This test was to see the available capacity when using a standard 12V charger on a 6S configuration LTO battery pack.
First test: I set absorption till HVD, which was around 18V. Without much surprise, I pulled full capacity (20Ah). This test was to ensure that I was pulling 100% capacity at this C rate, which was .25C.
Second Test: I attached my 12V AIMS Power battery charger on the pack, and an absorption of 14.5V was reached. Then I did a capacity test.
And I only pulled 78.45% of the total capacity! Check it out:
14.5V is a standard charge absorption voltage, and I am sure I could get a better results if I modified it. I just figured it would be interesting to see the measured capacity when using standard 12V charge profiles. Using a flooded cell profile with daily equalization would improve capacity test results. But if you plan to run your system with a max absorption of 14.5V, you will only pull around 80% of the total capacity.
Pretty interesting!
First test: I set absorption till HVD, which was around 18V. Without much surprise, I pulled full capacity (20Ah). This test was to ensure that I was pulling 100% capacity at this C rate, which was .25C.
Second Test: I attached my 12V AIMS Power battery charger on the pack, and an absorption of 14.5V was reached. Then I did a capacity test.
And I only pulled 78.45% of the total capacity! Check it out:
14.5V is a standard charge absorption voltage, and I am sure I could get a better results if I modified it. I just figured it would be interesting to see the measured capacity when using standard 12V charge profiles. Using a flooded cell profile with daily equalization would improve capacity test results. But if you plan to run your system with a max absorption of 14.5V, you will only pull around 80% of the total capacity.
Pretty interesting!