2 Titan 6V Batteries- 45amp or 60amp Converter?

[IBArgosy]

In my '74 Argosy 26, I am replacing the Univolt and single 12v 24 series battery with 2 6v Titan t-105's and new converter. The question is, do I get the 60amp or 45 amp converter? I know I will also need a new fuse box, which I will order.

[DKB_SATX]

From the point of view of your converter you're just looking at a 105 amp-hour battery bank, so I think a 45a will do it (and will run off a 1000w generator in a pinch).

If memory serves you never want to charge at more than 25% of the total amp-hour capacity, so for 105 AH that's just over 26A, leaving quite a bit of capacity for trailer loads with a 45A converter.

Now, if you're still running all-incandescent lights in the Argosy you may have enough load with all the lights on to make use of the extra headroom of the 60a when charging and running most of the loads inside the trailer simultaneously.