BaoFeng, BTECH BL-5L 3800mAh Li-ion Battery Pack, High Capacity Extended Battery for UV-5X3, BF-F8HP, and UV-5R Radios…

7. 4V 3800mAH Replacement Battery for UV-5X3, BF-F8HP, UV-5R Series Radios This is the OEM spare or replacement battery for BaoFeng BF-F8HP, UV-5X3, and UV-5R series radios It works on: UV-5X3 BF-F8HP UV-5R (and original UV-5R variants)

Genuine OEM BTECH (BaoFeng) BL-5L (BL-5 Series Li-ion Battery). Genuine batteries include battery protections that protect your battery from over-charging, over-heating, short circuiting, and more. The BL-5L is a great tactical addition for your ham radio go kit.
Extended Long Life replacement battery for the UV-5R and BF-F8HP Series BaoFeng Radios. The BTECH BL-5L is an essential accessory to prolong the battery life compared the stock BaoFeng BF-F8HP battery or UV5R battery.
The BTECH BL-5L Baofeng battery pack, more then doubles the battery life of your UV-5R series radio, when compared to the stock BL-5 Battery. Average users can will be able to go 2 days without a charge; while light users can go a whole week without needing to charge your battery.
Not only does the BL-5L extend the battery life of your radio; but it also adds 1.5″ of length and 3 additional ounces when compared to the UV-5R with a stock BL-5 battery. This allows for a more solid feel in the hand when compared to using your radio with the stock BL-5 battery.
Pair with the BTECH BT1013 USB Charge cable for easy charging — External Quick Charge Port, the BL-5L adds an external 7.4V charging port to allow the battery to charge without requiring the use of a CH-5 charging base.