Powermat Power! Dual 1850 Rechargeable Battery Backup. This rechargeable, portable, backup battery provides power on the go for smartphones and hundreds of other devices. Charges two devices at once with its Micro-USB and Apple connectors. Recharges when placed on any Powermat Charging Mat or when plugged into a computer. 1850 mAh battery more than doubles the life of most smartphones. Includes: Dual 1850 and USB cable. Available in black. Charge it. Take it with you. Always have POWER!