Artwizz Extra Battery Pack

Extra Battery Pack, 4.5-5.3V, 250mA, white Spare battery pack for the Induction Charger for Magic Mouse
The extra battery pack for the Induction Charger for Magic Mouse is a handy add-on battery pack that offers a spare battery for the Induction Charger for Magic Mouse—anytime, anywhere. You can simultaneously charge a battery, while using the Magic Mouse with the second battery pack. This ensures that you always have a fully charged battery for the Magic Mouse. The extra battery pack is especially handy, when several people at home or at work use a Magic Mouse. In this case you can simply equip several Magic Mouse with an extra battery pack and use an induction charging station to recharge the packs. This will save you from having to buy separate chargers for each user.

The use of the extra battery packs for the Artwizz Induction Charger for Magic Mouse requires an induction-charging unit and an induction charger for Magic Mouse. The battery packs are only compatible with the Artwizz Induction Charger for Magic Mouse.
Technical Details
Input: DC 4.5 - 5.3 V
Output: 5 V DC / 250 mA