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Following fellows forum members feedback i added some changes to my battery rack. I changed the Bms holder to make use of the M3 threaded holes the Jk bms comes with, now it has more air circulating around it. I added a mini bracket for the jkbms button on the right I changed the connector...

I am changing the air filters on my Voltronics to something with higher quality and that is more convenient. If i use 4 small neodymium magnets to attach the new filter on each side could i damage or disturb the electronics of the machine? Thanks

As you can see i am making progress but there is still a lot to do. I added another Voltronic Max Axpert 8kw. The first three generate three phase AC, the fourth will add more capacity to one of the phases so i can power the appartment while charging my EV without maxing out that inverter. It...

Hawkeye experts dont crucify me too harshly

Hi! I am searching online if somebody has successfully increased their EV's battery capacity adding cells in some sort of diy setup. So far a lot of info on hacking EV chargers (i didnt knew this was a thing), but nobody getting into the car's battery bus and hacking it. Do you know somebody? Thanks

Has anyone tried to directly plug Lifepo4 batteries in series into the DC charging port of the vehicle? As long as you match voltage and maximum amps i think it could work, but it feels like a dangerous thing to do. It is a shame they dont give you the possibility of increasing the battery size...

My solar system is in a place where is getting close to 0º celsius. Is 1,8ºC tonight in there. I was thinking of covering the pack and the bms (jk-bms) with a blanket to help it a little bit, but it feels kind of dumb. Is there any trick or system people use to heat/cover the batteries?

War ramping, a serious financial crisis next year (banks are insolvent after buying a gazillion bonds that now are trash), all kinds of debt skyrocketing, the money printer will go bananas, very high inflation coming, people getting more and more wild and crazy... I am seriously worried for...

I am looking all over but the solar assistant info available is quite confusing. Can SA work with a multi inverter (3x voltronic max axpert) setup generating 3 phase? If it cant, is there another similar microcontroller system out there that can?

I have 3 Voltronic Max Axpert 8kw. In SBU mode, they will get the power they need to function (40w each, 120w in total), from solar when is available, but when the night comes they power themselves from the grid, even if the battery is full. It bothers me using 1-1,5kwh from the grid every night...

Let me say first that i have nothing to do with these vendors. I have checked solar panels offers to complete my system to 20 kwp and i am amazed how cheap solar panels are right now, at least in Europe. This is an offer for N-type bifacial monocristalline 570w solar panels for 150 eur each if...

I am reaching the 20kwp of solar i can legally put on my roof. I want more during winter, has somebody thought about/tested this idea?

I was connecting 3 strings of solar panels to ground. I started connecting the panels frames together BEFORE making the actual ground connection and i got a small electrical shock when i touched the back of one panels with my bare (and a bit sweaty) hands. It was probably 40-50 v dc but i was...

I am building a kiln with sic heating elements, and i am going to power with my inverters. The power will be controlled through pwn duty cycle. Considering that the inverter is pretty complicated and has to respond in real time to the power demand using different sources, could this switching on...

I have 3 jakipers 300 ah in total, 50 soc right now, they measure 53 v with the voltmeter. I want to add a diy 304 ah lifepo4 battery, just connect it to the busbar, but this one is full 100 soc, it reads 56v with the voltmeter. Will this voltage difference produce a violent discharge from the...

So i am discovering how essential is to have very good contact between the busbars and the battery. The problem is that the battery terminal does not have a flat surface for the busbar to rest on. It has like a raised outer edge and when you torque the busbar in it just 'bites' a circle in it...

My 16s lifepo4 battery pack works with a JK bms B2A24S15P and i have connected the small 4,3'' lcd and switch. I am not very impressed with it. I am thinking that for the 45 eur this small lcd cost you can get a used/refurbished small tablet with bluetooth and have much more for your money, just...

While i am learning more and more i come up with new questions. In a 16 cell 48v lifepo4 battery build, what hardware would you think is best for protection? Right now i am putting just a 160 amp dc breaker. Could a class T fuse in combination with a simple battery disconnect switch be better?

I want to test this 160A dc breaker to see if it is bi-directional and of course if it trips at the 160 amps. How do you do it? I was thinking of using a welding machine to supply the high current and a clamp meter to check it.

I am doing a capacity test with this. I started using 2.5mm2 (awg 14) wires doing 20 amp discharge rate. I think it was too small and i changed to 4mm2 (awg 12). Probably the small wire has introduced some error in the measurement. Does anyone has used this device?, what wire size do you use for...

16x Qishou 304 ah Lifepo4 batteries just arrived, i think i got scammed. They have a weird bump on top. Are these defects important?

So this just happened: This is the connection diagram i had: The red wires were connected properly, the bms was up and running, i had connected the power supply to start charging the batteries and after i enabled charge via the app the bms exploded like fireworks. I hope my cells are still ok...

Bought jk bms and from a separate vendor i bought the lcd screen and longer red wires for the positive leads of the batteries. Connector of red wires does not go in easy, try push a bit harder. Nothing. Then from one side, then the other side. A bit harder. Start to go in but i had to push it...

I have 3 jakiper batteries in my solar system. They are wired in parallel with a big busbar. With the air conditioner going all day my batteries often dont charge or discharge completely during their daily cycle. After some days going on like this my 3 batteries show very different soc, like...

In one of my Jakiper batteries one of the cells (cell number 9) allways charges faster and triggers over voltage protection. Even when re-start from a top balanced situation (all cells same voltage within 0,005 V), cell number 9 will charge faster than the others. What would be the list of...

Can some of the energy in the compressed refrigerant be recuperated somehow instead of having just an expansion valve? I am not an expert, i am just curious to know

I want to protect my panels, is putting a lightning arrestor like this a good idea? I own the building

I am going to build my first battery. It will be 16s 304ah lifepo4 but i dont know where to start with the BMS. I need something that can push 200amps What would be your best recommendation? Thanks

Are these any good? What would be a better alternative?

Hi i finally got my system up and running. 3x Voltronic Max Axpert 8kw generating 3 phase power. However when the system is running from solar/battery (sbu mode) i still see in the main panel watt meter a constant 0,13 kw being draw from the grid. Are the inverters consuming this power? And if...

Hi i am very happy to present my system. Its up and working. Is my first solar project and i am not an electrician so there will be a lot of weird stuff at first look maybe :) Anyway i want to thank to everybody here because i couldnt have made it without the wonderful information and support...

Hi i live in Italy and i am installing 3x Voltronic Max Axpert 8kw inverters at my house. I have 3 phase power installed so i am putting them together to generate 3 phase power. One phase each inverter, like the manual indicates. However the manual does not say anything about the ground wires...

I am planning of installing three inverters (voltronic max axpert) working together to generate 3 phase power. However it would be very important for safety in my system to have a separate device in the electrical box that will disconnect all phases if any of them is missing (like when 1 of the...