Stepandwolf
Solar Enthusiast
- Joined
- Nov 14, 2020
- Messages
- 668
Hi guys....rather than branch off an existing thread, I thought I would try and figure this out here. As some of you know, I received 8 EVE LF280 cells that were presumably made first half 2020 based on our interpretation of the date codes and the assumption they didn't put old codes on new cells.
In the spreadsheet provided by the vendor from EVE, it shows that 7 of the 8 tested at 291.XXXX and one tested at 289.XXXX. I charged the 289 to 3.65V and want to load capacity test it, something I have never done. I purchased Will's suggested load tester. If I remember right, will suggested setting the low battery cut off at 2.6V and said something about "all lithium". In earlier threads here, I have seen suggested values of 2.3 and 2.4V. The product sheet for the battery suggests 2.5v for testing to their specs. Presumably, the lower voltage you go to, the higher capacity result you will get? Can you guys help me determine the proper low voltage cutoff value.
Next, I connected the load tester to the battery I charged and tested to 3.65V, but the tester shows 3.47V? Will that error result in an incorrect capacity value?
You guys new I said I would likely blow something up, half in jest, but only half. Please help me do this correctly.
Thanks!
Low Voltage Lew
In the spreadsheet provided by the vendor from EVE, it shows that 7 of the 8 tested at 291.XXXX and one tested at 289.XXXX. I charged the 289 to 3.65V and want to load capacity test it, something I have never done. I purchased Will's suggested load tester. If I remember right, will suggested setting the low battery cut off at 2.6V and said something about "all lithium". In earlier threads here, I have seen suggested values of 2.3 and 2.4V. The product sheet for the battery suggests 2.5v for testing to their specs. Presumably, the lower voltage you go to, the higher capacity result you will get? Can you guys help me determine the proper low voltage cutoff value.
Next, I connected the load tester to the battery I charged and tested to 3.65V, but the tester shows 3.47V? Will that error result in an incorrect capacity value?
You guys new I said I would likely blow something up, half in jest, but only half. Please help me do this correctly.
Thanks!
Low Voltage Lew
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