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
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
The suggested retail is $49.99.