This Alkaline Battery Pack is designed for your Garmin Rino 520 or Rino 530 GPS Reciever. This pack allows you to use standard alkaline batteries with you Rino 520 and Rino 530

*** When using the Alkaline battery pack, the transmit power is reduced on 5 watt American Rino radios to 2 watts. The Canadian version of the rino 5XX is not affected.