Hi Guys,
Inherited a Garmin GPSMap168 (GPS/fishfinder combo)...and am wondering about the best type of battery to use for long fishing days. Maximum power usage is 10 Watts. Assuming maximum power usage, any idea how long the smaller 12V 7-8A batteries would last, or should I go straight to a Marine Deep cycle. I am trying to keep the weight down in my 14ft aluminum boat, but a man's gotta do what a man's gotta do.
Any advice would be appreciated.
Thanks