Want more power for your "Blue Box" mounted fish finder? This extender is the answer to your dead battery blues! Upgrade your unit today with a Blue Box Extender to accommodate the 20Ah Amped Outdoors Battery!
 
*Please be aware that product molds and battery sizes can have minor dimension changes. This may require you to shave off some of the "Blue Box" battery holder tabs to adjust for battery height. 
 
This product includes:
Blue or Glow-in-the-Dark Extender with mounting hardware
 
Add on option:
Large battery cover with hardware