With an extra battery on hand, you"ll never be without the power it takes to get the job done. Flight delays, power outages, extended trips. You can"t always recharge your BlackBerry device when you"d like to. But with an extra battery on hand, you can always talk, type and work as long as you need to. Keep it in your bag or briefcase and you"ll stay connected, powered up and ready to get the job done. This 1100mAh battery is required for use in the BlackBerry 7100i/ 8700 / 8300 Curve. It is also compatible with all the BlackBerry 7100, 8700 and 8300 Curve series.