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When to replace batteries? Every year?

Old 03-16-2010, 01:54 PM
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Default When to replace batteries? Every year?

I have a boat that I purchased April 2009, I run a 4 battery system. Do I need to replace all the batteries this year before I begin the heavy fishing season? What would most of you do, I usually fish 60-80 miles off, however I mostly always have at least one motor running? Thanks for any help!
Old 03-16-2010, 01:55 PM
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huh? every year?

Sears agm's every 4 years....
Old 03-16-2010, 01:59 PM
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Originally Posted by Glen E View Post
huh? every year?

Sears agm's every 4 years....
Thank you. That's what I though, however someone at the marina the other day said every year! Thanks for the help! You know your electronics!
Old 03-16-2010, 04:29 PM
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Default batteries

If you have a good battery management system your batteries will last a long time, I also run a 4 battery system and have a 4 battery charging/maintenance system that has been super. Good luck, Dick
Old 03-16-2010, 06:03 PM
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Originally Posted by RButler View Post
Thank you. That's what I though, however someone at the marina the other day said every year! Thanks for the help! You know your electronics!
Someone at the marina wanted to pad their revenues that month......
Old 03-16-2010, 06:05 PM
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Originally Posted by RButler View Post
Thank you. That's what I though, however someone at the marina the other day said every year! Thanks for the help! You know your electronics!
The person who told you to replace your boat's batteries every year probably sells batteries for a living!

It depends on the batteries, the boat, the use, and care and maintenance. There's no "set" life for a battery. Three to five years is a place to start.

My system is to replace them when they no longer work properly.
Old 03-16-2010, 06:30 PM
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Originally Posted by RButler View Post
I have a boat that I purchased April 2009, I run a 4 battery system. Do I need to replace all the batteries this year before I begin the heavy fishing season? What would most of you do, I usually fish 60-80 miles off, however I mostly always have at least one motor running? Thanks for any help!
Yes, every year and give me a call and I'll pick them up, properly dospose them for you, and pay the core also.

I have a 2006 console boat and the starting batts are as good as day one. Some people replace them before they go bad. I replace them after they go bad.
Old 03-16-2010, 10:36 PM
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It's possible they may have intended that with 4 batteries, some folks replace 1 each year to avoid 4 battery wallet shock , though it is often recommended to use same group /type batteries of the same age to keep the charging system(s) happy.

3-4 yrs use is fairly typical for normal use and good maintenance between preventative replacements , but individual battery quality and use care or abuse can extend or shorten that average by a years. Some batteries can die or be severly limited in capacity right away if allowed to essentially fully discharge.

Best thing is to check them with a real load tester and/or quality algorithym battery analyzer at least a couple times a year after full charging attempt , or anytime you suspect some kind of anomaly. Any auto parts store will check with their testers if you don't want to spend for the analyzer, but a load tester is fairly inexpensive. Keep them fully charged, but not overcharged & boiled off, and if you have access on flooded type- keep electrolyte topped up with distilled water to the point reflection in the hole just goes from flat to concave. Terminals bright and cable connectors tight, and happy boating!

BTW, A very good multiple battery switch setup can back up most any need if a battery goes bad, but a set of quality HD 16-20' jumper cables can be a very handy thing to keep aboard to help you or others in need out there.
Old 03-17-2010, 05:45 AM
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I have a friend who sells batteries industrial and marine,,fishes with me all the time and his average is every 3 years. He sells DEKA which I have used going on 20 years in vehichles,vessels,forklifts. Never broke down due to bad batteries. Knock on wood after saying that.LOL
Old 03-17-2010, 05:50 AM
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Originally Posted by TTaxi View Post
It's possible they may have intended that with 4 batteries, some folks replace 1 each year to avoid 4 battery wallet shock , though it is often recommended to use same group /type batteries of the same age to keep the charging system(s) happy.
Assuming that they were all new at the same time, replacing them all at the same time would be the best thing to do. An exeption would be if one failed within a year or so of being new.

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