This is an OEM battery, manufactured and approved by BlackBerry. Guaranteed to work with the approved PDA/Phone. Only genuine BlackBerry smartphone batteries work best with your device, holding their charge longer and taking the maximum number of charges over their lifetime. Will work for following Blackberrys: * BlackBerry Curve 8300 * BlackBerry Curve 8310 * BlackBerry Curve 8320 * BlackBerry Curve 8330 * BlackBerry Curve 8350i * BlackBerry Curve 8520 * BlackBerry 8700c * BlackBerry 8700f * BlackBerry 8700g * BlackBerry 8703e * BlackBerry 7130c * BlackBerry 7130e * BlackBerry 7100i * BlackBerry 7100t * BlackBerry 7100g * BlackBerry 7105t