JETBeam JR51 21700 5100mAh 3.7V Protected High-Drain Lithium Ion (Li-ion) Button Top Battery with Built-In Micro USB Charging Port

JETBeam JR51 Rechargeable Li-ion 21700

5100mAh Battery with USB Charge Port

The JETBeam JR51 is a rechargeable li-ion battery perfect for high-powered flashlights and more! This 21700 battery has a massive 5100mAh capacity to provide long runtimes to compatible electronics. A built-in protection circuit enhances safety with the JR51, with safeguards against over-charge, over-discharge, and incorrect installation (reverse polarity protection). Complete with a Micro-USB port, you can recharge directly from outlets, power banks, and more!