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:) https://groups.io/g/tea

I like it but it has limited value for a homeowner like me. The price was to good to pass up and I am a certified member of TEA* *Test Equipment Anonymous (for people who have a lot of GAS**) ** Gear Acquisition Syndrome

I agree I think the are 250's, I didn't set the reference cell up perfectly so my reading might be a little off.

Nice thing is it comes with a reference cell, so when you test the panels you get accurate results no matter what the sunlight brightness is

I know they are Trina Solar panels and yeah I purchased them as used, I think it was $40 a panel at the time. My daughter was able to get me this when she was in the PhD program at Texas A&M. Some crazy good deal (like 80% off it was a demo) otherwise this tester is usually out of reach of us...

Bumping an old thread. I purchased 2 pallets of these panels in 2019 or 2020 (can't remember) Any way they have been in storage this whole time, outside in the rain, moved from FL to TN on an open trailer. I did not have much hope for them now that I am getting my act together. I decided to...

It's pretty simple to do and the orange pi is easy(ier) to get these days. I'm a fan of doing it yourself and the savings will buy dinner. Every dollar saved can be used somewhere else :)

It's a load bank. Initial Investigation I found a vented cap and a bad 5w resistor. When I have time I'll do some more looking.

Out of order. Cell #4 charger to 3.6 discharged to 2.7 .23 mohms

FWIW my EVE 230's all seem to be testing fine so far. Admittedly I am only 4 in, but so far so good.

Cell 2. I took this one to 2.6 instead, and honestly I'll probably raise it to 2.7 in the future. 234.25Ah, 749.454 Wh. Cell was charged to 3.62 .22 mohm

First 230a cell test complete. I had to use the Kunkin tester because my big tester obviously is not working :) 232.29 Ah, 742.41 Wh. This cell was charged to 3.60V and discharged to 2.50V

:( ? I let the magic smoke out

Can I hear a UDP joke? Anyway, I switched from TCP to UDP because of Covid 19

This on finished. I am going to recharge and test it again. It recovered to 3.126v overnight

So going over my test setup and I spotted an issue. I think my serial cable was lose and was losing connection. At least that is what I think. :)

Testing one of my 280ah EVE cells that I have had for years. This is from the batch that sat unused in the weather for a couple of years. Heat mostly but it did see some below 0 F days recently. Anyway I wanted to do some test runs and just play around with some of my stuff. I am getting my...

Yeah but its been in TN 3 times now and GA twice with a side trip to OH

This happens all the time with my stuff. The warehouse is somewhat close, but it ships it around the country to get to me. Never the same route Friday, April 7 3:06 PM Package arrived at an Amazon facility. La Vergne, TN US 6:08 AM Package left an Amazon facility. Atlanta, GA US 3:24 AM...

So I have a question. I'm going to pull out my big dc load I have pretty soon (its in storage because I recently moved). It's full programmable scpi and I can write scripts for it. Could you let me know what you consider a good test set? What load, I assume .5c, but I am wondering when I...

52. He told me there were only 16 left. Perhaps you got them ?

Are you using ratchet straps there? Good idea, I have been thinking of ways to compress my cells.

Got these from 18650. Funny with my layout I have posted above I think I would prefer the old style terminal. I am going to do some testing and see what I can come up with.

Going to charge and load test each cell. I am going to break out my big load tester, it can do 300a discharge, although I would probably for this test at .5c or maybe 150a. To tired to start tonight though. Voltage Quick resistance test (no sense wires setup) Here is the discharge cap...

got the cells today Some pics Packed laying on their side. I am used to cells standing up. Slightly taller than my EVE 280n cells Not as wide, which is what I needed

Went with 230 cells on my build because of space issues. I am going to post capacity tests etc to this thread. I pick them up tomorrow. Initial setup I'm thinking will look like this Does that look OK? Bms will be rec bms. I am also going to compress the cells with boards and threaded...

Just tried to buy a bunch of these st 18650 and they are basically out. Someone purchased a large amount right before I called lol. I ended up getting eve 230's. These will be better for me size wise anyway.

Orange pi 3 lts has Bluetooth. Is that the one you are using?

Do you have a raspberry pi or an orange pi?

Wow color me impressed. I purchased 16 batteries in July 2020 for 95 dollars each shipped. Then life got in the way, I moved etc and the batteries were in storage for the whole time. Stored outside in a storage crate. To include Florida summers and a cold Tennesse winter where some days...

Oh wow, I just realized Robby1773 has a thread about these . Worse yet is I have a reply in that thread. ?

I really need to buy my cells for my battery packs. I am in a perpetual state of analysis and just need to buy already ? Buying 48 cells. I see the ganfeng 280s for 115, seem like a good deal at 18650. Anyone using these? Any reports on them? They also have the catl and calb 30(x) I have...

I think it's a great idea but it could be abused. Seems people always find a way to turn things sour. Also I notice sometimes people don't want to ask questions if they think they have to tip.

I was originally going to buy the 280k. However I have read so many negative comments concerning eve280 series it gave me pause

LoL. I am so struggling right now on which batteries to buy right now. It's like rolling dice. I ordered my bms today so I need to act soon ?