--This SAE adapter has a built-in voltmeter. Detect and display the voltage when power is on.
--The SAE to USB adapter is designed for use on any 9-24 volt battery, and is used to charge any Phones, GPS, Camera, digital cameras.
--With dual USB plugs, output 5V/2.1A & 5V/2.1A. This motorcycle charger lets you charge any two smartphones or tablet devices simultaneously.
-- Intelligent circuit design protects against excessive current, overheating, and overcharging.