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Started By
Message
Someone please school me on marine batteries
Posted on 2/6/24 at 9:54 pm
Posted on 2/6/24 at 9:54 pm
I bought an old pontoon boat a couple years ago, and never really paid much attention to the battery set-up.
Boat won’t start this week, and it’s time to update the batteries.
It’s a merc 2-stroke (90hp).
I have a 15” sub, 2 amps, and 4 other speakers to power, along with the head unit and lights. No trolling motor or anything else at the moment, but that could change.
Would y’all go with 1 starting battery & 1 deep cycle? Or just 2 deep cycle/dual purpose type batteries, since they have 700+ cca
Boat won’t start this week, and it’s time to update the batteries.
It’s a merc 2-stroke (90hp).
I have a 15” sub, 2 amps, and 4 other speakers to power, along with the head unit and lights. No trolling motor or anything else at the moment, but that could change.
Would y’all go with 1 starting battery & 1 deep cycle? Or just 2 deep cycle/dual purpose type batteries, since they have 700+ cca
This post was edited on 2/8/24 at 11:44 am
6
Posted on 2/6/24 at 10:41 pm to UFownstSECsince1950
Go with an Interstate and then, during the off season, put a battery tender on it to keep it charged. It'll last a long long time.
Once those batteries go dead your pretty much screwed. Never let them hit rock bottom.
Once those batteries go dead your pretty much screwed. Never let them hit rock bottom.
Posted on 2/6/24 at 11:16 pm to UFownstSECsince1950
I never connect accessories to my cranking battery accept maybe the bilge. Just me.
Posted on 2/7/24 at 8:26 am to UFownstSECsince1950
quote:
I currently have a 15” sub, 2 amps
That oughta suck that battery down quickly. The charging system on that 90 Merc isn't going to keep up with keeping those batteries charged.
quote:
marine batteries
Those have crayons in them instead of lead plates.
Posted on 2/7/24 at 8:33 am to scrooster
quote:
Go with an Interstate
No; go with the Ever Start Maxxs from Wal-Mart. Warranties are MUCH better. I have 2 Ever Start Maxx Deep Cycles for my trolling motors. They come with 2 yr warranties vs Interstate 1 yr.
For starting batteries you can get Ever Start Maxx cranking batteries that have 5 yr warranties; first 3 yes full replacement. Are these "marine" batteries? No but a cranking battery is a cranking battery.
Posted on 2/7/24 at 10:18 am to Wtodd
quote:Yup
Go with an Interstate
No; go with the Ever Start Maxxs from Wal-Mart.
Posted on 2/7/24 at 10:22 am to AlxTgr
If you have a Costco membership, they have great prices on batteries.
Posted on 2/7/24 at 10:46 am to DownshiftAndFloorIt
Sam's Duracell are fantastic. I would still be using one of their 31s if I had not switched to lithium.
Posted on 2/7/24 at 10:49 am to Wtodd
quote:
No; go with the Ever Start Maxxs from Wal-Mart. Warranties are MUCH better. I have 2 Ever Start Maxx Deep Cycles for my trolling motors. They come with 2 yr warranties vs Interstate 1 yr.
For starting batteries you can get Ever Start Maxx cranking batteries that have 5 yr warranties; first 3 yes full replacement. Are these "marine" batteries? No but a cranking battery is a cranking battery.
Okay thanks, I'll give them a try although, I can't remember the last time I was in a Walmart.
Posted on 2/7/24 at 12:06 pm to scrooster
I don't think you'll be disappointed.
A few years ago I spoke with an Interstate Tech Rep on the phone and ask him why I shouldn't go with the Ever Start Maxx cranking battery when Interstate only had a 1 yr warranty and the Ever Starts had 4 or 5 yrs and he said "well you probably should"
To date I've had, knock on wood, no issues with either type.
A few years ago I spoke with an Interstate Tech Rep on the phone and ask him why I shouldn't go with the Ever Start Maxx cranking battery when Interstate only had a 1 yr warranty and the Ever Starts had 4 or 5 yrs and he said "well you probably should"
To date I've had, knock on wood, no issues with either type.
