radio performance is degraded. These are the radio’s indicators to alert you to a low battery:   
1)  Red lamp on RX/TX LED blinks (every 0.5 second) during transmission or reception, and 
LOW BATTERY beeping sound occurs during use. 
2)  Battery indicator icon is blinking. 
 
5.3 How to Charge   
1)  Make sure power adapter for the Dual Slot charger is plugged into the charger (Figure 5-1) and 
then plug the power adapter for the TSA-0400 charger into an AC120V power outlet. 
2)  Turn off the radio before charging. 
3)  Insert radio into the charger’s larger, front charging port with the charging contacts on the outside 
of the radio lined up with the contacts on the charger. LED labeled “F” on the charger will turn on 
when the connection is made.   
4)  If charging the battery only, line up the outside contacts of the battery with the charging contacts 
on the 2
nd
, smaller charging slot in the rear of the dual charger and then insert the battery. LED 
labeled “R” on the charger will turn on when the connection is made.   
5)  It is recommended to charge another 30 minutes after the LED turns green for a complete charge.     
 
 
 
5.4 Charger (TSA-0400) 
           
Figure 5-1) TSA-0400 and Adapter