Now You Can Talk Longer With a Samsung U520 Extended Battery Don't overpay when purchasing a new Samsung extended battery. This Samsung U520 extended battery includes a compatible battery door and is made with the highest quality and guaranteed to work like factory originals. Use it as a back up battery or replace your original with an extended battery for longer talk time.  FEATURES Samsung U520 extended battery gives you more talk time and standby time (compared to standard battery) 100% phone compatible* 3.7V, 1200mAh lithium-ion battery** Extended battery door included Great for use as replacement or back-up Memory-effect free Color: Black    Package includes Extended battery Extended battery door Compatibility Samsung U520 IMPORTANT DISCLOSURES
*Extended batteries extend out about 1/4" from the phone and may cause compatibility issues with standard accessories.
**Actual mAh rating may fluctuate +/- 100mAh without notice. Samsung U520 Extended Battery w/Battery Cover - Black