The USB-PM charger is the best option for boats and any outdoor vessels. Capable of loading up to 5VDC / 3A MAX, the charger can charge up any smartphones, tablets and GPS devices.The USB charger also provides express charge mode for Apple devices, including iPad and iPhone. Dual-port USB design allows user to charge up two devices at the same time. The product is IP-66/CE/FCC/ RoHS rated., , , , ,