Midnite Solar Announced their new 10kw AIO at Intersolar Today

The Tesla Victoria Big Battery had a fire during commissioning of the battery, here's what the investigation found:

Basically the unit that initially caught on fire was in a key lock off state as it wasn't part of the equipment being tested. This disabled a bunch of the protection controls that normally operate. Also there was a 24 hour delay prior to the SCADA network being connected to Tesla monitoring. So a coolant leak escalated internally arcing and a fire. The second mega pack which was sitting back to back at 6" spacing (per UL9540A unit testing) ended up catching on fire due to fire infiltration from the plastic battery vents on the enclosure roof. Winds were 30mph versus UL testing of 10mph. Impressively the fire was contained to the two mega packs without further spread.

Just an interesting example of how things can go wrong with the big boy units

billvon said:

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Which is why having that comm interface is safer -......

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I think "safer" is relative here.... Relative to what you and I look at as "safe".

Cell overvoltage causing BMS shutdown shouldn't cause a fire or overtemp.

I have a question on this now. Do you want the inverter to stop charging when you reach cell overvoltage?

Cell overvoltage means one of 2 things. Cell imbalance, or a problem cell. If the inverter simply stops charging when that happens, the problem will likely never be resolved until there is a complete cell failure, or if the "system owner/operator" notices reduced capacity. Most SOC monitoring systems will re-calibrate to 100% at this point causing the operator to believe the battery is full.

BMS overvoltage shutdown will either cause DC shutdown and therefore power malfunction, thereby alerting the operator that there is an issue. Or it will at least record the overvoltage fault, and even though the bayyery shuts dow. The inverter will hold the higher voltage giving the passive balancer in the BMS (or active balancer if there is one) a chance to work on top balancing.

Sometimes what seems to be better isn't actually better. Sometimes an actual power shutdown ends up in a better end result.

I would rather have my customer call me and say their system shuts down when nearly fully charged, than call and say that some thing seems "off" and it just seems like the backup gen needs to run too often. Knowing that top end voltage is causing shutdown tells me right away that there is a cell issue (either imbalance, or bad cell). That way I can resolve it right away, before the issue causes other longer term issues!

Again, just saying what my personal thoughts are from personal experience. And I'm not saying closed loop is complete garbage or anything! Just saying that personally I don't see
the huge benefit that most people crack it up to be.

Halfcrazy said:

Here is the spec sheet for the new AIO

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It is missing idle current and also weight.

WindWizard said:

It is missing idle current and also weight.

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The weight is 44.45Kg/98LB

Found it here: https://www.midnitesolar.com/productPhoto.php?product_ID=766&productCat_ID=65&sortOrder=1&act=p

Idle current is around 60 watts

For those of you looking for pricing, this is the first I’ve seen. Though it seems a bit weirdly specific?

midnites site updated this weekend. No longer says April but “Summer”
Interesting that the solar biz now has a price listed.
They didn’t a week ago, Midnite hasn’t changed their price sheet, and Dexter still has no price listed

At $5,100 it’s a good 2-3k cheaper than a single Rosie with Barcelona combo. Greater AC output and potentially features as well. Obviously not a 1:1 comparison between the two but still an interesting one

Trav’s tinkering said:

MidNite Solar MN15-12KW-AIO-P All In One

MidNite Solar MN15-12KW-AIO-P All In One

www.thesolarbiz.com

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$5135.

Would have been Cheaper than the eg4 18kpv except that they just dropped the price of the 18kpv to $4900.

Let's see if solark has another price reduction

With prices just a few % apart, is there any question at all which to buy?

Hedges said:

With prices just a few % apart, is there any question at all which to buy?

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None at all imo.
There’s the eg4 6kxp, a host of Chinese 10kw inverters all with differing levels of grid connectivity, or this.

Just my humble opinion. That isn’t to say there is anything wrong at all with the commissioned 18kpv or SolArk systems in the wild. But if it’s coming out of my bank account and I want an all in one system that costs between 3-7k and my options are midnite, or someone else.

I’ll pick midnite every single time.

Otherwise I’ll continue my bottom shelf budget tier stuff.

Hedges said:

With prices just a few % apart, is there any question at all which to buy?

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Very solid heritage, and the load shedding breakers to allow you to bypass/shed big loads based on your own preferences.

G00SE said:

midnites site updated this weekend. No longer says April but “Summer”
Interesting that the solar biz now has a price listed.
They didn’t a week ago, Midnite hasn’t changed their price sheet, and Dexter still has no price listed

At $5,100 it’s a good 2-3k cheaper than a single Rosie with Barcelona combo. Greater AC output and potentially features as well. Obviously not a 1:1 comparison between the two but still an interesting one

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I see Rosie for $3300 and Barcelona for $2100? The matching breaker boxes are nice to have but not necessary.

Brucey said:

I see Rosie for $3300 and Barcelona for $2100? The matching breaker boxes are nice to have but not necessary.

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I included the E-panel and accessories in the estimate.

That settles my question on Dual Quattro or The One (not because of price but the delay). I look forward to hearing how it works for those that get one

NC_hydro said:

That settles my question on Dual Quattro or The One (not because of price but the delay). I look forward to hearing how it works for those that get one

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NAZ has some good pricing right now on Quattros, and 5% off Earth day coupon

Brucey said:

NAZ has some good pricing right now on Quattros, and 5% off Earth day coupon

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Which does not include the extended warranty that Current Connected provides.

rhino said:

Which does not include the extended warranty that Current Connected provides.

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I’m sure they’d be happy to add the 10% over at NAZ to facilitate it

1201 said:

$5135.

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Don’t forget the 81 cents .

My favorite feature listed :

“Unbalance load surge kicks butt”

Sounds like that was written by someone with calloused hands, not the typical marketing schmoozer.

Hedges said:

With prices just a few % apart, is there any question at all which to buy?

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Right now it would be the 18kpv, as the midnite has not been put through it's paces

G00SE said:

None at all imo.
There’s the eg4 6kxp, a host of Chinese 10kw inverters all with differing levels of grid connectivity, or this.

.

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Eh, this is also a Chinese 10k inverter. Let's not get it wrong.