100% Brand New.1)Universal USB/AC Charger:* This is an universal charger , which can charge virtually all smartphone li-on batteries in the market.* The top panel could be slided and the metal contact pins are also moveable.* You can slide it back and forth to fit virtually any size of Li-On batteries in the market.* You only need 2 pins to charge a battery.Here is the instruction:* To Charge the battery for Netgear AirCard 771S , allow the 2 metal pins on the charger to touch the 1st and the 4th contacts of battery. * For other batteries, it's not necessarily to be the 1st and 3rd though, please refer to the user manual.* You should see the LED light turn blue on the charger, that means the contacts has been firmly connected.* Now you could plug in the charger with the battery into a power socket.* The LED Light will turn Red when charging the battery, turn blue to indicate the battery is fully charged.* Input: AC 100-240V 50/60Hz Max100.* Output: 4.2V 400MA.* USB Port Output: 5V 800MA.