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So in that configuration you mentioned, I would need two 4s BMS's? If I did the single bank, one 8s BMS with each lead going to two cells, correct? I ask because I already ordered an 8s BMS from OverKill.

Hello Everyone, I'm trying to figure out how to wire an 80A 12VDC solenoid for a Lippert RV leveling system. I'm switching to 24V and have the step down converter for everything else. However, that is only a 40A converter and I don't see how it can run an 80A with 2 Gauge wire. The fuse says 80A...

Good to know. I thought I remembered hearing that for RV usage, you didn't want to go that high. However, I don't recall at all where I read that on here or who said it.

Yes, on this set. I didn't do a very good job on the first set though, but I'll hook them back up and make note of the results in order to match them up.

I have it as a Numbers file for Mac. However, I can export it to Excel, CSV, or TSV if you'd like.

Thank you 12volt. Yes, it is a big fridge at 18cuft. The brand is Hisense and I'm not sure how they compare to other's of similar size. I'd have a hard time convincing the wife to get a smaller one considering we're full time. That might just be one of those sacrifices I have to make and bight...

Ok, so once I am able to get to a campground and get a full charge, then it'll stop showing up as zero? To be completely honest, I'm not really sure what my parameters are supposed to be on all these settings. I'll see about changing this though.

I’ll check the breakers and fuses in the morning. I was stupid and buttoned everything up before checking the generator.

So is it normal for one of the cells to spike once everything gets to the 3.400 mark? As things are charging in series, I'm within a .004 differential between cells. Then all of a sudden one spikes to 3.650 with a .149 differential.

Looks like I ordered the 100a BMS. Here is what my system looks like, tell me if I'm on the right track... - 4 * 405w panels = 1620w - 16 cells (lets say 280ah, still debating over these or the 304's) wired 8 in series * 2 and then the two in parallel for a total of 560ah in 24v Is this...

I'm charging them in series with 8 cells in 8S. - With the first batch, cell six was the runaway and tripped the BMS. I put them in parallel and then took them up to 3.615 before taking them off to settle. - With the second batch, it is cell three that's the runaway. I am getting ready to put...

I got to 3.615V and took off the power supply. I'll let this sit in parallel over night and then work on the second set of eight. I saw a video where someone did the same, charging in different sets of eight, and then he went in and pulled a cell from one set and then one from the other set to...

I’ll be running 1620w of solar at 24v. I’d like to have a 3000w inverter. Is that the details needed? Budget isn’t a huge concern, but within reason. I don’t want a $1300 system when a $500 will work perfectly fine. I’m not necessarily looking for the cheapest thing possible neither.

I’ve looked at that one, I was just hoping to have it sooner than the end of June. How about that MPP? It’s only a 2400w inverter, but that may work, or should one hold out for a 3k unit? Obviously it depends on my consumption, but is there a big difference?

Sorry, I thought that was coveredin an earlier post. I’ve ordered 8 Lishen cells from Michael Caro’s group buy. Once those come in, I’ll have 272ah in 24v configuration.

Great! I will review this when my head is clear. LOL! Thank you both!

Which panels are you referencing? I haven't seen any square 250W panels. I just watched the shoot out that @Will Prowse did with Renogy, NewPowa, HQST, and another that I can't remember. Being in AZ, I was thinking of getting some SanTanSolar T-series panels. However, I'm open to suggestions.

Yes, that is the one.

How does that work if the manual breaker is an 80A? My smaller slides are cable driven and the main slide is gear driven, so I guessed this was to power the leveling system, but I’m not exactly sure. I’ll start searching for a larger converter. Ugh.

Because I don’t know what I’m doing. Lol. The one set is for driving the 12v side of the RV. The other set goes to the generator. To be honest, I don’t know why that’s needed other than it was attached to my old battery. I assume it’s to start the generator. Don’t quote me on that though.

So I'll need another BMS for this setup? I only have one right now.

So...should I be looking at making four batteries, 4 cells each. Then, put two of them in series, the other two in series, then finally the two sets into parallel? If so, how does the BMS come into play being that I have an 8s 100a from OverKill? Do I need to buy another one?

Hello Everyone, Let me start out by saying I'm a noob, so be gentle. I have my 16 LIFEPo4 all top balanced and ready to finally get my system installed. Here are the particulars: Solar Panels will be 2s2p @ 1640W / 84V / 19.3A Battery will be 8s2p @ 24V / 560Ah Overkill 8s 100A BMS x 2 MPP...

I just hooked up the AC Input to the MPP and the low battery is charging. I’ll let it go as long as I can and then shut the batteries off for the week while I’m gone and just let the RV fridge be powered by the AC power. Maybe I just need to get the SOC closer and then they’ll stay together. At...

Well, I already bought a hybrid inverter and all the other components for a 24v system. I'm just trying to learn as I go and asked questions along the way. This suggestion never came up, so here I am. LOL.

This initial set up and charge were just random cells as they came out of the boxes. I was going to use your suggestion of arrangement once I had both sets top balanced.

Thank you for the suggestion. Yes, I should have room to do a ground array as well. I've thought about getting 3-4 of the larger 450w panels for the ground and avoid the roof entirely. I'm not concerned about charging while on the move. However, I'm just concerned with leaving the panels out...

Ahhh, ok. So I'm good taking it to the first cell hitting 3.650 and then switching to parallel and taking the pack to 3.615?

The cells that you were eluding to (3,4,8,6) are from the second batch. So they are now labeled K,L,N,P.

Bingo, that's the one. Hopefully I can find out these details prior to hooking it up. I'll review the owner's manual again to see what I can find out.

Thank you @Stephen123, I know where the breaker box is. However, that’s protection to the appliance. I was looking to add protection to the inverter itself.

I am a 24v guy and have a fifth wheel trailer. Hahaha. Yeah, the group for cells was frustrating trying to keep up. I appreciate everyones help though! The inverter I have is 2400w, so maybe I'll order another BMS just to be safe. So I would need two 8s BMS's? What happens if I try to make due...