dell Vostro 3458 3558 Compatible Part Numbers:For Dell Inspiron Gxvj3, Hd4J0, Hd4Jo, K185W, Ki85W, m5y1w, Wkrj2, VN3N0, 451-BBMG Note: Please check carefully about your laptop model name/battery part number/battery shape and size to make sure you purchase the correct battery. How to confirm that the battery is suitable for your laptop?Method 1: Use System Information to find your laptop modelStep 1: Press Windows + R to open Run window. Step 2: Input "msinfo32" in the empty box and click OK to open System Information. Step 3: Keep in the System Summary section, and you will find the System Model item in the right pane. Method 2: Remove Battery from Laptop to find your laptop battery part numberStep 1: Switch off the laptop and unplug the power cable in case of electric shock Step 2: Remove the back panel with the screwdriver. You should to this with care avoiding any harm to the laptop components. Step 3: Disconnect the cable connected to the battery and then take out the battery. After that, you can check the specifications of your battery.