JonMez
Solar Enthusiast
$211 on eBay right now!
DC HOUSE 48V 2000W Inverter with 25A Charger $350-$150 coupon=$200 on Amazon
- Thread starter zlamb
- Start date
Wolfpack7483
Solar Enthusiast
I'm finally putting the DC House inverter/charger through it's paces with the EW stackable 48v 50ah. Not positive results so far. After charging for about 20 minutes it went into "fault condition" for over temperature. After cooling for a few minutes, it would clear & start back charging. Decided to take the cover off & check temperatures of various components. The largest of the transformers was over the 311F my thermal imager captures. A couple of the MOSFETs connected to the main heat sink were right around 300F. Even with fans running continuously and the cover off, it would still go into over temperature fault.
After I finished charging with the bench power supply, the inverter/charger had cooled enough to be operable. I hooked up a heat gun at 1425w, and let it run for 20 minutes. I thermal imaged the same components as I did when charging. They were 80-100 F cooler than they were when charging. Anyone have an explanation for that big a difference?
After I finished charging with the bench power supply, the inverter/charger had cooled enough to be operable. I hooked up a heat gun at 1425w, and let it run for 20 minutes. I thermal imaged the same components as I did when charging. They were 80-100 F cooler than they were when charging. Anyone have an explanation for that big a difference?
JonMez
Solar Enthusiast
I let mine run for like a day once. It was doing the fan on the furnace, which is about 800 W plus the garage fridge which goes on and off for about 150w. Guess I’ll have to try the kettle test. Actually, I think I let it charge the EV for a while which is ~1400w ish on the battery side. I’ll have to double check. I know the fan was cycling and it wasn’t quiet, but it was also not offensive.
werepuppy
Solar Addict
This can't be good, that can't be operating properly I hope. I'd contact them. Getting that hot without the overheating protection kicking in is nuts in its own right. Is the input voltage and waveform ok? Can you independently check the thermometer reading somehow?
Wolfpack7483
Solar Enthusiast
Input voltage today was from the grid, so it was fine. The kill-a-watt had it at around 118v. After running in inverter mode without issues, I tried charging again. It would charge for several minutes, go into fault, then cycle back on. After a few cycles, it stayed in "fault" until I removed all power - battery & ac. It would then charge for a couple minutes before going back to "fault". Interestingly, it wasn't running near as hot while charging this time around, it just wouldn't stay on.
I have contacted them with the description of what was going on. They usually respond quickly, but it will be overnight.
Wolfpack7483
Solar Enthusiast
DC House replaced my inverter/charger that was overheating, @ no cost to me. Received it today. They still have not fixed the reverse polarity issue with the hard wired AC out. I made that change already. Have not put it through all the paces yet, but seems to run cooler initially. Pictures are of my "ghetto build" mobile system. No solar yet, but I have excess capacity from my home system to charge, at least right now.
Couldn't get a much simpler power station build, just connect the 2 cables (those are not the cables that came with the inverter/charger). The green cord is an old air hose that is now seeing duty as the "pull cord" for my mobile system. Refinements still to come.
Couldn't get a much simpler power station build, just connect the 2 cables (those are not the cables that came with the inverter/charger). The green cord is an old air hose that is now seeing duty as the "pull cord" for my mobile system. Refinements still to come.
JonMez
Solar Enthusiast
I accidentally bought one of these and I ran it for a day, didn’t seem to get crazy hot, testing by charging a ev plus a furnace fan. Odd on the reverse polarity
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Wolfpack7483
Solar Enthusiast
I've used my replacement inverter/charger for a significant amount of time @ a load of about 1700w. It does not run hot like the 1st one did. The "hard wired" AC out outlet does not have a strong physical connection to the unit. When unplugging the extension cord yesterday, the outlet pulled out of the unit. I'd recommend using the 2nd AC out that you have to hard wire yourself.
I see there is a 1200W version (15A battery charging) for around $150:
I wonder if it has mis-wired receptacles as well?
I wonder if it has mis-wired receptacles as well?
Heres a bandaid for receptacle coming loose.
I notice white silicone is used to retain other parts,
yet they didnt bother to squirt a little around that.
I like that my glue job oozed out on the finished face,which means it had good penetration.
It cleaned up fine with a small razor knife.
I notice white silicone is used to retain other parts,
yet they didnt bother to squirt a little around that.
I like that my glue job oozed out on the finished face,which means it had good penetration.
It cleaned up fine with a small razor knife.
Attachments
Wolfpack7483
Solar Enthusiast
I think I'm going to update the 14awg that goes to both "AC out" to something a little larger.
I already bought 1/2" cable glands to accomplish this and am adding a duplex receptacle to the output cord.
Going shopping for some 12/3 type S cord.
I got a single recessed male outlet to terminate the incoming power,so I can plug in the female end of a drop cord
Im also adding a weather proof pushbutton thats lit when on to turn the power on and off remotely.
I went to Skycraft yday and bought some 12/3 SJ.
It barely fit in the supplied cable glands.
What was tougher was working with a larger gauge wire,especially the grounds.
Give yourself about 4-6 inches of green so you can loop the wire.
remove the 2 phillips screws holding the terminal block for ease of terminating.
You will need a longer screw for the grounds to fit 2 #12 terminals.
It barely fit in the supplied cable glands.
What was tougher was working with a larger gauge wire,especially the grounds.
Give yourself about 4-6 inches of green so you can loop the wire.
remove the 2 phillips screws holding the terminal block for ease of terminating.
You will need a longer screw for the grounds to fit 2 #12 terminals.
Wolfpack7483
Solar Enthusiast
I used 12/3 as well. I had to use a knife to scrape out & "enlarge" the opening to the gland to get it to fit. I know exactly what you mean about the grounds. Very difficult to make that 90 deg turn after adding a ring terminal. I didn't need a larger screw with the ring terminal.
DC HOUSE PM
New Member
Hi, thank you for raising this. We recently found that a small batch of units may have the live and neutral wires misconnected internally, which could cause safety concerns.
We’ve already corrected this in production and updated our quality checks to prevent it in the future. If anyone has purchased the affected unit, please stop using it and contact us—we’ll arrange a free replacement or inspection.
— DC HOUSE Tech Support
Has anyone else received an email from DC House regarding purchase of miswired unit?
They are now saying they will send a 12v 12a battery to me for the troubles.
Not sure what to think of this.Im sure the battery costs more for shipping than its worth.
They are now saying they will send a 12v 12a battery to me for the troubles.
Not sure what to think of this.Im sure the battery costs more for shipping than its worth.
I have not.
Please allow us to express our sincerest apologies. Due to our negligence, this product failed to comply with local US electrical usage standards. We have confirmed with our product department that the product remains fully functional and poses no safety or operational risks. We deeply regret the unnecessary inconvenience and loss you have suffered.
Upon discovery of the issue, we took it very seriously and immediately conducted a comprehensive investigation, resolving the issue in subsequent production batches. We are fully committed to ensuring this issue does not recur and have implemented rigorous internal process improvements.For this reason, we are willing to provide you with appropriate compensation, a complimentary 12V 12AH battery, and fully cooperate with you to minimize the impact.
Once you receive the battery, please help us revise our review. We look forward to hearing from you.
And special thanks to @Wolfpack7483 for the tip of reversed polarity on AC receptacle
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