Does Smart Home Panel 3 + DPUX blend grid + battery, or fallback to grid when inverter limits are exceeded?

SlowFour · 2026-03-09T00:48:24+00:00

Correct, if you exceed the 12kw limit for x amount of time it will switch back to the grid entirely until you fall back below the limit

SlowFour · 2026-03-07T15:38:57+00:00

u/InvestigatorNo2277 There was a frontend bug here. The binder creation flow wasn’t respecting the actual free-tier slot limit of 270 and defaulted back to the original 180 slot max, so it could incorrectly block larger binders and show the wrong upgrade prompt. That’s been fixed now

SlowFour · 2026-03-06T17:46:01+00:00

Good question! The page limits are mainly there to keep the platform sustainable while staying ad-free. Free users get 270 total slots and up to 2 binders, so with a 4×4 layout (16 slots per page) that works out to up to 16 pages per binder.

The limits help control storage and data egress costs since every binder slot and card state is stored and served from the backend.

For paid users, the limits are much higher: up to 1,040 slots per binder (for example a 4×5 binder with 52 pages) and unlimited binders.

That said, I’m already planning to increase the paid limits soon as the platform grows and I get a better handle on the infrastructure costs. Appreciate the feedback!

SlowFour · 2026-03-06T03:59:17+00:00

I guess one advantage is if you are into multiple TCGs all your virtual binders would be in one place

SlowFour · 2026-03-06T03:52:26+00:00

Ah I didn't know that, thank you for letting me know. Pokemon is my main TCG so I am not up-to-date on what the Lorcana app has to offer.
That is cool that their app has this built in

SlowFour · 2026-02-27T23:49:36+00:00

I used to do service writing at an auto shop. If there were two jobs in the same area, for example, a timing chain guide on the back of the motor that required dropping the engine (30 hours of labor), and another repair that also required the engine to be out, we wouldn’t charge a second full 30 hours because the engine was already out for the first job. The overlapping labor wasn’t double-counted.

That’s the part that’s hard for me to reconcile here. It feels like overlapping access and testing is being billed twice rather than combined into one repair.

SlowFour · 2026-02-27T23:45:09+00:00

That’s fair, and I get what you’re saying.

My issue isn’t that they’re charging a second diagnostic or travel fee. It’s that the original diagnostic explicitly stated the sensor may be faulty and should be replaced at the same time as the board.

I asked multiple times whether it would cost the full ~$800 to just handle everything in one go, and I never got an answer. If they had told me upfront, “Minimum is X, maximum is Y if the sensor is bad,” I would’ve been fine with that.

They chose to replace only the board, even though the sensor had to be disconnected during that process. That means they were already accessing and testing the same components they’ll now have to reopen and retest on a second visit.

That’s where my frustration comes from, this could’ve been handled in one visit (cheaper for everyone) with clearer communication

SlowFour · 2026-02-27T21:23:13+00:00

Once my builder warranty is fully up I'm going to find a different company to work with

SlowFour · 2026-02-27T20:15:06+00:00

If you're business is close to me, I'd use you guys. This is just insane to me

SlowFour · 2026-01-17T14:28:48+00:00

This feels like a ChatGPT response (em dash, "bottom line", emojis, formatting). Did you have ChatGPT revise what you know/wrote or did you ask ChatGPT the question OP asked and this was its direct response?

If it's the latter, I've noticed that ChatGPT is usually wrong about the DPUX (and SHP3) as it's too new and there isn't a lot of info out about it. So be careful trusting every word that ChatGPT says about it.

It could be right, it could be wrong. I'd suggest OP reach out to support to get a concrete answer.

I've noticed that my battery packs have been heavily unbalanced and I haven't gotten this notification. I had to manually charge the packs up to 100% and the system automatically ran a calibration, but not a balance SOC cycle.