Posted on 2/7/24 at 12:14 pm to AlxTgr
quote:
Sam's Duracell are fantastic.
That's what I use.
This post was edited on 2/7/24 at 12:15 pm
Posted on 2/7/24 at 12:21 pm to UFownstSECsince1950
quote:ideally...
The current configuration is a 24DC & 27DC which I always just ran on “Both” and probably was not the ideal set-up
-cranking battery connected to the outboard only
-house (deep cycle) battery for everything else
-both wired thru a battery combiner with separate on/off switches... like THIS
that way, the outboard alternator will charge your batteries while running, and separate the crank from house when the key is off. very easy set-up to install and you'll never have a dead battery
Posted on 2/7/24 at 2:58 pm to UFownstSECsince1950
I just put irrigation unit batteries on my boat that I buy from the parts house for 50 bucks
Posted on 2/7/24 at 4:13 pm to AlxTgr
I'll have to read up on it again but I think lead acid batteries only come from a small number of factories and get rebranded to whoever ordered them.
Posted on 2/7/24 at 4:25 pm to Purple Spoon
Same. I want to be able to use the motor no matter how much I jammed out that day.
Posted on 2/8/24 at 8:16 am to DownshiftAndFloorIt
quote:
go with the Ever Start Maxxs from Wal-Mart
Agreed.
quote:
I think lead acid batteries only come from a small number of factories and get rebranded to whoever ordered them.
There's not many
Posted on 2/8/24 at 9:06 am to Wtodd
quote:
No; go with the Ever Start Maxxs from Wal-Mart. Warranties are MUCH better. I have 2 Ever Start Maxx Deep Cycles for my trolling motors. They come with 2 yr warranties vs Interstate 1 yr.
For starting batteries you can get Ever Start Maxx cranking batteries that have 5 yr warranties; first 3 yes full replacement. Are these "marine" batteries? No but a cranking battery is a cranking battery.
I have used walmart marine batteries exclusively in my boats and rv. They last about a year and I simply take them back, they make a slight adjustment on them, and I reinstall them. They are cheap, you can replace one no matter where in the US you are with relative ease and they are very good abouy warrantying them.
You do not need a marine battery to use as a cranking battery on a boat. If you have everything fed from the same battery a marine battery is best, in my opinion, because the odds of you discharging with radios and lights is greater...unlikely to ever discharge a cranking battery simply cranking an outboard unless it is very hard to start and you would probably ruin the starter before you killed the battery in that case.
Posted on 2/8/24 at 9:10 am to Purple Spoon
quote:
I never connect accessories to my cranking battery accept maybe the bilge. Just me.
I never have either until I bought some modern electronics and my trolling motor screwed with them. Now I have a cranking battery, 2 batteries for my trolling motor and all of the shite on the boat that ain't fish finders and 2 batteries for my livescope setup...they EAT batteries. 5 batteries in a 20 foot john boat with a 60HP tiller LOL. At last count 23 circuits. I have lived in houses with fewer circuits....
Posted on 2/8/24 at 9:26 am to AwgustaDawg
Another benefit of the lithium cranker-I have every accessory on it, including 3 9" graphs and livescope, and I may never have to charge it again. That's even with very short runs of the big motor. I have 3 batteries, and only need to charge because of the trollers and then, it's probably after 3/4 trips. I can now go to Toledo and not have a single care about how far the closest outlet is.
Posted on 2/8/24 at 10:50 am to AlxTgr
quote:
Another benefit of the lithium cranker-I have every accessory on it, including 3 9" graphs and livescope, and I may never have to charge it again. That's even with very short runs of the big motor. I have 3 batteries, and only need to charge because of the trollers and then, it's probably after 3/4 trips. I can now go to Toledo and not have a single care about how far the closest outlet is.
Your have some sort of filter between your graphs and the trolling motor? I would swap over in a heartbeat if I knew for certain it wouldn't foul up my Garmin's (3-10 inch graphs and livescope, Minn Kota Terrova)
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