Lego Power Functions Rechargeable Battery Box

LEGO Power FunctionsRechargeable Battery box  Confirm availability before ordering. Goods will be dispatched and delivered within 14 days.       No more disposable batteries! This rechargeable battery box has built-in Lithium polymer batteries for low weight and maximum power. Use it in your LEGO Power Functions models and never have to use disposable batteries again!

• Use the #45517 10VDC LEGO Transformer to charge the battery!
• Motor speed can be controlled via the battery box speed control dial!
• Output voltage is 7.4 V!