Keystone RV Forums - View Single Post - Existing "New" 12V. Add 2 6v or 2 12V to get 3

WanderOne · 03-10-2018, 10:07 PM

Hi,

I have a new Cougar 25RES 5w and want to add solar for boondocking this summer.

I have a new Interstate 12V 27 series that came with it.

I am thinking about a few options.

1) Add 2 Trojan 6V batts and keep on separate system. Then use Trojans 6v as primary and have switch for existing 12V for backup. Not sure about charging config with two different banks.

2) Add 2 more matching 12V Interstates Batts to the existing and have 3 12v batts system.

3) Just dump the 12V. and Use 2 6V Trojans for system (as I have read that 2 6V can be as stronger than 2 12V? But would they be better than 3 12V?

At the end of the day I am wanting to have 300W Solar system on roof, and Pure Sine Inverter maybe 2000Watts.

What would experienced Solar Boondockers opt for?

03-10-2018, 10:07 PM	#1
WanderOne Member Join Date: Feb 2018 Location: TEMECULA Posts: 34	Existing "New" 12V. Add 2 6v or 2 12V to get 3 Hi, I have a new Cougar 25RES 5w and want to add solar for boondocking this summer. I have a new Interstate 12V 27 series that came with it. I am thinking about a few options. 1) Add 2 Trojan 6V batts and keep on separate system. Then use Trojans 6v as primary and have switch for existing 12V for backup. Not sure about charging config with two different banks. 2) Add 2 more matching 12V Interstates Batts to the existing and have 3 12v batts system. 3) Just dump the 12V. and Use 2 6V Trojans for system (as I have read that 2 6V can be as stronger than 2 12V? But would they be better than 3 12V? At the end of the day I am wanting to have 300W Solar system on roof, and Pure Sine Inverter maybe 2000Watts. What would experienced Solar Boondockers opt for?