has introduced the Keystone ECO Booster portable battery pack for micro USB smart phones in the U.S.
The portable Keystone ECO Booster charges and extends the battery power for smart phones and is the newest addition to the line of proven power performers from Concord Keystone, including
and other charging units and accessories, the company said.
The Keystone ECO Booster has a built-in retractable Micro USB charging cable so no additional accessory is needed. The Booster has an adhesive gel pad hidden beneath a removable protective cover. After removing the protective cover, the Booster can be attached neatly to the back of the smart phone without slippage. The protective cover for the adhesive gel pad can be relocated to the back of the Booster to be used as a horizontal or vertical viewing stand, Concord said.
The Keystone ECO Booster portable battery pack offers up to double the battery life for most Micro USB smart phones and is fitted with a battery check button & LED status indicator to show the charge level of the Booster.
The suggested retail is $49.99.