The Louvolite Solar Charger is to only be used with Louvolite Rechargeable Lithium motors. The solar panel has a 2.5mm jack and a long 2.5m metre cable. The product length is 385mm and the width 55mm. The cell gathers daylight and turns it into electricity, which it uses to trickle charge the motor 12V 1W (+/-5%). Please note that if you order this with motors we will fully charged the motor first using a wall charger, to allow the solar panel to work efficiently. A solar panel is designed to trickle feed your motors battery, extending the times between charges. If you don't have enough sunlight you may require a wall charger for a full charge. Mounts included.