Where do you put your batteries?

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Where do you put your batteries?

Post by MarkRyan1981 » Sat Apr 04, 2015 4:48 pm

Hello all,

I am installing a wizard new Waeco fridge and Propex heater on Triola - more toys means more power consumption and a realisation that a second domestic battery is now a requirement. I currently have a 80AH engine battery and a 100AH domestic battery housed behind the chart table in an enclosure made by the previous owner... I don't like having weight that far over one side of the boat, however, there we go, thats where it is (photo is behind the chart table in the port side locker, look forword, with me nestled in the cockpit locker itself!):


I was thinking perhaps building a new enclosure under the cockpit, and bit like these guys did here:

http://yachtauriga.blogspot.co.uk/2014/ ... rs_12.html

Where do you keep your power? Do I just add another big heavy thing to my port side? Or move it to a point more central?


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Re: Where do you put your batteries?

Post by Liese » Sun Apr 05, 2015 7:11 pm

We have them in the initial / original location.
Works fine for us.
1. engine starter battery - not sure about Ah.
2. domestic 70 Ah (min. 9 years old - bought with the ship)

But I have to buy one new battery for Silverrudder I guess :-)

Best regards,

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Re: Where do you put your batteries?

Post by prjacobs » Mon Apr 06, 2015 4:38 pm

I have 2 Group 24 AGM's under the forward end of the V-berth. It's tight for height clearance, but it works for me. My electrical loads are minimal, but if I needed another battery I think I'd go with one under the cockpit. All my major wiring runs are very short with this setup (except the wires to the windlass, which run up to the bow).
As you can see in the picture, I also use that space for "hopefully never needed" spare parts.
P1050146.resized.JPG (462.95 KiB) Viewed 7451 times

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Re: Where do you put your batteries?

Post by ibbo » Thu Feb 08, 2018 4:13 pm

Hi Mark,

Did you ever move the batteries?

Mine are in the bottom of the same locker as yours,so I could just drop one in the same locker you have yours in,but I keep eyeing up the wasted space below the cockpit floor. A battery mounting under there would provide additional support and bracing for the rear of the hull, and the cockpit floor.

My other thoughts for that area go round the fact it is the right size for 2 x jerry cans, or water containers, though access is poor. What else could I use it for?


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Re: Where do you put your batteries?

Post by Tom » Thu May 03, 2018 12:12 pm

I'm planning on an under cockpit battery tray this year. Few jobs to tick off and I'll get started.
Yellow Ballad, Sundance 979

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Re: Where do you put your batteries?

Post by ibbo » Wed May 09, 2018 7:58 am

I shall be making a start on a new battery box this week I think. I have now 2 x 100ah, and 1 x 85ah to re house.
Depending how much room there is I may leave the 85ah where it is.
I run a Waeco cool box, eber type heating, and had a tiller pilot on for quite a few hours this weekend. The single battery did keep up to voltage with 140w of solar.

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Re: Where do you put your batteries?

Post by tedmroyer » Thu Aug 30, 2018 12:18 am

I have moved my 4 X 105 AH batteries to a new location under the aft end of the main salon berths, two on each side, still electrically tied to a single bank. I can add up to six more (three more to each side) if I need them. It cost me the four drawers but it helps get the weight out of the bow since I have 400 extra Lbs of chain, anchor, windlass and bowsprit up there.
Ted Royer
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Re: Where do you put your batteries?

Post by Cyclooctatetraene » Sat Mar 23, 2019 1:25 am

Instead of just asking stupid questions I can now finally also report something constructive.
We before had the starter battery (100 AH approximately, was an odd size 27HM battery) under the quarter berth / nav table settee (Ballad with Nav table facing forward) and the two 215 AH 6V GC2 batteries under the Vberth.
This setup worked fine, but the GC2 batteries weigh something upward of 70 pounds each and the 27HM starter battery was not exactly light weight either. On top of that, I didn't really love the idea of generating hydrogen gas right under my sleeping surface... I don't smoke, and I know that hydrogen is not toxic, but this just didn't seem right.
What I now did is move the whole battery setup under the quarter berth.
We changed to a 35AH AGM battery as the starter battery and a 170AH Lithium Iron Phosphate battery as the house bank.
This whole setup fits very nicely under the quarter berth (there is also a flexible water tank in there that feeds our water heater) and weighs together the same as ONE GC2 battery!
Since the two battery chemistries are obviously completely different they are 100% decoupled. The AGM battery is charged through a Balmar Duo Charge and only feeds the engine electrics and the starter motor. Everything else runs from the LFP battery.



The batteries are either charged by a solar setup through a Renogy Rover controller (300w, 2x 50w on the dodger, 2x 100w on the sides), or a Xantrex Freedom XC inverter / charger (that one lives under the vberth in one of the storage compartments), or a Balmar alternator with a smart charge controller (so that we don't cook the new LFP battery to death)

This was all in all a pretty work intensive week and I still have to rip the old wiring out of the starboard side, but just alone the speed with which we can recharge the LFP battery was worth it!

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