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I saw this video and I liked the concept also. I'm still moving forward with this design. I'm going to get Bussmann brand or Blue Sea branded fuses so I know that they are higher quality. I ordered my buss bar from the onlinemetals.com website and I noticed that they offer them plated with...

I didn't realize that they had a facebook page but it looks like they must be looking at some sort of heater setup. I have v1.5 btw which is what their current photos look to be from. I read that I don't NEED to connect the black wire but I had a ring terminal on it and didn't want it...

My contact is Gloria. I have another 4 on their way in the next couple weeks so we'll see what they're like. This is my first battery I'm building so I'm learning as I go. I'm suspicious of the letter because why would the manufacturer not shrink wrap them unless they're grade B cells like...

It looks a lot like the Sungold that I purchased but with a fancier display. They're all made at the same place I'm pretty sure. https://sungoldpower.com/collections/power-inverter/products/3000w-peak-9000w-dc-12v-pure-sine-wave-inverter-with-charger I haven't gotten mine installed in my RV...

This is very interesting to me. So, if you have cells in parallel inside of a pack and you do an initial top balance of all the cells, would it be possible for the cells in parallel to drift apart from each other after a certain number of charge cycles on the battery pack? Or do they stay...

I'm curious, how do you determine you've discharged 10% in order to stop charging and let it rest? Do you go by the percentage numbers shown on the app? Or did you do a full discharge, check the amp hours, then discharge out 10% of the Ah you measured? I would like to do what you suggested on...

I have my BMS connected and have done some testing. It doesn't seem to really heat up so I'm not concerned about the cooling as much. There are two connectors on the board - 4 pin with H+ on one side and H- on the other side located next to where the balance leads plug in. Looking at the...

I'm putting together pretty much the same setup but haven't paralleled them or installed them yet either and you're scaring me! Are you checking amps on the bms app or with an amp meter? Are all the wires on both packs equal length and gauge? It could maybe be high resistance in a connection...

I'm using a JBD 150a BMS like this one... I have my voltages set according to the defaults in the Overkill Solar manual as a starting point. So, my pack under-voltage is 10v, low cell at 2.5v and release voltage at 3v, and pack release at 12v. The only setting the inverter has is a dip switch...

I have a similar setup to what you're looking to do. I'm curious how yours ended up. Did you end up doing two separate 4s packs or did you put all 8 cells in one pack with a 2p4s configuration and a single bms?

I have a Sungold 3000w 12V inverter/charger that I'm getting ready to put into my RV. I'm trying to put it through the paces to make sure I have all my angles covered and I did a discharge cycle on my lifepo4 pack until the BMS shut off the discharge due to low pack voltage. (BMS is a common...

I'm interested in this setup also. I'm upgrading my RV to Lifepo4 and I have 8 280ah cells on order. Will be building something similar to yours. I'm interested to see how it works for you. I'm hooking up to 3000W 12v inverter plus some small coach loads. How many watts are you going to be...

My BMS did disconnect on the low cell voltage, not the pack voltage. My inverter did shutdown before it reached this level though. I have it set now to shut down at 10.5v now and for what its worth it tends to read lower than the actual pack is so it shuts itself down before the pack ever gets...

Thanks for help guide me with some good info and experience. I've read the manual for the inverter several times and its one of those manuals where I don't feel like everything is clear so I needed some help. Since you've made me more comfortable with it I'm OK with relying more on the...

Did you find a solution to this issue? I'm also putting in a Sungold 3Kw inverter in my RV and facing similar challenges with controlling the inverter and the charging. I'd specifically be interested if you found out if the battery selector can be hacked and what your final setup ended up being.

I just received my order of 4 280ah batteries from SHENZEN BASEN today. The batteries look good but I haven't done any testing yet. My BMS should be here in a few days. The one think I noticed is that the little ovals on the top only one has blue around it. It came with a letter in it though...

I keep coming back to the Chargery... I don't think I really have other options. I live in a freezing climate so I really would like to have low temp cutoff. I think that the Chargery with the Chargery 300A DCC is what I need to to do the job. Should cost about $250 from aliexpress... Here...

I'm curious, what would you do if you had stripped M6 threads now? I stripped the M6 terminals in two of my batteries. I had been using studs but I was working on my batteries in cooler temps and I think the aluminum was brittle... anyways, I was going to follow your guide and drill to M8 and...

I disassembled my pack for the moment so I'm not able to do any further testing right now but I'll try to answer as best as I can.... Yes, I've double checked that. It seems to be putting out around battery voltage. But when I hooked up my dongle it pulled the voltage down right away. On my...

Thanks for helping. :) Ok, so I'll have to do some testing and find that sweet spot. One hitch in my plan is that the manual says that the inverter won't turn back on until it sees 13vdc :( I just had an idea from looking at the manual... what if I put a simple "wall wart" kind of AC to DC...

I'm installing a system in my RV right now and this guide that was in the resources section was really helpful for me to figure out the grounding of my inverter properly. I'm using a sungold 3000 watt inverter. https://diysolarforum.com/resources/grounding-made-simpler-part-4-mobile-systems.159/

I just got mine in the mail today. I have only one temp lead and it's less than a foot long. How are you guys planning on mounting these in order to have the temp probe reach? I was thinking of bolting to a piece of plywood and bolting thru the big holes to make standoffs to also bolt my power...

Hello, I'm new to the forum and I recently purchased an older RV that has FLA house batteries and happens to have a bad power converter/charger in it. In my search for electrical upgrades for the house batteries I realized that Lifepo4 is the way to go so I went that direction. I also learned...

I built this wifi dongle and I'm struggling a little bit. It seems that when I plugin the dongle to my bms (JBD 150a) it pulls the voltage down provided from the BMS to around 5v and my 3.3v no longer has 3.3v but less than 2 volts. I'm not sure what I did wrong or if the BMS can't proved...