SpecificationVoltage: 11.4V. Capacity: 57Wh/5000mAh. Battery Type: Li-Polymer. Condition: Brand new, from high quality materials, top circuit boards and smart chip. Replace Part NumberFit for U478388PV-3S1P U478388PV 478388PV-3S1P 3ICP5/83/88. Compatible Laptop ModelsFit for Gateway GWTN156-12Bl GWTN156-12BK GWTN156-12BL GWTN156-12RD GWTN156-12GR series Notebook. ANTIEE PromiseEach products has undergone rigorous testing to ensure the correct voltage, circuit protection, stable current, low self-discharge and CE / FCC / RoHS Certified for safety. About 500 recharge cycles over the life. ANTIEE After-salesWe support 12 months of warranty, 24 x 7 email support. As you begin to use the product, any questions you can contact with us via "Your Orders" tab in your account, we will respond within 24 hours.