Xfox USB Smart Charger Vehicle Charging Cable(DC 5V Input) for Baofeng BL-5 3800mAH Battery for Baofeng UV-5R Serise The cable is used with baofeng BL-5L 3800mAh long-battery. Power devices from a USB port(Computer,Car USB port, even a Mobile power bank, it works with any USB port) For small electronics and devices which use a 4.0mm barrel jack for a power cable. Charging connector size: 4.0*2.1*11 mm.(fit for 5R Long Battery power port) Compatible With: BAOFENG UV-5R serise BL-5L 3800mAh battery.