William:
At lot of people use 6 volt in series and parallel configurations. But, I never like the idea because of the additional connections required which makes for more potential failure points. But, that's just my personal feelings on it.
As far as battery choice my life has gotten easier since I started using AGM and Gels on board. No longer have to carry or find distilled water when on a cruise for the batteries. No more acid burned holes in my clothes either. AGMs are a little more expensive but, they allow for more boat time and less maintanence. I like that. If you go with flooded lead acid you will need to install them in a sealed battery box too.
The Dual Pro charger is a nice unit. But, since it is four smart chargers I don't know about paralleling two outputs. You might want to check with the Dual Pro people just to make sure there is no interaction with the charging electronics. But, if they say it's ok I'd stick with the Dual Pro and 12 volt batteries just to make things easier. Anyway that's my two cents.
Capt. Mike
From: william <wmunger@programmer.net>
To: electricboats@yahoogroups.com
Sent: Friday, April 6, 2012 5:21 PM
Subject: [Electric Boats] sailboat house battery bank questions
To: electricboats@yahoogroups.com
Sent: Friday, April 6, 2012 5:21 PM
Subject: [Electric Boats] sailboat house battery bank questions
Hello all,
I am in the research stage of a complete dc / ac rewire of my 1978 33' hunter.
On the subject of House battery bank my thoughts are this
Plan A:
using 4 6volt batteries to wire up as 2 12volt banks.
Looking at either:
Deka 8AGC2 AGM, 6volt, 200AHr, C/100 220AHr, 68lbs, $225each
or
Trogen T-105 lead acid, 6volt, 225AHr, 62lbs, $140each
I think I would rather have AGM because of these being located under a berth, am I being too cautious on hydrogen gas and spillage? The Price difference is large but I think it may be worth not having to deal with venting and spillage concerns.
I plan to have 12V lights, navigation, radios, computers, lcd/tv, pressure water pump, black water pump, refrigerator, microwave, and maybe AC. (I know 12v AC sounds pie in the sky)
One of my issues is this, I have a DualPro 4 bank charger (4x15amp). As far as I can tell I can not use 1 charger bank for each battery because the charger is designed for 12V batteries. I think I can use 2 legs of the charger to charge 2 6V batteries that are wired up to be 12volts. Am I correct in this or would it be better to sell the DualPro and get 4 chargers designed for 6 volt batteries?
Plan B:
using 2 big 12volt batteries such as:
Deka 8D AGM 12volt, 245AHr, 158lbs, $400each
Then I could use my current DualPro set up with 2 legs going to each battery giving 30amps of charging to each 8D.
Plan B may be headache but I dread the thought of fighting to get two 160lb batteries in place inside the boat. Also, if I go with the 6volt plan I could expand my "tank" by replacing the smaller Deka 8AGC2 with these larger ones:
US AGM L16 6volt, 390AHr, 123lbs, $500each (same footprint just taller).
Which would almost double my available storage.
Any one with real world advice on any of this?
Links:
http://www.civicsolar.com/product/mk-deka-batteries-8agc2
http://www.civicsolar.com/product/trojan-battery-company-420-0094
http://www.atbatt.com/product/24128.asp
http://www.civicsolar.com/product/mk-deka-batteries-8a8dltp
I am in the research stage of a complete dc / ac rewire of my 1978 33' hunter.
On the subject of House battery bank my thoughts are this
Plan A:
using 4 6volt batteries to wire up as 2 12volt banks.
Looking at either:
Deka 8AGC2 AGM, 6volt, 200AHr, C/100 220AHr, 68lbs, $225each
or
Trogen T-105 lead acid, 6volt, 225AHr, 62lbs, $140each
I think I would rather have AGM because of these being located under a berth, am I being too cautious on hydrogen gas and spillage? The Price difference is large but I think it may be worth not having to deal with venting and spillage concerns.
I plan to have 12V lights, navigation, radios, computers, lcd/tv, pressure water pump, black water pump, refrigerator, microwave, and maybe AC. (I know 12v AC sounds pie in the sky)
One of my issues is this, I have a DualPro 4 bank charger (4x15amp). As far as I can tell I can not use 1 charger bank for each battery because the charger is designed for 12V batteries. I think I can use 2 legs of the charger to charge 2 6V batteries that are wired up to be 12volts. Am I correct in this or would it be better to sell the DualPro and get 4 chargers designed for 6 volt batteries?
Plan B:
using 2 big 12volt batteries such as:
Deka 8D AGM 12volt, 245AHr, 158lbs, $400each
Then I could use my current DualPro set up with 2 legs going to each battery giving 30amps of charging to each 8D.
Plan B may be headache but I dread the thought of fighting to get two 160lb batteries in place inside the boat. Also, if I go with the 6volt plan I could expand my "tank" by replacing the smaller Deka 8AGC2 with these larger ones:
US AGM L16 6volt, 390AHr, 123lbs, $500each (same footprint just taller).
Which would almost double my available storage.
Any one with real world advice on any of this?
Links:
http://www.civicsolar.com/product/mk-deka-batteries-8agc2
http://www.civicsolar.com/product/trojan-battery-company-420-0094
http://www.atbatt.com/product/24128.asp
http://www.civicsolar.com/product/mk-deka-batteries-8a8dltp
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