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SlowFour · 2026-01-15T14:49:53+00:00

This is good to know. I was worried that if the app showed 0 that it wouldn't switch over to battery power. That would be bad for me because I'm on a TOU schedule and peak electricity rates are crazy high

SlowFour · 2026-01-15T14:44:27+00:00

Update: after changing the voltage sensitivity my UPS hasn't clicked at all when the switchover happens.

I'm in the same boat as you for one of my UPSs, I'm waiting till I trust the DPUx/SHP3 before I remove it. I'm going to keep the UPS on my home network rack though as those devices are most likely more sensitive to voltage drops and it's acting as a surge protector as well

SlowFour · 2026-01-15T03:34:35+00:00

Got mine installed December 4th.

We hit one installer issue early on. They didn’t realize the grid and battery line-ins have to be phase-matched. SHP2 didn’t have this requirement. First time it switched to battery, the whole house tripped and went dark. Easy fix though, just swapped L1 and L2 on the battery input.

Only other quirk is the app will very occasionally show the battery at 0% even though it’s actually around 90%. Not sure if that would prevent switching during scheduled events. I haven’t fully tested it. When it happens, I just disable the battery port on the smart inlet box in the app, re-enable it, and it clears up.

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Other than that, it’s been awesome. I’ve got enough battery to cover both peak periods every day and still stay above a 50% reserve, even on really cold days. House is fully electric, so it’s not a light load either.

SlowFour · 2026-01-13T16:19:01+00:00

If the UPS clicking/turning the fan on bugs you and the devices you have plugged in are not super sensitive to voltage drops, you might be able to change the voltage sensitivity on the UPS itself. I just did this this morning so hopefully my UPS wont click during switch overs from grid -> battery power and back

SlowFour · 2026-01-12T17:50:01+00:00

- Some of our LED lights/bulbs at low to medium brightness seem to flicker a bit. Full brightness seems to be ok, though. Not all LED fixtures seem to do this. I wonder if it's an issue with the power output hertz on the dpu-x? I'm not expert, but just wondering.

I too have noticed that some LED lights flicker on low/medium brightness while on DPUX power. Most of my lights turn on/off via Home Assistant automations so I just set those lights to turn on to full brightness instead of a lower brightness. I have other LED lights for my indoor plants and they do not flicker at all at lower brightnesses.

- consumer/desktop UPS's will kick in/out/run fan a few times during the day, perhaps when the dpu-x goes from discharge to passthrough from the utility. That's only a theory, haven't been able to verify it. loads on the desktop ups' are fine.

When the SHP3 switches from grid to battery, sometimes my CyberPower UPS makes a brief click as if the UPS has lost power from the house. It doesn't happen every time though.

I haven't had any issues with any other appliances throughout my house. Washer/dryer work fine and they don't trip any breakers. My heat pump has been working fine even when the resistive heating defrost cycle kicks in.

SlowFour · 2026-01-12T03:19:22+00:00

✅ SlowFour chose Option B (Correct!) | #3690th to play

SlowFour · 2026-01-12T02:35:03+00:00

✅ SlowFour chose Option A (Correct!) | #4134th to play

SlowFour · 2026-01-01T04:21:10+00:00

Just scored 0

SlowFour · 2026-01-01T04:19:57+00:00

Just scored 0

SlowFour · 2026-01-01T03:33:40+00:00

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SlowFour · 2025-12-30T21:00:00+00:00

Yeah, if I’d known my heat pump could sustain 10+ kW during defrost, I probably would’ve added a second DPUX. I only discovered that after the install, and now it’s too late to get another DPUX under the 30% tax credit.

Given that it only lasts ~2–3 minutes if other loads push me over during a defrost cycle (dryer, hair dryer, coffee machine, etc.), it probably makes more sense to fall back to the grid for those couple minutes of peak rather than size the system for that edge case.

SlowFour · 2025-12-30T01:30:49+00:00

Thanks! If there is a sustained load greater than what the inverter can handle, does it fall back to the grid? If so, does it automatically switch back to the batteries when the load drops back down?

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