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I have confirmation from Sim at Growatt that the replacement MPPT control board that I ordered is incorrect. (Amos assigned the case to Simphiwe, who goes by Sim.) I will be shipping it back to Ian and am looking to get a replacement from Growatt directly. The connection that essentially blew...

I haven't looked into the Deye inverters. Most suppliers locally only install/have on hand AC coupled inverters with no battery support. As the local utility here has been messing around with buy-back rates, I'm prioritizing off-grid style inverters. With that being said, I would like my next...

I'm strongly considering going with a cheap truck box solution, especially after seeing yours and Sanwizard's setup pics. I can purchase 3 for about $500-$600 total before shipping. They should be here landed for under $1k total, which would be a fraction of the cost of my original custom shelf...

It would most likely work quite well, but I need the cells enclosed in metal to pass code here.

Bermuda. It's somewhat of a grey area as powerwalls aren't extremely common due to the ridiculously high cost. (Most items here are marked up 150-260% from shipped and taxed value.) Any higher voltage DC lines have to be enclosed in metal conduit. As the cells essentially have exposed contacts...

Not within my budget to do that from the initial setup. I can currently use a duty free allowance for imports for solar hardware. I would need to pay a 25.25% duty on the cost of a dedicated inverter, plus shipping. I was able to bring in the AIO inverter and my battery cells and not have to pay...

With either my shelves, the Amazon one, or any alternative, I am planning on using a sheet of ply coated with epoxy underneath as an electric insulator. For the Amazon unit I expect it would also help to keep things flat/level and prevent the surface from bowing/buckling. The custom unit...

Wow indeed. Coupled with the crazy rates is a monthly "facilities fee" of just over $70. This fee drops to around $35 if you backfeed to the utility company. They just dropped their purchase fees from around 22c/kWh to around 11c/kWh. There was a public response that resulted in them upping the...

I didn't want to risk going with the 24" box. It would be nice and narrow, but the pack itself without insulation between cells is 24." With everything bound and insulation installed, I might need a maul to get them to fit. (If it doesn't fit, force it...if it breaks it needed replacing anyway...

Thank you for the suggestion. The SC48120-MPV is comparable price-wise. I've added in the additional hardware that I'll need to properly implement the addition of one or two MPPT's in my pre-shipping estimates. Additional hardware needed differs slightly between the two options that are being...

Unfortunately this unit has a PV input voltage range that is too high to take advantage of my smaller array. (Similarly to the EG4 MPPT100-48HV mentioned above.) I'm not sure how I would use the power it would ouput unless I paralleled two units for split-phase and ran the office off of it...

Interesting idea, but I'd like the solution to be movable/modular so that if in the future I need to move the banks I can. Yes, I know it will be far from a quick process to disassemble everything, but I'd like to avoid the need of a jackhammer. ;) I had Costco membership when I was living in...

Neat setup! I'd most likely have to order those in if I go that route. What capacity are your cells?

Nice setup too! Are the buttons on the front for priming the inverter's capacitors through a resistor before closing the battery switch? I'm thinking of doing that with each pack to avoid having to do anything risky with live cables, and to avoid stress on the inverter's threads from removing...

With the options and funds available at the time it was one of my best options. The fault that I've had appears to be an isolated incident. (If you can find more reports of a failure like mine, please let me know. I'm genuinely curious.) Most failures that I've seen reported for the MPPT power...

Nice to see that I'm not the only one, lol! I've attached pics detailing the cabinet build that I was looking to have done. I would have 3 120mm fans on the left panel and the two 120mm holes on top for passive exhaust. The right panel would have the kill switches for each bank and the 4/0...

I can find a NEXXT 15U wall mount enclosure that might fit the cells, but they go for over $200 a pop and will need to be modified and put on a shelf so that they're off the ground. (Only officially support 132lbs for wall mount.) I would also have to have the cells on their side which I'd...

Honestly, that's what I was thinking of doing initially, but after speaking with a local electrician I don't think the inspector would pass wooden shelves it as it would lose structural integrity quickly in the event of a fire. I need the inspector's stamp of approval to keep the insurance...

Neat idea in the linked video. I'll have to look for the video of the guy with the Nissan Leaf cells.

I have a file cabinet that I can technically use, but the doors on the front would have to be replaced, all internal rails removed, bottom reinforced to support the weight, and shelving built. The cells would also need additional cabling to account for the odd configuration that I'd need to use...

Very nice setup! I forgot to ask if you used any compression for the cells, or if you just used the tape to keep them somewhat bound. I'm still on the fence about compressing them, but I figure if I have room it will help stop them from stressing the terminals during any potential expansion...

I received my replacement boards from Ian @ watts247, ordered on the 20th and received on the 25th. It looks like the charge controller board differs from the original and I have yet to receive confirmation from Growatt as to whether this is correct or not. As per Ian's instructions, I have not...

I am thinking of organizing the cells as 24" x 14" blocks instead of one long string. I was thinking one box per battery, 3 boxes total. (48 cells, 48v packs) I shouldn't have to worry about accommodating a heating blanket as the lowest temperature on record here is 43.6F (6.4C). I like the...

Thank you for the link, it's been bookmarked for quick and easy reference! Does this sound ok for 3x 48v 280A batteries in parallel, considering the aforementioned inverter?: Each battery having a 400A fuse. 2 gauge wire from each battery connected to common post. (Each battery with a 400A...

I hadn't considered unistrut for the case framing, but I'll definitely look into it as an option. I'll be using it to support the inverter, so I'll check the price when I pick it up to see if it's cost effective. I plan on using poly boards for compression which will also separate the cells from...

I know someone going to the US next month who's agreed to take the incorrect MPPT Control Board with them and ship it from the US. This will surely be FAR cheaper than trying to send it from here. (The expense of shipping it from here makes the return refund a wash.) Ian is thankfully...

I have no doubt that it was in his current inventory with how quickly it arrived here. It's listed as a replacement board for the Growatt SPF 12000T DVM-MPV, "GROWATT DVM 12000T MPV MPPT Control Board (Size of a credit card) SKTV03.0003200" on wats247. I emailed him to confirm that the boards...

Does it connect alongside your inverter on the same instance of SolarAssistant, or did you need to purchase an additional licence and Pi? (I thought you could only have multiple inverters listed if they were the same and configured in parallel, but it's been a bit since I've actually looked over...

I've run in to a dilemma. I went to return the incorrect MPPT control board to watts247 and FedEx wants $102 to send the board out...the board cost $105. I'm looking into other couriers on Monday, but I suspect that the cost will be similar. My brother flies out to the US next month, but that's...