Boys Christmas Toys

Charge up your LEGO with the LEGO Power Functions Rechargeable Battery Box. Use it in your LEGO Power Functions models and never have to use disposable batteries again. This rechargeable battery box has built-in Lithium polymer batteries for low weight and maximum power. Use the #8887 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.