Synergy Digital Tablet Battery, Compatible with Dell WXR8J Tablet, (Li-Pol, 3.8V, 5100mAh) Ultra High Capacity, Replacement for Dell 0HH8J0, HH8J0, WXR8J Battery Specifications: Battery Chemstry: Li-Pol Voltage: 3.8V Capacity: 5100mAh Compatible with: Dell 0HH8J0, HH8J0, WXR8J Battery Works for: Dell WXR8J Tablet and many more