Recent content by Luk88

I will get compensation for the broken panel and the cost of transport, I just need to get some paper work done. The seller said these should not be stacked horizontally when there is so many. Anyone buying less than one pallet full - make sure they don't stack horizontally. I have a video of...

Well, this weekend and maybe Monday was a time a couple CMEs were arriving(6 if I remember correctly) and there was increased probability of "bad stuff". You can think of these CMEs like gusts of wind. Same wind speed can cause different damage depending on how quickly it switches direction...

Extra bit if advice... Buy at least one extra panel. These panels are rated for 540kg of snow. Who would've thought if you stack 760kg one on top of another it will crush thd one on the bottom if you use thin wood pallet :-( Shipping costs more than one panel so it doesn't make any sense to...

Thanks. Is anyone surprised in Quebec out of all places they care more about these things? They've experienced a space weather caused grid disruption in 1989. So I'm not surprised people in charge od spec-ing their systems have it in mind. Just the fact they did this tests shows it. And yet...

A pallet(24 so not a full pallet) of 585W Jinko JKM585N-72HL4-BDV showed up :) I think I know why they don't make longer panels at the moment. There was 2in of space on both sides of the box truck that delivered these. BTW, I recommend people buying panels to test serial numbers just like what...

These cells (lithium in general) are extremely water sensitive. As in, they degrade when air with moisture gets in. How do I know it? I heard it, but also from limited self experience. I have been reworking the ends of a tiny 250mah 75C lipos for tiny fpv and I punctured the protective layer...

What are these protection systems in place for the grid that prevent the DC current induced in the lines magnetically saturating grid transformers turning them into resistive heaters so if the power is not cut it burns them out (not with a huge current either, so you can't prevent it with your...

Also, and this will affect the price a lot. I wonder how much lithium/cobalt they are adding to current generation of these sodium cells. If they are truly majority sodium (let's say 80%+ or even better 99%+ capacity comes from sodium) we should see this tech copied a lot (access to...

I sure hope for some competition in sodium battery space as at the moment they seem more expensive than lifepo4. Who in their right mind would choose sodium over lifepo4 unless sodium is substantially cheaper? There is the feature of better taking charging at low temps, but it is not a game...

I can't say they are all like the one I had. I also saw online tests where a guy runs a Kepworth at 1C and gets 103AH out of it. I don't think that is possible with 2p 45AH cells. So if you're lucky you may get a good one. If that is not it, than who knows? Perhaps Kepworth has reached a...

Yes, and they use these 45AH pouch cells(at least they did in my battery). How do they reach 100AH with 45AH pouch cells? Magic - that's how. Don't ask for internal pictures. They are patented. But here is a QR code: (the scanner doesn't have details on these cells, you'll have to trust me...

I happen to have an EASUN SMH-ii-7K inverter and another similar 4.2KW inverter I'm not sure the brand or type of. The smaller unit has grid tie and battery-less capability, but no parallell function. The larger unit has no battery-less (despite it being in the product description), no grid-tie...

None of the (inverter) manuals have even a sentence about it. I don't even know if they use rs-485 for inverter control (at least regarding g the deye and 7k easun as both have just rx, tx marked on the pinout). The easun has rs-485 port to plug bms into, but there is no indication it can be...

Thanks. What I can't figure out is if the device addresses will clash? Do these devices even support changing an address? (there is no such function in the firmware, nor any dip switches I found). There is some sort of "auto addressing", but do these devices use it? Thanks, that is next...

As in the subject. Supposedly all my inverters (Deye Sun-3k-g, EASUN SMH-ii 7k, MPP 4.2 kw hybrid inverter) as well as all my Heltec black(rebadged JK) BMSes support RS-485 (modbus?). There are various open source projects that talk to these devices when connected point to point (between a...