Winterizing batteries. Yeah, getting WAY ahead of myself here...

[Davidasailor26]

@Davidasailor26, it's in... super easy installation. I had almost no wiggle room for the DC lines, so the Pro Charge Ultra Lite is squeezed a bit farther forward (to the right in the photo) than I would have liked. Those DC lines are also the minimum AWG recommended for the charger... since one of the reasons for the upgrade was to increase the charger output to the two new G31 house batteries, I could replace the charger output cables with something larger. OTOH, with the solar also providing current, the increased capacity from the Pro Charge Ultra Lite is more of a contingency than necessity, what do you think?

View attachment 183947

Looks good. Thanks for showing it in-place. Where do the charge wires connect? On the 37 they go to the battery switches, which are pretty much right next to the charger. Looks like the manual says to use minimum 10 AWG for runs up to 1 meter. The way the 37 is wired that run is probably less than 2’, so I would be comfortable with the minimum, especially given that the charger won’t be going 100% all that often like you said (although it certainly will sometimes, if the batteries are sufficiently discharged and/or there’s not much sun).

 

[dlochner]

@Davidasailor26, it's in... super easy installation. I had almost no wiggle room for the DC lines, so the Pro Charge Ultra Lite is squeezed a bit farther forward (to the right in the photo) than I would have liked. Those DC lines are also the minimum AWG recommended for the charger... since one of the reasons for the upgrade was to increase the charger output to the two new G31 house batteries, I could replace the charger output cables with something larger. OTOH, with the solar also providing current, the increased capacity from the Pro Charge Ultra Lite is more of a contingency than necessity, what do you think?

View attachment 183947

The charger cables should be sized to the output of the charger and the length of a cable. The maximum current that can be produced by your charger is 30 amps. So size the cables for 30 amps at the length of the cable run to reduce voltage drop.

If multiple batteries are connected to the charger, the charger will split the 30 amps between them. It will not put 30 amps into each battery simultaneously.

 

[SoSound]

The charger cables run to the battery switches, just like on the 37, probably only about 2 feet for the longest of the three cables. Could be one of those low priority 'finish up' items on the to-do list. I also have a bit of extra cable from the solar panels that I could trim out, that might even be 8 AWG cable which could be used in this location as well.