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 ________________________________ 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 2nd 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.
