New Ariic Portable SMART POWER BANK Case for iPad 2 /iPhone/MP3/4 18650 Battery Can put 2 18650 3.7V ONLY batteries for digital products charging, such as 2 2200mAh 18650 batteries can be turned into one high capacity 4400mAh mobile power Large capacity with large expand ability LED 3-states battery indicator 2 x 5V 1.5A USB interfaces allow you to recharge digital products at any time Mutiple Functional Assembling 1 or 2 sets 18650 Li-battery(any capacity),It can be Power Bank. It supports charging for 5V devices (I&lt;1.5A), Cell Phone, IPAD, PDA,GPS,MP3,MP4,DSC,Game Player,Flashlight,etc; it can be charger of 18650 Li-Battery as well. Smart Management: Supprot replacement of 18650 Li-Battery. Easy-use and secure(see fig) Support 1 or 2 sets Li-battery both. Support any capacity 18650 Li-battery without capacity matching. Support 3.6V and 3.7V Li-battery. Support charging 2 devices at the same time( the Max currency is 1.5A) Supprot recovery of over discharging battery. Support 3 levels LED indication Smart Indication: Power Indication: Press the key for 1-2 seconds, power indication LED will be on. 1 LED being on for 0-30%25 capacity last; 2 LEDs being on for 30-65%25 capacity last;3 LEDs being on for 65-100%25 capacity last. Charging Indication: the Flashing LED indicates the current capacity level being charged. When the batterys are full , the 3 LEDs will all be on for a several seconds then shut down. Security: Using Japan SeiKo Li-Battery protection IC Charging management protection MCU mornitoring protection Battery reverse protection