The Battery Booster is used to increase the used capacity and prevent complete discharge of external batteries for the RACE RESULT Decoder.

It boosts the voltage feeded into the decoder, so that the external battery is always preferred over the internal. 

Insert the Booster between the 12V Jack of the decoder and the cable to the battery.

There is no switch, it immediately starts its operation, indicating the current state with its LED.

• When connecting a new external battery to the Booster, it must be charged to at least
  • 11.9V to light the LED green
  • 11.5V to light the LED orange 
  • else the booster will not turn on and light the LED red 
• As soon as the Booster started successfully (as in "not red")
  • a green LED indicates that the battery is still charged >10.9V
  • an orange LED indicates that the battery is still charged somewhere below 10.9V
  • when the LED turns red, the battery is discharged to below 10.5V and the output is disabled to protect the battery from deep discharge