Features: Ultra compatible with Baofeng UV-5R Radio, work well as original one. 2100mAh large capacity replacement battery, a necessary backup for your two way radio No Memory effect, you can use it any time and no need to discharge it fully then start to use. Safety Ensured, effectively protection Over-charge, over-discharge, over-heat, over-current and amp; short-circuit protection. Extra longer life, upgrade your using experience with UV-5R Radio.