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It was entirely configuration of the drains and layout of the room, and where I was willing to run a hose. So esthetics, not physics.

As @zanydroid said above, I could directly drain the water from the dryer. It wasn't convenient to drain it by gravity until I could stack the dryer on the washer, and I didn't want a hose running across the floor to the floor drain so I left it configured to catch the water in the compartment...

I like the concept of the utility incentivizing customer feed in when its needed. These incentives would let customers benefit from using small battery systems to help out the grid. This is much better than the 'pointy haired boss' option.

I do have some experience with an LG heat pump dryer. I purchased one last year as part of a long term plan to reduce air leakage of my house. I wanted to get rid of appliances that used conditioned air from inside the house and then dumped it outside. I got rid of my traditional resistance...

This is interesting news to me. I hadn't heard of utilities implementing demand based charges on residential customers. I wonder why this was chosen instead of time-of-use rates. The stated goal of both systems is to minimize the amount of generation capacity that has to be installed for peak...

Hi iClick. It might be helpful to post which battery brand and model you have. From your description I am thinking its one of the 12 volt lithium batteries in a plastic case with dimensions similar to a lead acid car battery. A brief short like that would not have damaged the cells. It may...

Hi Xhumeka. I also used the iCharger X8 to do a bunch of cell testing. It has a connector on the side to allow for voltage sense wires which can connect directly to the cell terminals and give the voltage at the terminals. This eliminates the voltage drop through the wires carrying the...

I've been pondering the best practice for this situation. It seems most people think of the battery as the source of the current in the event of a fault. However, there are three other batteries pushing current into the bus bar, so it actually has a higher available fault current than any...

@Hedges It may be more human than we think. The the quote above from post #57 reveals it already is exhibiting he Dunning-Kruger effect. :)

Hi Martin, I'm in the U.S. with our 240V split phase electrical system, so I don't know if this directly applies. However, I have run my 120V portable induction HOB on a 2000 watt high frequency inverter and did not notice any performance difference. On its highest setting, I think it pulled...

Based on the visible portion of the encoding, that may be a Data Matrix, and not a QR Code. A QR Code has the concentric square pattern in three of the four corners. In your image, two corners of the code are visible and neither corner has that pattern. I believe it was stated earlier in the...

Interesting. Maybe my camera is struggling doing the scan on a screen. It has worked in the past. (edited because my previous reply was garbage for lack of actually looking at the content of your post. ):rolleyes:

I looked at the photos above and never noticed that these aren't QR Codes. Has CALB always used DataMatrix to code their batteries? I tried the LiFePo code scanner app on them and it doesn't work, so apparently it will only read QR Codes, which is a bit of a bummer. Looking closely at the...

Hey Will, I think you might have misunderstood what they meant by the whole "Drill baby, drill!" thing.

I agree with the sentiment of your comment, but not the details of your 'grade A or B' terminology. Here is a short paper that lists many of the certification tests for EV grade battery cells. It was written in 2020 to compare the Chinese GB/T standards with standards from other countries...

I'm with Bud on this, but maybe even a step more cautious. The EG4 battery you have can put out at least 125 amps. If the wire coming from the battery cannot handle 125 amps, it needs to be fused at the battery connection. I have a grandson who didn't understand this principle, and installed...

This probably should also be a thread of its own. Maybe it is somewhere. I get what you are saying. When designing a pack, you care about how much energy (kilowatt hours) it can store. When loading the inverter, you care about how many watts it can output. When comparing cells of different...

I appreciate you sharing your experience because I purchased from Docan last year and had a good experience. However, I've been watching more people have experiences such as yours and have tempered my recommendations some. Vendors can change and the quality of their stock can change. On the...

Hi @conquistador. I was considering just using a length of copper wire for the load if I am testing one cell at a time. The resistance required is only 0.021Ω to get 150A at 3.2V. I hadn't considered the mosfet idea. I'll have to look into what would be required. and Happy Conquistador's...

Thanks for the suggestion, but I already have one of those. I think they are good for checking connection resistance, and I did use it to test all my cells. However, the manual says it is not for testing large cells. It is an AC resistance tester, and I think in larger cells capacitance and...

So this is the problem trying to compare watt hours. You see different watt hours and assume the cells are different. How do you know that the resistance of the connections to the cell wasn't different for one cell than the other? That would also cause the watt hours to be different. The...

I was the youngest. I may not have been the favorite child, but I can guarantee I was the favorite son. :sneaky: Or perhaps I just had the problem of over-thinking trivial things. On the other hand, a few years ago I was home at about 8am when I heard a loud THUD and felt the house shudder...

It looks like you've put a lot of thought into your build. One suggestion I would give is that it is only your batteries that need to be warmed. Warming the entire compartment is not as efficient as putting the heading pads in contact with the bottom of the cells so that the heat can conduct...

There are insulated boxes, and then there are INSULATED boxes. The answer to your question is calculable if you know the combined square footage of surface area of all sides of your box, the temperature difference you want to maintain, and the R-value of your insulation. This assumes you have...

Here is the section of an EVE LiFePO4 spec sheet dealing with temperature. So, you can discharge the battery cells as low as -35°C (-31°F), but they don't want them stored long term below -20°C (-4°F). An of course they are not supposed to be charged below freezing. It really becomes a...

Perception is a funny thing. My mom used to always make sure the toaster on the kitchen counter was unplugged if we were leaving the house in the morning, because it "might catch on fire". However, she never gave a second thought to the the pressurized natural gas line in the basement with a...

I am dumbfounded by the historical attitudes toward home insulation. It is evident that either that generation was so hardy that cold, drafty houses were no big deal, or evidence that the relative cost of energy was really cheap. I purchased an old 700 sq. ft. home that was in terrible shape...

This makes perfect sense if the fastener torque is high enough to actually flatten the copper against the aluminum to the point it provides a good seal. This works on the oil pan of my car where the torque is about 25 newton meters. I still have trouble buying that a copper washer is getting...

I am I understanding correctly that their instructions have you put an un-plated copper washer between the plated copper bus bar and the aluminum battery terminal? This seems counter productive to me, as the copper is prone to corrosion if its not plated, and it puts it in direct contact with a...

Payback can be defined many different ways. When I started deciding to buy stuff to try to make a solar system that could provide all of my electricity at least 8 months out of the year, with battery storage because net metering just isn't worth the added cost here, I calculated that I would...

Hi @GregTR. I guess you are kind of new here.. welcome to the forums. This IS what we do.:sneaky: Have you seen the posts that are 45 pages long, and only about 15 pages are on topic? Obviously, looking at my previous three sentences, I can't argue your point about the smart-assery. I can...

I've got the 4s 200A JBD BMS and can change all of the settings over Bluetooth using version 3.1.1026 of the xiaoxiang app. It is on Overkill's website here: https://overkillsolar.com/support-downloads/

I bought a bunch of 304ah cells from Docan months ago. I've been methodically testing them, one per day since the middle of August. So far so good. I've built one 12 volt battery to use in testing the other cells. I have 14 more cells to go and then I'll post some about the results. So...

Yes, this needs to be fixed.

I think as far as energy sources that are readily available to individuals, solar is good and getting better by comparison to other sources. And it has the advantage of being able to integrate into our current method of building structures. On a community level, there is a good argument to add...