Recent content by Firetodd

Read this thread: https://diysolarforum.com/posts/275027/

Rebuilt box with everything contained

Battery is being rebuilt and upgraded:

The multiplus II is amazing and powers both legs. But for me, the simplicity of a one box does it all was a big plus. I did add the Victron 48/12 converter to charge my “house” lead acid battery. If money was no object Victron is top notch. But I love my LV 6548!

Yes, the MPP LV 6548 has two separate charge controllers. So I have PV2 connected to the roof port which is wired 3s2p and provides 2100 watts. PV1 is connected to a pigtail. When I get to the lake, I pull the cord out and connect to the 4s panels on the patio and add 1400 watts.

That is what I was planning on doing when I'm there. The problem is when I am not there.

Argh... My LV 6548 needs at least 90 volts. MPPT range is 90-230. So i have a narrow window of 90-115...

I guess I’ll either take a panel off the patio, or ask him if we can put some panels on his camper….

I guess I cant just use the 4th panels as-is. What are my options? Hmm

My panels list a VMP of 38.9 with a VOC of 46.7, so a series of 4 would be VMP of 155.6 and VOC of 186.8 !! But that doesn’t jive with real world numbers I’m seeing on my MPP LV6548. PV1 Input is the 4s configuration on the patio. PV Input 2 is the 3s2p on my camper.

Last year the forum assisted me in setting up a solar system for new 5th wheel. It works great and was able to power both my 5th wheel and my father-in-law's 5th wheel! So now I am building him a system, but we will not be adding solar panels... Here is the background, before I get to the...

I put 6 350 watt panels on the roof of the 5th wheel and 4 350 panels on a patio at my lake site.

I built a 48v 280ah battery, paired it with a MPP LV6548 inverter, and it to a sub panel in my 5th wheel. I left the rv electrical system in place, and plug the camper into the solar set up. I then added a Victron 48/12 converter to keep the existing lead acids house batteries charged. 3500...

I guess AliExpress has some. I’m just wishing they would say how long the cables are. Anyone else have this issue?

Or do I just extend the wires….