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Many people have asked how much power does a fish finder use in my article on the best fish finders. So I decided to do a little research and find out the answer for all of you.
Most people search for the answer to this question because they are trying to determine how long their battery will last if they add a fish finder drawing from it.
How Much Power Does A Fish Finder Use? – Real Life Experience
Fish finders do not use much power. Most units draw less than 1 amp per hour with many drawing as little as .25 amps or 250 milliamps per hour.
Fishing enthusiast atv223 over at Stripers Online ran an 18-hour test of his color fish finder with GPS. He owns a Lowrance Elite 4 fish finder and found that his fish finder used only .20 amps per hour. (200 milliamps per hour) This was less than the manufacturer’s specification of .25 amps per hour.
How Long Will A Fish Finder Run On A Battery?
His test showed that with a battery that holds a 5 amp charge would last up to 20 hours. His lasted 18 hours and was not completely depleted.
So you do not need to fear that a full-featured fish finder will draw much power. If they pulled any less energy, they would be called battery chargers!
I hope this answers your question about how much power does a fish finder use. Please feel free to share with us how long your fish finder lasts on a single battery charge in the comment section below. Your experience may help others.
Do you need some help learning how to operate your fish finder? Check out this informative article on fish finder basics.
Do you need to know where to mount your fish finder? Here are 4 fish finder mounting locations.