3.1A USB Car Cigarette Lighter Power Charger DC 12~24V Universal Motorcycle USB Charger

Very convenient and easy to use. Short circuit / overheat protection. Easy to install - no need to cut out a big hole. Apply to all USB charging mobile phones or other electronic products. Waterproof dustproof material can be used for the interior and exterior application. Multifunctional product with double blue LED indicator lights�� perfect for travel use. Widely used with electric equipment for power supply: Vehicle��GPS�� mobile phone�� camera�� mp3. Usage: Can be installed in any 12 v and 24 v motorcycle�� boat�� riding mower�� tractor or cars. and insert the connector of car charger adaptor into the PDA to realize recharging the PDA. Connection method: First�� open a hole of 2.8 CM��and of the charge back is marked with "+" "-"�� "+" to keep the battery anode�� "-" to keep the battery negative level