Cable Requirements for PD4655 Converter
I have the infamous WFCO 8955 converter in my toy hauler. Considering upgrading to a PD4655 to reduce my battery charge times. I have approx. 8-10 feet of 6 gauge cable that runs from my battery...
Forum Discussion
The answer to your last question is you are not going to cut your charging time in half.
In your particular case, adding a second group 24 battery will double your usage time for both batteries to 20%. Better yet, the current usage time would drag the pair to 40%soc. Much better for battery life. Your current one is headed to an early demise.
Checking out how well a second battery will work is simple. Just put it on the ground near the first battery and connect them in parallel with a set of jumper-cables. Only need to connect for usage, or charging.
You will most likely find that your current charger can charge both batteries in only about 25% more time than spent on the one. I suspect you will find a higher maximum amp reading (from clamp-ammeter) since your battery-bank needing charging doubled in size.
A heavier gauge cable would add further improvement, but this can work for you. I used a second battery this way for a few years before trading for a trailer that had a 2-battery storage area.
In your particular case, adding a second group 24 battery will double your usage time for both batteries to 20%. Better yet, the current usage time would drag the pair to 40%soc. Much better for battery life. Your current one is headed to an early demise.
Checking out how well a second battery will work is simple. Just put it on the ground near the first battery and connect them in parallel with a set of jumper-cables. Only need to connect for usage, or charging.
You will most likely find that your current charger can charge both batteries in only about 25% more time than spent on the one. I suspect you will find a higher maximum amp reading (from clamp-ammeter) since your battery-bank needing charging doubled in size.
A heavier gauge cable would add further improvement, but this can work for you. I used a second battery this way for a few years before trading for a trailer that had a 2-battery storage area.
