At present I have 2 27 12 volt series battery's in the coach. If boon-docking I can only get about 3 days of lights only. I need to replace the battery's this year and was wondering if it would be advantages to go to 2 6 volt.
Rodger & Teri
1985 Sportcoach / crosscountry
1983 Camaro / 1971 Chevy 4x4
chessie's named sonny & choc and a red setter named star
As a rule of thumb, six volt batteries will tolerate charging and discharging much better than 12 volt batteries because the individual cells are larger. Each cell produces 2 volts, no matter how large. So, a larger cell can have thicker plates that are more tolerant than thin plates. So, a six volt battery will have three cells while a twelve volt battery will have six cells, but both are the same overall size.
Holiday Rambler Navigator DP, Hummer, and Honda VT1100C Shadow
Fishinghat gave you a great answer. I recently changed from (3) twelve volt SRM 429 Interstates to (4) Costco Golf cart 6V batteries. I've owned six volters before and I think it's a great way to go. The topic's been discussed several times before and for the most part, the 6 Volt boys always win. I'm certainly not saying 12V ones are not good, it just seems that the longevity of 6 V units while camping outlast the 12V ones consistantly.
The Costco ones are the 220 AH ones that are very close to the infamous Trojan T-105s. Sams club has a great deal on them too. The wiring side is a piece of cake, even if you could possibly fit (4) six volts in there. Just a thought here. Hope it goes well.
Scott and Karla SDFD RETIRED
2004 Itasca Horizon, 36GD Slate Blue 330 CAT
2011 GMC Sierra 1500 Ext Cab 4x4 Toad 2008 Caliente Red LVL II GL 1800 Goldwing KI60ND
There are plenty of 12v batteries with plates as large or larger than a 220 ah golf cart battery. You can try 4 and 8D batteries. They are big though, think 2 golf cart batteries glued together! You have to compare apples to apples with battery size.
DW and 2 dogs
2011 Ford F350 Dually LB 4x4 CC 6.7 diesel
2007 Grand Junction 35TMS
Peterson 37(just sold) T-37 R/C Sailboat at home