Thor Forums

[Chance]

Actually, 2-Volt batteries make a lot of sense under the right conditions. There’s a reason they are manufactured, even though not normally used in RVs.

If the desired amount of energy storage is rather high, as in very high, and one doesn’t want to have to handle huge batteries weighing 100 pounds or more, then why not.

Of course, that applies only to 12-Volt electrical systems, “AND” if we limit the installation to no more than 2 parallel strings which is recommended by many experts.

With 12V batteries the “recommended” maximum is therefore 2 in parallel, and with 6V batteries a total of 4 (parallel and series), but with 2-Volt batteries, each string is made up of 6 batteries, with a total of 12 batteries possible (while not exceeding 2 strings). For a very high capacity system, having 6 or 12 batteries allows each battery to be lighter. And if flooded, less cells to check water on.

Before lithium became more common, I looked at 2-Volt batteries as the best way to run my air conditioner through the night using AGM batteries. Even if I could break it up into 6 or 12 smaller batteries, total weight was still higher than I was willing to accept. Instead, I purchased a generator and somewhat regret not experimenting with batteries.