Rechargeable Backup Battery for Smartphones, Cell Phones & Cameras. Compatible with most BlackBerry models. Keep your smartphone, cell phone and digital camera charged and ready, no matter where you are. Provides three complete charges. Unlike other chargers that are spent after one use, this backup battery gives you three complete charges before it needs to be recharged (talk time varies depending on model). Portable and rechargeable. Our rechargeable battery fits easily in your briefcase or tote. The included lithium ion battery can be recharged 300 times. Also includes USB cable and AC adapter. Note: for use with devices that are charged via mini-USB port. Don't get caught without power for your handhelds. Keep them charged with Rechargeable Backup Batteries from Brookstone. BlackBerry is a registered trademark of Research in Motion, Ltd.