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Battery Advice

Old 04-02-2018, 07:07 PM
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Default Battery Advice

I have an Outer Banks 26 under construction and will power it with a 90hp Yamaha. This motor has a 35amp alternator. I don’t expect to have a lot of electrical demand since I am skipping refrigeration, water heaters, etc. I will have lights, GPS, possibly radar and electric windlass. Might install a solar panel to keep the batteries topped off when she is hanging on the mooring. My battery knowledge is 30 years out of date so any advice is appreciated. I am tempted to go with “old fashioned” lead acid batteries but have an open mind. I expect to have a smaller start battery and larger house battery or batteries.
Thanks in advance for any advice. Any other thoughts on the electrical system would be appreciated as well.
Ken
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Old 04-02-2018, 07:29 PM
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Originally Posted by kennneee View Post
I have an Outer Banks 26 under construction and will power it with a 90hp Yamaha. This motor has a 35amp alternator. I don’t expect to have a lot of electrical demand since I am skipping refrigeration, water heaters, etc. I will have lights, GPS, possibly radar and electric windlass. Might install a solar panel to keep the batteries topped off when she is hanging on the mooring. My battery knowledge is 30 years out of date so any advice is appreciated. I am tempted to go with “old fashioned” lead acid batteries but have an open mind. I expect to have a smaller start battery and larger house battery or batteries.
Thanks in advance for any advice. Any other thoughts on the electrical system would be appreciated as well.
Ken
this is a several video series on YouTube that helped me greatly understand marine electrical. Was very beneficial to me when I re wired my Whaler. Could be beneficial for you

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Old 04-03-2018, 04:00 AM
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Originally Posted by kennneee View Post
I am tempted to go with “old fashioned” lead acid batteries but have an open mind. I expect to have a smaller start battery and larger house battery or batteries.
IMO the additional $ for AGM is well spent,
for the advantages gained over traditional flooded:

- no corrosive outgassing

- no possibility of spillage (and can be mounted in any orientation )

- charges faster/more efficiently

- significantly lower self-discharge rate

- no maintenance (watering) required

- better cold temp performance

- lighter, more vibration resistant

The only “Con” (besides purchase cost) is intolerance to overcharging -

but with your planned engine, and an appropriate solar charge controller,
that should not be a concern.

Again, IMO, for connection, a "dual circuit" battery switch
will allow simple on/off control of both batteries separately but simultaneously -
with ability for emergency combine

https://www.bluesea.com/support/arti...Battery_Switch

and then a Yandina Combiner -
the most cost effective means to share the charging of both Yamaha and your solar:

https://www.yandina.com/c100InfoR3.htm



Originally Posted by kennneee View Post
I have an Outer Banks 26 under construction
did not know what an Outer Banks 26 was, so googled - and found your build thread. Amazing!
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Old 04-03-2018, 05:10 PM
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Thanks Guys this helpful.
Ken
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Old 07-24-2018, 08:41 AM
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is there an advantage to the Yandima as opposed to buying the Blue Seas Add A Battery kit? I can get the kit for around $80 and it looks like it does the same thing. Any input apprecitated.
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Old 07-24-2018, 09:21 AM
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I suspect that proud marketing people from both Blue Sea and Yandina will each draw some distinctions -
but practically they both "do the same thing".

The Yandina comes with wires/terminal lugs - you need to provide the wiring for the Blue Sea:
So one is "easier"/requires no additional parts, the other "has flexibility"

Some might say the Blue Sea has a more "polished" appearance - if that matters.

If you can actually get the Blue Sea "kit" - includes a very nice battery switch - for $80, that's a great deal.

I see the Yandina on-line for $59.99
cheapest may be the Mini Blue Sea ACR by itself, not kit - I have seen for $49.99
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Old 03-15-2019, 11:02 AM
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[left]As with many things connected with boatbuilding, progress is slower than you plan. Anyway, I am finally going to order my house battery. Planning on buying an OPTIMA AGM. As I mentioned in my previous posts, I don’t expect to have a huge need for battery capacity. My original thought was a group 34(55ah)but am now thinking for a slight difference in price I should go for a group 27(66ah). Does this make sense or am I missing something?
Here is a link to my Outer Banks 26 build if you are interested. Scroll to the end to see where I left off in November before taking the Winter off to travel to the sun. Should be back at it in a couple of weeks.
https://goo.gl/photos/42vU3BKQDsnMxbPp9
Ken
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Old 03-15-2019, 11:41 AM
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A 26' boat with 90 hp? Is it a sailboat?
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Old 03-15-2019, 11:47 AM
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Stay away from Optima.Go with Odyssey AGM and be done with it.Optima isn’t nearly as good
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Old 03-15-2019, 02:16 PM
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Not a sailboat. Pretty lightweight.
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Old 03-16-2019, 04:12 AM
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DO the 27m agm , worth the few dollars more . There are only a few manufactures of 27m agm's and all are good .
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Old 03-16-2019, 07:24 AM
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Consider duracel AGMs from Sams Club. Relabeled Interstate IIRC. Usually the best value around. Lots of folks on here use them.

If it fits and the weight can be supported, bigger is better in my book.

Edit: Yandina appears to be a small shop. The guy there is very responsive and knowledgeable. Find his # and discuss your application perhaps.
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Old 03-16-2019, 08:42 AM
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Originally Posted by NEBassMan View Post
Consider duracel AGMs from Sams Club. Relabeled Interstate IIRC.
East Penn Manufacturing has an exclusive agreement with Duracell (part of the Procter & Gamble Company)
to release batteries branded under the Duracell name.

"Interstate" does not manufacture batteries - every battery they sell is "relabeled" -
most of them made by Johnson Controls
(largest producer of lead-acid automotive batteries in the world)
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Old 03-16-2019, 09:09 AM
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I stand corrected. I must be slipping. Are Duracell AGMs at Sams the same as another, more expense, brand you know of?
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Old 03-16-2019, 09:18 AM
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Duracell Marine Battery Sale at Sam's Club

Originally Posted by ALL OUT View Post
They are the exact same battery as the Deka AGM. Just different stickers. Also Sam’s give a 18 month free replacement and Deka only 12 months.
Originally Posted by rjbergen View Post
This is true. I confirmed that with the Deka customer service rep today.
​​​​​​​
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Old 03-16-2019, 09:34 AM
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Hate it when ppl refuse to use search and ask the same questions over an over.
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Old 03-16-2019, 07:05 PM
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Originally Posted by NEBassMan View Post
I stand corrected. I must be slipping. Are Duracell AGMs at Sams the same as another, more expense, brand you know of?
deka
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