Battery price question...
It's time to replace the single 12V we have on our trailer. We do boondock from time to time so I have been reading a lot on these forums about 6V vs 12V. My question here is, where are these inexpe...
Forum Discussion
pianotuna wrote:mr_andyj wrote:
I cannot think of a single reason to use two 12 vs 2 6's.
High draw of 200 amps works much better on twin 12 volt batteries. I use a 3000 watt inverter, and I push it hard.
One of the issues is most folks skimp on the interconnect cables on 6V batteries, using too light of a ga of wire results in a pretty high voltage drop across that interconnect.
If you used standard automotive size cables as interconnects that is where the issue is. Typical automotive cables are 4 ga at best like THESE..
You might find some in 2 ga but 4 ga will be more common.
I used 1/0 wire as an interconnect and I have no issues with heavy startup surge loads from my home fridge conversion on the GC2 batteries even when the batteries are at 50% DOD.
The interconnect cable becomes part of the batteries "internal resistance" and the GC2s often get a bad rap for having a high internal resistance and some of that is most likely from using to low of a ga of interconnecting jumpers.
GC2s are a pretty darn hardy battery, they have to be as they were designed to be used all day on golf courses and that may mean more than 12hrs per day per charge so they tend to get worked extremely hard and deeply discharged but yet stand up to a full "season" of golfers..
