SpecificationsModel: 266J9 // Battery type: Li-ion // Color: Black // Voltage: 11.4V // Capacity: 51Wh/4255mAh // 100% New from Manufacturer. Top circuit boards and smart chip Compatible Part NumberFit for 266J9 / 0415CG / C9VNH 0PN1VN / 0M4GWP / MV07R Compatible with Laptop ModelsFit for Dell G3 15 3500 3590 3790 Series; Fit for Dell G5 15 5500 Series; Fit for Dell G5 SE 5500 Series After ServiceReturn and exchange are permitted within 30 days, accompanied by a 12-month warranty. (NOTE: If you encounter any issues with the battery, please reach out to usunder "YOUR ORDER," select the "contact seller" option.) Gentle ReminderIf the new battery is not recognized during the initial installation, please reinstall and check if the interface is fully connected. Discharge the new battery to 10% (not 0%), then charge and cycle 3-4 times to wake up the new battery Safety FeaturesPlease refer to the instructions before you installing the battery. All EFOHANA