Forum Discussion
4gnomad
May 23, 2016Explorer
Wow, that was quick. I'm not sure of the converter yet, but I'm willing to replace it. In terms of the 33A that I can produce on my own (solar) that's 4 100W panels on the roof + a (theoretical as I haven't installed solar yet) MPPT controller.
Each battery is 100lb - actually more manageable than I expected. We'll see how they perform.
So it sounds like if I connect to 30A 120V shore power for a full day for a recharge (with a sufficient converter) I'll be fine in terms of preventing sulfation, but if I'm just recharging from solar at 33A, 12V I'll just be at .0825CA which will generally be undercharging the pair, right? That's my main concern, I was planning to go to 25% DOD on these so they would last forever, but if I'm killing them by only charging at .0825CA anyway I might as well not install solar and just rely on hooking up to shore power at a park. Is there some rule of thumb that describes how frequently you need a faster charge to keep things mixed up? Every time, every 5 cycles, every 10? I guess given that there are enough amps coming in with shore power it's the frequency of desulfation I need to figure out. I'll see if that's a phrase Google knows. :)
Each battery is 100lb - actually more manageable than I expected. We'll see how they perform.
So it sounds like if I connect to 30A 120V shore power for a full day for a recharge (with a sufficient converter) I'll be fine in terms of preventing sulfation, but if I'm just recharging from solar at 33A, 12V I'll just be at .0825CA which will generally be undercharging the pair, right? That's my main concern, I was planning to go to 25% DOD on these so they would last forever, but if I'm killing them by only charging at .0825CA anyway I might as well not install solar and just rely on hooking up to shore power at a park. Is there some rule of thumb that describes how frequently you need a faster charge to keep things mixed up? Every time, every 5 cycles, every 10? I guess given that there are enough amps coming in with shore power it's the frequency of desulfation I need to figure out. I'll see if that's a phrase Google knows. :)
About Motorhome Group
38,707 PostsLatest Activity: Feb 28, 2025