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It well maybe under warranty, but how would you know? (they are not to be found on the site anymore, and the manual doesn't say) I am corresponding with SGP, taking videos of the inverters not working etc. Was able to connect a PC and get fault codes, the culprit seems to be "DC-DC over...

My sgp ip6048 just died. Purchased in Dec 2022 finally deployed Dec 2023. Ran most of the house from batteries and solar. About a month ago screen went dark, but inverter was working, charging batteries and running loads. All from just solar with grid breaker off. Then something happened (maybe...

nah, not mkay 48v is a nominal "label" "lower amps" is imprecise enough to be misleading lower amp-hours (capacity) is accurate but also higher running amps - by ~6% -> more wire and bms heating etc some inverters are capable up to 60V and are labeled a "48V" system I am using 17s packs...

Cool! But that's not the 6048 is it?

Grid was down due to storm and the batteries at 7% so I was changing every imaginable menu. In the end I hooked up the generator to AC input. That worked. It is unacceptable as a regular practice but addressed the emergency need. You have to be really really sure you have grid disconnected. And...

Just messaged JKBMS store on aliexpress waiting for reply... anyone found any HW (short something) solution? Update: JKBMS store resolved it: 2 codes 1 for "pairing" second for configuration pwd - this one required the serial number - 1st had to pair then get the serial from some menu inside

Hi Mike Did you ever get the generator to charge the batteries? I am having exactly the same problem right now, now that the power has been off for 2 days...

thank you for your reply I just found this thread https://diysolarforum.com/threads/very-confused-need-help-with-ac-coupling-ip6048.60815/ which with your answer together looks like the thing I want might work

Here is a fragment from the manual. I have a couple of guesses about this, but can't connect power sources together based on a hunch :). Does anyone understand, better yet use this? Thank you

about the fans: I have 2 units one was purchased over a year ago: fan runs all the time but only gets loud when the load is above 2KW the newer one purchased around thanks giving 2023: fan runs on full as soon as it is turned on

Thank you anyway. I did get it working with the same cable that didn't work before BUT with the newer PC software The one on the CD that came w. the box didn't work, but version 18 I downloaded somewhere does connect via USB. I was able to configure stuff from the PC. I am a bit hesitant to...

Hi, I've restarted my project and this IP6048 is still giving me grief. Could you point me to the firmware update procedure please? Also a link to the would be great. I bought and tried several with zero luck. Maybe I'm connecting them to a wrong port :LOL: I have configured it via screen and...

I'm not an expert by any means, just researching the matter myself. But I think "the house has nothing to do..." is incorrect - your inverter is connected to the house. Aren't inverter and house neutrals connected?

Hi Related question: does this mean that the battery negative has to be connected to ground and through the house main panel end up connected to inverter neutral? My inverter manual tells me not to ground the PV negative, but I can find nothing about the battery negative. Thank you

the welds can not be flat enough, at least on the cells that I have i agree that the surface around the stud is very small but I would be much more concerned with flatness. could you post a picture of what the surface looks like? (the one that the bar is sitting on after the mods)

Exactly

I did have these errors (I think ... something about grid frequency) on startup only. Also "cold start" from battery (no grid) would cause BMS to go into "short circuit" for 60seconds twice. I guess capacitors had to be charged, after that cold start would work and I could connect the grid. Also...

Here is a little design that makes me less anxious around all these kWhs Happy to share stl file, takes about 10min to 3d print one. Depending on your printing skills you might have to run M6 tap before using... I did ? https://www.thingiverse.com/thing:5987594 - STL file here

Hi Steve, I've just assembled a pack with the same exact JK BMS It did start up a couple of times initially, connected to phone app etc. Then it would "partially" turn on - show 38V instead of 57V (this is with 17 fully charged cells) The last thing it did was "turn on" to 38V blink for a few...

I'd like to know also. Lots of info about 48V systems But for HV (high voltage) only expensive $10K / 10KW products

now you are telling me :cry:

just plugged in IP6048 for the 1st time today even though it arrived in December I wish I did 3 months ago. So far I want to get rid of it. 1 - can't connect through built-in usb 2 - PC app (Solarpower) can't connect via wifi either 3- it is sitting plugged into AC (grid) with nothing else - no...

anyone knows if they are ok to use ? 1 battery tested from the batch at 302Ah - doesn't have spots

I have received 17 cells from 18650BatteryStore. These are EVE LF304. So far, I see something under the blue plastic on 3 of them. See pictures. Is this a cause for concern? Some small leak definitely occurred at some point.

Some rely on government regulations, some don't give a ...t, some read forums to learn... Absence of confirmed stories doesn't make me feel confident enough. All this stuff is too new. If there's a precaution that I can take and it means only a marginal effort and cost, I do.

Call me paranoid but I'm building a concrete "cabinet" outside, next to garage wall. Even with LiFePo4 and the best BMS and fuses etc. I want to be sure that my power wall is safer than Tesla's. Cinder blocks are cheap, rebar is cheap, cement is cheap. Pretty much everything is cheap compared...

OP here with a quick end of story update. 1.Credit card finalized disputed amount in my favor. 2. Seller wants me to ship the cells back to them. 3. Seller agreed to pay for the return shipping. If it wasn't for my credit card I'd be screwed. End of the story.

Op here with quick update. The seller emailed several weeks after dispute was filled. They proposed small credit for failed ones. But eventually agreed to refund the whole thing. I had to photograph each qr code etc. Still waiting for them to provide shipping. Now who do I buy cells from and 16...

Do I understand correctly that you have both foam pads and springs to compress? If so there still has to be movement caused by expansion of cells. I expect that the spring is much softer (N/m coefficient) than the foam pads so the pads are likely to change thickness very little while the springs...

Good point. Yeah location makes a huge difference with the mayhem on the news today. It doesn't go below 48F at night where I am. Saw some frost on roofs few mornings ago but 55+ during the day. It also doesn't get above 80F so if all the connections are reasonable it shouldn't need cooling...

I know old thread... For winter and higher altitudes I'd orient the solar panels vertically to prevent snow accumulation. Not optimal angle but better than nothing. Then the batteries can stay charged and get warmed up by solar with some automation.

Right, when you compress and connect your cells are you going to use flexible bus bars?

To late to change things, but I welcome any suggestions anyway! Dimensions are approximately 32"x20"x15" basically should fit 8x2 cells + the bms, contactor and esp8266 for extra temp monitoring etc 4" bottom 2.5"walls and lid. Hardie backer board for leave-in-form, concrete filler. Liquid tight...

My reason for not using compression is rigid bus bars. Do they apply force to terminals when the cells move? Even the very small expansion will apply a significant force to the studs.

Op called ? The dude in the phone said "wrong number" Op emailed, then after 2 days used website chat window got "automated" reply over email after 24 hrs saying "we'll get back to you". And if I have to ship them back, I'd be happy to. At their expense. Should not be too bad, from/to California.