Product features:
Brand new and high quality
Portable and durable, lightweight, easy to carry
Battery power bakeup pack for Xbox one slim controller
With USB charge port design, it is convenient to charge Xbox one slim controller
Air drying if water comes into the product, do not expose it under strong sunlight

Specification:
Input Voltage: DC 5V

Charge current: 250mA

Battery Pack: 400mAh NI-MH battery
Battery Pack Voltage: 2.4V
Material: ABS
Color: White
Dimension: 85 x 31 x 17mm

Package included:
1 x USB Battery Charger
2 x Rechargeable Battery