Wii Batteries 1. This product into after does not affect Wii balance board related operations and other products of access. 2. Easy to change the Wii battery pack lets handle balance board use up more relaxed. 3. The product can be used repeatedly charging around 500 times, without often change batteries brings trouble. 4. Charging adopts USB socket charging, more convenient. 5. Wii balance board lithium battery pack into the shell material, completely won't affect the use of the products. 6. Super capacity, can increase Wii balance board negroponte ability. 7. Charging form: The constant-voltage + constant-current + Juan flow mode, full automatic filling after turn off the power and won't appear overcharge phenomenon. 8. Charging current: 500MA 9. Recharging voltage: 5V 10. Battery capacity: Seven to 1800mA/H can choose. 11. Recharge time: 700mA/H 1.5 hours. 1000mA/H 2.2 hour. 1200 mA/H 3 hours. 1800 mA/H 4 hours. (depending on the Wii balance board lithium battery packs cell remaining power and decide).