New Toys Arrived - ZKE-40 Tester & Sun Fun Kits EVE LF304 cells.
- Thread starter Sam Cho TX
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Bud Martin
Solar Wizard
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You should use tinned Copper lugs since the battery cell has Aluminium terminals, Copper and Aluminium do not react well together.
Sam Cho TX
Solar Enthusiast
I understand the concept, but I very much doubt the time it takes to do the test is going to cause a galvanic reaction to occur causing the aluminum to deform/react... I will keep an eye out never the less and order some of the tinned lugs.
NOTE the clamps the tester came with are copper as well...
NOTE the clamps the tester came with are copper as well...
Sam Cho TX
Solar Enthusiast
I ordered some tinned lugs form amazon so I'll change them to those when the arrive...
Sam Cho TX
Solar Enthusiast
Sam Cho TX
Solar Enthusiast
Bud Martin
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So are these cells claimed to be 304Ah 'EV grade'?
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Sam Cho TX
Solar Enthusiast
Yes these are the EV grade cells form sfk, I am waiting for the v4 kits to come in stock. The prices are very good right now, actually even cheaper than luyuan.
I"m charging a cell up, it says 319 on the label, we will see what results I get, I will reply back with a screenshot of the results. I"m really liking this tester! But this is going to take a while, almost 4 hours just to charge the cell.
I"m charging a cell up, it says 319 on the label, we will see what results I get, I will reply back with a screenshot of the results. I"m really liking this tester! But this is going to take a while, almost 4 hours just to charge the cell.
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Bud Martin
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Looking forward to see the test results.
42OhmsPA
What's in a title?
houseofancients
Solar Wizard
202 a cell ?Ok the cells appear to all be intact all qr codes are visible and no bloating. Not too bad at all $202.50/cell delivered in 2 days with in the US
wow just wow
Sam Cho TX
Solar Enthusiast
Don't worry I had to ball up the wire to get it to crimp, I tested it is not coming out, these were the only ones I had it came in an assortment and this was the only one that was close.
On a side note this test is taking forever, I did not realize you by the time you charge, discharge and then charge back again you will be looking at 15 hours...
Sam Cho TX
Solar Enthusiast
This was the cheapest I have seen any where, Luyuan was my first choice but there quote on the site was 660 + 170 (shipping) + 57 (tax) + 17 (transaction fee) = 904. That is 226/cell and 2-3 months for delivery.
42OhmsPA
What's in a title?
May the ohms be forever in your favor.
houseofancients
Solar Wizard
to give you a bit of perspective
16* 304ah , including EU vat and shipping : 2400 euro..
150/cell
16* 304ah , including EU vat and shipping : 2400 euro..
150/cell
Sam Cho TX
Solar Enthusiast
What a chore this test was, basically set aside the whole day to test a cell!
After 15 or so hours, I was able to charge, discharge and then charge back to like 90AH, so now I need to try to get it back to around the 150 total mark..
My test said 314.40 AH and Energy is 1015.72
The label on the cell said 319.3759
So about 5AH less.
I'm reading the reviews they have on the LF304 and looks like others are saying the same thing average 4-5 AH less than the label. So I"m guessing this is normal? I will call them and see what I find.
Still well above 304 AH.
After 15 or so hours, I was able to charge, discharge and then charge back to like 90AH, so now I need to try to get it back to around the 150 total mark..
My test said 314.40 AH and Energy is 1015.72
The label on the cell said 319.3759
So about 5AH less.
I'm reading the reviews they have on the LF304 and looks like others are saying the same thing average 4-5 AH less than the label. So I"m guessing this is normal? I will call them and see what I find.
Still well above 304 AH.
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Sam Cho TX
Solar Enthusiast
Do these cells include an intact QR code made after 2022 and have a test report? Before buying these cells I emailed Oliver.li@evebattery.com to confirm the sfk cells where real genuine and they confirmed these are. I sent them the spread sheet which lists each of the cells as well and all checked out.
I also emailed regarding other sellers and they were not confirmed, only Shenzen Luyuan, 18650batterystore and Sunfunkits were confirmed.
Alkaline
Solar Wizard
No one matches the test report, real world actual tests are always lower. If you had a 280K the test report could have been like 292 but you would only get like 280. I would say you have good results. Test a few more cells to make sure they are all good.
304's test high on average, even grade B cells are around 310 ah.
houseofancients
Solar Wizard
yes they do
Sam Cho TX
Solar Enthusiast
I called sfk and spoke with Dwayne, they have some different settings for me to try so I'm going to test another cell. But this is going to be the last one I test. These tests are quite long and kudos to those that are testing all the cells, quite a task I must say.
So for this test I will be doing a 30 amp discharge as they are saying the 10 gauge wire should keep amps at 30
And I will need to look at the WH reading and divide it by 3.2 to match the label.
Ok so the cell is being charged and lets see what I get.
houseofancients, do you have a link, I was under the impressions the European prices were significantly higher than the U.S., so its surprising to see them actually be lower.
Thanks
So for this test I will be doing a 30 amp discharge as they are saying the 10 gauge wire should keep amps at 30
And I will need to look at the WH reading and divide it by 3.2 to match the label.
Ok so the cell is being charged and lets see what I get.
houseofancients, do you have a link, I was under the impressions the European prices were significantly higher than the U.S., so its surprising to see them actually be lower.
Thanks
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