ChargingThat's for charging a 3800mAh battery using the side jack. To charge the BL-5L 3800mAh battery you must purchase a:
TYT TH-UVF9 battery charger for 110VAC or
TYT TH-UVF9D for 12VDC.
These are fully regulated chargers
Plugs directly into side of battery, not a charger base
The AC wall wart has a charging indicator. Red while charging, Flashing Green Red when charged.