On Nemesis we have modern upgrade to the age old Perko switch. We have
the 24 hour circuits wired to the Bilge pump and the Fridge. The other
two are the house circuit and a spare (radio power someday perhaps).
The starting battery is maintained through the now mandatory ELI
breaker which has a bypass breaker to a marine charger just for the
engine bat. The house bank gets charged through the inverter while at
the dock. No fried diodes, simple operation, top circuit protection.
When the engine is running everyone gets their share of juice through
the ACR charging relay.
This is the way your RV should have been wired when delivered ....Well
the Bilge circuit should have been replaced with the Nest maybe.
Doug Robinson, s/v Nemesis
https://www.bluesea.com/products/8686/Dual_Battery_Bank_Management_Panel
https://www.bluesea.com/products/7610/SI-ACR_Automatic_Charging_Relay_-_12_24V_DC_120A
On 7/4/22 11:55, Korbey Hunt via CnC-List wrote:
I have same in my 34 C&C. 2 batts for house and one for start. With
a 1, 2 all switch you can use the house bank (1) on the hook and know
the start bank (2) is isolated. Switch to all when the engine is
started and all 3 batts will charge. I bought a Noco sealed 10 amp
charger for the dock. I do not have any high use appliances. I do
have a 1200 watt inverter wired direct to the house bank. It is
sometimes used for coffee grinder.
Get Outlook for Android <https://aka.ms/AAb9ysg>
------------------------------------------------------------------------
*From:* Neil Andersen via CnC-List <cnc-list@cnc-list.com>
*Sent:* Monday, July 4, 2022 8:35:32 AM
*To:* Stus-List <cnc-list@cnc-list.com>
*Cc:* Jeffrey A. Laman <jlam...@outlook.com>; Neil Andersen
<neil.eric.ander...@gmail.com>
*Subject:* Stus-List Re: Adding a second house battery
If you “separate” the batteries with a 1-2-ALL switch like we have on
our boats, you can control which battery gets used. If you have only
drawn from one battery, your recharge time will be like it is now.
Neil Andersen, W3NEA
Rock Hall, MD 21661
484-354-8800
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*From:* Jeffrey A. Laman via CnC-List <cnc-list@cnc-list.com>
*Sent:* Monday, July 4, 2022 10:18:24 AM
*To:* cnc-list@cnc-list.com <cnc-list@cnc-list.com>
*Cc:* Jeffrey A. Laman <jlam...@outlook.com>
*Subject:* Stus-List Re: Adding a second house battery
This is how my C&C34 is set up and how it came when I bought it. I
added charger, with 2 bank capacity. One side of the charger gets the
two house, and the other side of the charger goes to start. Works
fine. But, as noted, charging the house takes a longer. I have
debated whether to do away with the 2^nd house battery since the boat
does not consume that much power -- instruments and auto pilot. All
lights are LED now. Stereo use is at dock only.
Jeff Laman
81 C&C34 "Harmony"
Ludington, MI
------------------------------------------------------------------------
*From:* Jeff Nelson via CnC-List <cnc-list@cnc-list.com>
*Sent:* Monday, July 4, 2022 10:13 AM
*To:* cnc-list@cnc-list.com <cnc-list@cnc-list.com>
*Cc:* Jeff Nelson <jhnelso...@gmail.com>
*Subject:* Stus-List Re: Adding a second house battery
Assuming you simply want to double your storage capacity, put the
batteries side by side, wire positive to positive and
negative to negative. You now have 12 volts with 2ce the ampacity.
Others may offer some advice on charging...but
I think you should be reasonably ok, except it will take a bunch
longer to charge as you have 2ce the capacity that you
need to fill.
On 2022-07-04 10:41, Hoyt, Mike via CnC-List wrote:
Actually is for an RV but I can think of no better place to get
answer to this type of question than this list.
Came with one group 27 deep cycle battery. Wish to add a second and
have been told that nothing needs to change re the charging systems,
etc … What is involved in adding a second group 27 battery?
Thanks
Mike Hoyt
Persistence
Halifax, NS
--
Cheers,
Jeff Nelson
Muir Caileag
C&C 30 - 549
Armdale Y.C.
