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I am starting a thread specific to he Heltec 200A Smart BMS with 2A Active Balance. 200A max charge. 350A max discharge I have 4 of them and I bought them from the Alibaba Heltec store here - https://www.alibaba.com/product-detail/14-24S-200A-Smart-BMS-with_62544207027.html edit: I forgot to...

My 66 Deligreen EVE cells arrived today in 17 boxes I am happy to say that the boxes are in pretty good shape. One box was opened by customs. I opened that one and another one so far. One thing I noticed is a "Made in China" sticker right on top of each cell. I am happy to report that they...

This has been around for a couple days but sure looks cool - https://electrek.co/2021/03/06/awesomely-weird-alibaba-ev-of-the-week-5-seater-electric-boat/amp/

I have been talking about getting a SolArk 12K for months and I am finally getting the permit plan together. I am going to do as much of the install as I can myself. I am hoping you guys can comment about anything that is missing or if there is anything that isn't clear that should be. Or please...

I'm new but have been lurking and digging through threads for a month or so. It amazes me to see Will, Steve S and many others engineering, testing, documenting and debugging for the manufacturers of the the parts we need. Your dedication to sharing knowledge is priceless. I just want to say...

I finally got my system delivered from AltE. The main items I am installing are 30 Q Cells 330W solar panels and a Solark 12K hybrid inverter. I am going to start by mounting the Solark and a 10 circuit Reliance Switchbox. The new switchbox will go in place of the 6 circuit box there now. The...

I am setting up a MPP Solar 3048LV-MK 48V all in one. It has an AC charger that can output 60A. Currently I plan to plug the AC input to a receptacle in my garage that has a 20A breaker. Hedges warned me that this unit can use more current that 20A AC input. I did a simple conversion - 60A X...

I would like to make some fuse holders and distribution busbars. Does anyone know where to buy the plastic (or what it is called) that is used to make the base that gets screwed down? I assume it is fire resistant and won't melt easy. I assume wood isn't advisable. I don't remember seeing...

I stripped the threads out of one of my EVE 280Ah terminals. I decided to start a thread about Helicoils. I ordered a kit that comes with a tap and install tool. There are a lot of different types and special tools but I am going to try the old standard with tang. I will do some testing in...

Guys, my main electrical panel wiring is a scary tangled up mess. Since I am adding a Reliance transfer switch I will be adding a lot more wires and wire nuts. It doesn't help that I have minimal electrical experience. But, I am going to clean up the mess and I am going to add my new wires...

I was asking questions in the Enphase thread and Ampster recommended that I start a new one. I am about to install a new grid tied hybrid system and I want to use some Enphase Iq7 micro inverters because I have shade and different angles. Since I knew that batteries are DC I was hesitant to use...

Can someone please help me find information about small reasonably priced batteries for UPS? It only needs to run fans and lights for a couple hours. I will use a critical loads panel. I want to use it with SolArk 12K hybrid inverter and 10K of solar panels. And I want to be able to use my...

Guys, I need to connect to a tiny 4 pin connector and I don't know how to find the right part. The pins are about the same distance apart as a jumper. It would be great if i could find the right connector but individual wire connectors would work too. It is for the 4 pins above the green light...

I am trying to do capacity tests on my EVE 280Ah cells. I charged a cell with my Riden 12A Power Supply to 3.61V letting it finish the abosorb phase. Then I used my 200V 20A 180W adjustable Constant Current Electronic Load Battery Discharge capacity tester set to discharge at 24.5A to 2.6V. The...

I plan to use multiple 48v 280a battery packs. My hybrid inverter / charge controller manual says to connect the batteries parallel. How do I keep the other batteries going if one BMS needs to disconnect?

I've been searching for BMS information and it is surprising to see so many people blaming the BMS for ruining their batteries. I assume the problem is usually from improper top balance. But some people have overcharged a bunch of cells and blamed it on the BMS. I don't get it. The charge...

I have 4 older JK BMSs with active balance and I want to use on/off switches. But the old ones are missing the socket for the plug. Is there a way to use the on/off switch with the older JK BMSs? Old BMS New BMS with socket and plug-

Do you guys have good ways to attach a BMS to wood? I thought about using zip ties or some kind of strap but I want to check for better ideas. Mine is the Heltec with active balance (about 5" x 8" x 1"

I've been working on my solar panel layout and I need to know if there is anything wrong with my ideas. It seems doable to me but I don't have any experience. Please tell me what you think. I really want to be comfortable with my ideas before I apply for permits and order everything. I will...

My wife bought me a Seek thermal imaging camera It's just a little attachment for my Android phone. Does anyone have experience with these? I'll add more info after I try it.

I know some people are creating higher voltage 17s and 18s batteries. My inverter can handle up to 63V so I am wondering about making an 18s battery and never setting my upper charge limit over 63V or 3.5V per cell. This isn't anything I plan to do soon but the subject interests me. Are there...

Guys, I am thinking of putting an 18K between my meter and main panel. Then connecting my Solark into the GEN port of the 18K. My reasoning is to have whole house backup which requires the inverter between the meter and the main panel. But I want to keep my DIY batteries in a shed away from the...

I am finally getting around to adding 8 320W solar panels to my shed. I plan to use Enphase IQ7 microinverters AC coupled to the GEN port on my Solark 12K. I have 30 330W solar panels DC connected to the Solark. I have a friend who is a solar installer who has a lot of experience with Enphase...

Guys, I am going to install a 220V EV charger plug. For now we are going to split off our 30A dryer plug receptacle. But in the future, I would like to add a separate plug. I don't have any spaces left for breakers in my main panel. My electrician says I can add a sub panel or I can upgrade my...

I've been hijacking everyone's threads so I decided to start my own. I have a Solark 12K in a shed with four 280ah batteries. I have #6 cables running 100 feet from my main panel to the shed. I am thinking about adding another 12K and I am wondering if it makes more sense to put the 2nd one in...

I want to connect 4 100W panels to 1 IQ7 micro inverter. VOC=22.4 ISC=5.92A IQ7 max V=50 max Amps=10 I think I should connect them 2S2P. Which should give me 44.8V and 11.84A. From what I have found I should be ok because I can go over on the amps but I can't go over volts. I know cold weather...