Rich,
Please do send around a diagram. I’m planning to do something similar —
a 27 starting battery (as battery #2) and a 31 house bank (as battery#1).
When I want to start and run the engine, I will do so on ALL. That way
the alternator will charge both batteries. When sailing and “hanging out”, I
would switch to 1 only.
I have a solar panel and a dual battery regulator, which would connect
to both.
Two weeks to launch and still much to do…..
All the best,
Edd
Edd M. Schillay
Starship Enterprise
C&C 37+ | Sail No: NCC-1701-B
City Island, NY
Starship Enterprise's Captain's Log
On May 5, 2014, at 10:38 AM, Rich Knowles via CnC-List <[email protected]>
wrote:
> The best method I have found and the least problematic from all points of
> view is to have a dedicated starting battery that does nothing else but start
> the engine, and a house battery that can be several batteries in parallel.
> Ideally the house batteries will all be identical. I feed the alternator
> directly to the house battery and use a device such as a Xantrex EchoCharge,
> a small regulator, to keep the start battery charged. A simple 1/both/2 off
> switch feeds the house load from either battery and acts as a combiner switch
> if needed. I have a diagram I can send you if you wish.
>
> I have wired many boats this way with no complaints or incidents.
>
> Rich Knowles
> Indigo. LF38
> Halifax. NS
>
> On May 5, 2014, at 10:47, via CnC-List <[email protected]> wrote:
>
>> In a pinch, I recently bought a 'starting' battery (Group 27) per my earlier
>> post (no marine stores open after 6 on Saturdays)
>>
>> Then I decided to get a replacement for my dead Lifeline AGM battery.
>>
>> Of course, Murphy lurking about, I realized that my Zantrex Truecharge 40
>> wants all the batteries it charges to be the same since
>> its charging schemes apply to all three outputs to the batteries.
>>
>> Before I pull the 'rope-a-dope' of returning the starting battery, I need
>> some list advice:
>>
>> A lot of sailors suggest using a 'starting' battery exclusively for starting
>> and using the house batteries for the house. I am aware that
>> an AGM can be used for starting as well.
>>
>> However, if a 'starting' battery is better for this job (CCA, etc.) and the
>> AGM is better for its job, how does one use a single charger like mine
>> to satisfy different charging schemes?
>>
>> 2 chargers, a smarter charger that has outputs for different battery
>> characteristics, or 'forgetaboutit" and charge both batteries as though
>> the were both AGMs?
>>
>> Charlie Nelson
>> Water Phantom
>> C&C 36 XL/kcb
>>
>> [email protected]
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