I’ve noticed that the new NOCO chargers from andymark only charge the batteries up to around 100-110% compared to the 130% from the previous chargers. I was wondering which is better for battery health and performance during a match.
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We started using NOCO chargers last year and have already noticed a big difference in battery life. These chargers also have a desulfation feature that the older chargers do not. We bought 9 new MK batteries last year and about half of them are still good enough for us to use this year. (note: we load test each one using the west mountain radio battery tester each year)
You can look at our spreadsheet from our testing here: https://docs.google.com/spreadsheets/d/1qwdxiZfoCcKCOYakFtsB8OIxzzBYlLTTXEM5wdaazjQ/edit#gid=0
Look for batteries 2023-01 through 2023-09. The red ones at the bottom were the worst 5 and are getting demoted to practice batteries and replaced by new ones this year.
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Aka, the NOCO chargers are better for the batteries?
Yes that has been our conclusion. The NOCO chargers seem to prolong the life of the batteries.
So what should I tell my students (and myself) who are used to seeing 130% on the battery beaks and now they aren’t seeing that?
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Search CD for “surface charge”… It may help your students to understand what the 130% value means.
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Curious about what values you are using for the CBA testing.
We are using 10.5 volt cutoff and 7.5 amp draw.
I checked with our mentor and those match the values we use. 
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So, when using the CBA, should we let the surface charge dissipate or can we run it once we pull it off the battery?
Surface charge will dissipate extremely quickly (<1min), it shouldn’t affect your overall ah results if you just start the test instead of worrying about it.
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