[C320-list] Protecting The Batteries when away from boat at dock

[Chris Burti]

I can't speak to the technical aspects, but can offer some personal
experience. On at least two occasions in the last 11 years some $&%$
has disconnected our shore power cord and it didn't toast the batteries
or the compressor. It may have contributed to only getting seven years
out of the original pair, but I place the blame for that on the OEM
charger and the lightning that blessedly took it out.

Thanks, Chris BurtiFrom: Arthur Miller
Sent: ‎7/‎4/‎2014 4:19 PM
To: C320-List at Catalina320.com
Cc: <C320-List at Catalina320.com>
Subject: Re: [C320-list] Protecting The Batteries when away from boat
at dock
As I recall my AB shuts down if voltage drops below 12.1v.
Also isn't a battery pretty much Fully discharged At approx. 11.9.
Art.  # 680

Sent from my iPad

On Jul 4, 2014, at 4:02 PM, "Jeff Hare" <catalina at thehares.com> wrote:

> :)  10.4v is a dead battery.  :)  Cutout should be a volt above that at
> least.
>
> -Jeff
>
> -----Original Message-----
> From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On Behalf
> Of Warren Updike
> Sent: Friday, July 4, 2014 3:34 PM
> To: C320-List at Catalina320.com
> Subject: Re: [C320-list] Protecting The Batteries when away from boat at
> dock
>
> Cutting out at 10.4V isn't necessarily saving the battery especially if the
> battery sits discharged for days. The longer a battery remains in a fully
> discharged state the more damage is done.
>
> -----Original Message-----
> From: guyhenry222 at gmail.com [mailto:guyhenry222 at gmail.com]
> Sent: Friday, July 04, 2014 12:25 PM
> To: c320-list at catalina320.com
> Subject: Re: [C320-list] Protecting The Batteries when away from boat at
> dock
>
> The Adler/Barbour fridge on my 1994 automatically cuts out if the voltage
> goes under 10.4V
>
> Guy
> MoonShadow
> #115
>
>
> -----Original Message-----
> From: Ken Geiger
> Sent: Thursday, July 03, 2014 4:55 PM
> To: c320-list at catalina320.com
> Subject: [C320-list] Protecting The Batteries when away from boat at dock
>
> In the Flooded Battery Thread, Warren mentioned a devise to sense low
> battery and then disconnect the load (the reefer).
>  I quote;
>
> "For those who leave refer running while away from boat, there is a device
> that will sense State of Charge and disconnect a load (refer.) This avoids
> running a good battery into the ground (below 11 V) should shore power be
> lost (a sure way to shorten your battery's life.) Jeff Hare can say more
> about this device."
>
> I wonder if one could protect the batteries while leaving the reefer on when
>
> at dock and away, by paralleling in a
> 110 V relay coil with the parallel 12 V to the reefer on a set of contacts.
> The coil would drop out and open the
> power supply to the reefer upon AC power loss thus prevent draining the
> battery.
>
> The Reefer switch on the panel would be in the off position and the battery
> main switch on, supplying the parallel 12 V circuit to the reefer through
> the relay contacts.
>
> Ken Geiger
> Northern Dream, 2000 #765
>
>
>
>