[Public-List] Charging a battery on a mooring

[Jeffrey]

We too keep our boat on a mooring, not set up for shore power at all.  I
have a small 10 watt solar panel I put out only when we leave the boat and
have never had a problem.   We also don't have much that uses up amps
either.  VHF radio and some lights we use sparingly The boat is quite tight
so the bilge pumps don't even run that often.   It works for us.


jeff

Jeffrey Fongemie

Seagrass
Alberg 30 #116
Boothbay Harbor Maine




On Tue, Apr 15, 2014 at 9:12 AM, John Riley <jriley at dsbscience.com> wrote:

> Is this just for replacing self-discharge of  flooded batteries, or actual
> energy use?  If the latter, what's your energy budget aboard?
>
> The answers to those questions will determine how large a panel you need.
>  With a tight enough energy budget, a small panel is more than adequate.
>
> I kept my boat at anchor for 18 months...never touched shore power in that
> time and only light charging from an outboard occasionally ... maintained
> batts with only one of those little 5W maintainer panels.
>
> I have a friend that cruised the better part of a year and a half with a
> 35 W panel, and only plugged into shore power once (if I recall correctly)
> and he had no engine charging at all.
>
> On the other end of the spectrum, I have some other friends that have a
> cruising cat with I think 4 135 W panels.
>
> It's all about "needs."  There is no single "right" answer.  What works
> for us may be completely unacceptable to you.
>
>
> On 04/14/2014 09:43 PM, Amy & David Swanson wrote:
>
>> Looks like we may have our boat on a mooring for a while, which is a new
>> experience for us.  How do you folks who do this keep your batteries
>> charged?  I was assuming that the alternator will help bulk charge it, and
>> I am thinking of getting a small solar panel (30 watts or so) with a good
>> controller, and mounting it in the stern rail so that I can tilt it down
>> flat when sailing.  Any thoughts, or suggestions?
>>
>> Thanks!
>>
>> David Swanson
>> Strayaway Child
>> Alberg 30 #229
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> --
> John S. Riley
> S/V Gaelic Sea
> 1972 Alberg 30 #521
>
>
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Jeffrey Fongemie

<http://instagram.com/jfongemie>

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