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Thank you, that’s kinda what I was thinking. I swapped out the Transfer Switch and the Converter that Heartland sent me to make everyone (but my back) happy that we’re narrowing things down. I ran the generator for 1 hour and set the timer. I went from 12.6v to 10.5v in < 3 minutes. This is why...

A-H = 4.25v I-P = 2.26 Together = 6.11

Well, in analyzing the discharge of both sets, cell D and cell M are losing it the fastest. The margins seem so low, but I'm not an expert on this. So I'm taking three cells from batch one, and five cells from the second batch to make a "theoretically" matched lower capacity batch.

Hey everyone, I have two BMS from Overkill and I’m not a huge fan. They’re always changing their values on me and such. Last time I was on shore power and had a fully charged system, I reset my Victron Shunt. I’m doing great with my consumption and maintaining a full charge every day, weather...

@MisterSandals do you you think it's worthwhile trying to match these cells? I've been watching them over the last three days taking readings in the morning and evening. They don't seem to be drifting too much. However, there is one cell in each group that is lower that the rest. I've changed...

Where is the “charge” voltage? I corrected the cell 100% to 3500. When I topped off and balanced, they were at the 280 mark. At least per the BMS.

As @HRTKD stated, the audit shows 24v as well as my description. I have a close friend who is a commercial electrician and I have a history in electronics as well, albeit, was a long time ago. He doesn't know about solar, but he does know and have the correct tools for all connections to be...

Hey Everyone, I recently brought my solar online and everything finally seems to work…well, not quite. I’m on my first outing and tried turning on the generator with one of my old lead acid batteries since the lithium couldn’t do it. I got the generator to start, but it’s not triggering the...

Ok, I just hit 27.8V and one of the cells tripped for over voltage. The rest were over 3.4V, so it appears that only two of the cells were a bit high. How would you recommend to discharge the two high cells? Or would it be best to just take them off the PS and hook them up in parallel for a day...

Is there some sort of reset I can do for the BMS?

Oops, my formula was off...

I guess time is more of the concern as I have to keep my generator running to do the charge. I was wondering if I had the cells at 3.500 and then balanced them in parallel, doesn't that essentially balance them? I know once my system is all up and running and I haven't blown anything up, it'll...

Yes, I have them hooked up with a BMS and it triggered at 3.650V.

Just did it when I read your comment. I’ll look at the MPP settings when I get back home.

Oh wait, you mean the 280. Maybe 3-4 months ago.

Oops…hadn’t had my coffee yet. Lol! It’s still a mess as I have yet to clean it all up until I have everything working. Note the red cable from negative bus bar, that’ll be replaced with a black.

Thank you. I purchased an MPP LV2424 hybrid unit. I don't recall anywhere in the manual about precharging anything. However, I wasn't really searching for it neither. Mainly have been focused on getting all the components and what will be needed to rewire the whole cabinet as my OCD will not...

That's why we are up on the 260 between near Happy Jack. I don't want to run AC if at all possible since it is ridiculously loud and I would HAVE to run the generator non-stop. As the weather warms up, we are heading to CO, WY, and MT.

Hello Everyone, I purchased four 405w Jinko panels from San Tan Solar last week as well as a MPP LV2424 Hybrid. I am working on designing the rack system and waiting for some cells from Michael Caro, but in the mean time, was wondering if I could utilize this port on the side of my RV with one...

Ok, I went with this approach as it seems the easiest. What's a few more hours on the generator, once these are done and I have 560Ah of battery coupled with 1620W of solar, I shouldn't need to run it again. LOL! That's if I did my math correct and I can avoid places that need A/C!

Ok, I just sanded the terminals and bus bars. Hooked everything back up and I'm still out of whack on three of the cells. I'll work on bringing those down a bit and see what happens. I'll order some oxguard for the final build out. I'm not sure if the lugs are tinned, just what came from Doshan.

A-H = 3.65a I-P = 1.90a Total = 5.88a Vs. A-P = 5.55a

I'll try to bring the high ones down with a load. In the mean time, I'll be getting the balancer over the weekend. Why does @Will Prowse not care so much for the active balancers? Or did I misunderstand him in his balancing video?

It goes to the 24v-12v converter to feed my 12v side of the RV.

How do I look for hotspots, with a thermal scope? Are you meaning literal hot spots?

Hello Everyone, With all the cells repositioned to take advantage of the cells with the slowest rate of discharge paired together and vice versa, I see that there are mainly one cell (D) that has the highest rate of discharge. Do you think these bad boys are ready to build my packs and put into...

We were just there! We spent about 1.5 months on Old Carefree Highway west of Lake Pleasant Pkwy, just up the road from Canyon Speedway. I'm going to look into the fridge to see if there are other options.

Ok, that didn't get any responses. I'll order an OverKill and just wing it.

I guess what I meant was, are there draw backs to using a balancer?

That would’ve been nice.

Hello everyone, First time posting, first time RVer, first time solar, so be gentle. So we live in Arizona (great sun), but we will be traveling a lot, mainly CO, WY, MT, MN, CA, and everything in between. I have a 44' Toy Hauler Fifth Wheel pulled behind an F350 dually. We have three A/C...

Hello Everyone, If all things the same, meaning price and such, is one cell performing better than the other? Both EVE, both new, both balanced, etc. This will be for an RV solar setup, 16 cells at 24v config. TYIA!!!

Hello Everyone, Noob alert. I am building a system for my RV and the last part I’m confused on is the BMS. Here are the details… - 4*405w panels (top 2 in series, bottom 2 in series, then parallel) - 16 lifepo4 280a cells - 24v 2400w hybrid controller I want to achieve a 24v 560a system. Any...

The water takes about 30 minutes to heat for a shower, I could supplement this with either gas, or the generator I suppose. Also, wife has long Latina hair, so yes, it takes a bit too dry. This isn't every day though and it wouldn't be at full blast. So that saves us a bit. I'm still over 400ah...

The one set was put in service earlier in the week, the other just came online yesterday.

Well this post didn’t get much response. However, I wanted to respond in case anyone happens along it in the future… I had the batteries tested and they were both bad. Yes, shocker, I know. I installed the new ones and things definitely seem to be running as they should now. I’m a couple hours...

It’s a negative.

No, I'll be hooking them up to 1620w of solar on the RV. From what I can see, I'll need to set the parameters on the charge controller to keep them between 20-90%. At least that's what I think I remember reading.

Thank you, I’ve done this. It’s actually part of why I don’t like these Overkill BMS’s. They randomly change settings on me. When I do this, it does bump the capacity up a tad, but nowhere near 100%.

Thanks guys! I ordered another BMS from Overkill. I'll have it here before I leave to TX to pick up my cells in a week or so. I'm a bit nervous hooking everything up and making sure the state of charge is the same and all the other technicalities. Is there a good resource that explains in...

Again, the red wire on the negative terminal will be swapped out when the system is functioning as it should.

Has anyone made the provisions that @sunshine_eggo has eluded too?

Is there somewhere that explains this process in detail, such as the resistor and such?

Really? I'm not sure when that would've been. I watch them like a hawk. What makes you say that (so I don't do it again)?

I found an in-line fuse at Grainger that I'll pick up today while I'm in Phoenix. I'll circle back with pics for any future folks.

There wasn't much to change. A charge under temp and a discharge over temp. Not much to what I'm dealing with. I'll be taking the RV down to Phoenix in the next week or so, then I'll get a nice full charge from shore and see how things look then. I just can't make sense of why the Victron shunt...

I'll do this tomorrow and see how that evens things out.