Instant cell phone charger provides fast, long-lasting charging power for your cell phone. Provides up to 10 hours of talk time or up to 12 days of standby time on two AA Energizer Lithium batteries. Compatible with most cell phone brands. Patented intelligent control chip maximizes power transfer from the charger to the cell phone. Power conversion technology is designed to optimize battery performance. Reusable, lightweight, durable, convenient, easy to use, portable and fast. Simply replace batteries. Cell phone charger features LED charge indicator and battery leakage safeguards.