Ron-ski
Solar Enthusiast
You could cut the crocodile clips off and crimp on some decent ring terminals/lugs.
Just bought 16 Eve LF280K A grade; update on degradation after 15 months
- Thread starter cajocars
- Start date
You could cut the crocodile clips off and crimp on some decent ring terminals/lugs.
Will do that; also, I think the cutoff charging current of 2A might be a bit too low for a 280Ah cell; the video from offgridgarage was using 2A for a 100Ah battery, so my cutoff current should have been 5.6A (it would have saved me half hour of CV charging). What do you think?
Alkaline
Solar Wizard
post your discharge test results, thank you.
Alkaline
Solar Wizard
Ron-ski
Solar Enthusiast
Alkaline
Solar Wizard
Thanks for the update. Ha, barely 280.5 but hey its 280.
What did your test report say? 290 ish?
Also note your WH is good 907 vs the 896WH on stock so above the WH capacity so 101.2% of rated capacity.
None of my grade A 280K hit 280, they were all 278 - 276, however all were 900WH.
What did your test report say? 290 ish?
Also note your WH is good 907 vs the 896WH on stock so above the WH capacity so 101.2% of rated capacity.
None of my grade A 280K hit 280, they were all 278 - 276, however all were 900WH.
Alkaline
Solar Wizard
Cajocars,
Can you test 1 more for us, thanks your results are helpful.
Can you test 1 more for us, thanks your results are helpful.
Yes, I'll test a few more in the next few days as I'm still waiting for my inverter to be delivered.
Where do I see the test report?
Alkaline
Solar Wizard
Ask fog star its a green/yellow report it lists each cell test data they get it from EVE.
MisterB1959
Solar Enthusiast
- Joined
- Oct 22, 2022
- Messages
- 355
thanks, i am really limited on height in the location i want to site my cells, raising them by more than 20cm will conflict with storage cupboards above, so i think mine would need to fitted along the side of the cells, though with some insulation around the cells i reckon it will still achieve the same result, or i lay a thin layer of plastic over the top of the heating element to prevent any mechanical damage to the bottom of the cells due to heat expansion/contraction rubbing at the insulation....
unless anyone has any information/experience that suggests otherwise?
my 15W of heaters are either side of the cells in PIR insulated housing and is working well, keeping them a toasty 22 degrees (= 24 degrees above ambient of -2) ? 
Alkaline
Solar Wizard
Yep... Yep... thats the 280K I know, struggling to hit 280, but hits 900WH.
So yeah at this point this is pretty much confirmed all 280K behave this way. ??
So yeah at this point this is pretty much confirmed all 280K behave this way. ??
If you save data it keeps a copy of the measurements including Ah and Wh. Seems a pity to lose that data after spending nearly a day testing.
Multiple factors come into play, including accuracy of measuring equipment and temperature. I believe the cells are rated for 25 degrees and have read elsewhere that can reduce by 20% closer to 0 degrees.
Alkaline
Solar Wizard
? really it should not be but this is what we are getting form this brand of cell maker for this particular type of cell. They also make a 304 which tests much nicer and they also use to have a 280N which also easily did 290 on most tests.
The grade B version of this cell is much worse as low as 260 with 790 WH, so very poor quality.
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