Beginners Guide to Processing 18650 Cells | Cell Database


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Bad OPUS Charger?
#21
(09-06-2017, 02:43 AM)I\m Batman Wrote: ...I don' know if it's getting hot and stops discharging till it cools down....

Yep, that's it exactly. These chargers only have a pissy little 20mm fan in them of questionable quality.
If you have a salvaged computer fan laying around, just use that to provide some supplemental airflow over the charger, this has eliminated the shut-downs for me.
I have also seen some people open up the ventilation slots in the bottom half of the case to increase airflow, I have not done this yet.
If I find that mod again I'll update with a link.
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#22
https://www.thingiverse.com/thing:2267571
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#23
I generally charge my cells, and let them sit for a minimum 5min. I then test the voltage with a mm, and write it on the cell, when I do the recheck in a week or 2, I know on each cell, what the starting voltage was
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