im running a test of the electrode magnet with a tiny film of Permatex
at 7.5 amp discharge the negative magnet was running 3f/2c higher than battery temp, other tests with no Permatex the battery and magnet were same temp.
heres the results
pulled magnet to wipe off Permatex
re did the test no Permatex, both magnets reached 90f and battery 88f. heres the results
re applied Permatex to retest magnet temperature
with Permatex positive magnet hit 90f, battery hit 90f and negative magnet 93f, lets compare first Permatex to no Permatex and then Permatex again.
I cycled the Permatex 6 times, the battery loses about 3mah/cycle
after the first discharge/charge the capacity was 3080 after the 6th cycle the capacity was 3063mah
17 mah difference divided by 6= 2.83mah
I cleaned the magnets and battery and started the same 6 cycle test
the zke pc software is very buggy, I might have to go get another laptop dedicated just to the tester, heres the frign 3amp glitch again
the glitch happened between 3-1 and 3-2
but after I had changed the magnets and did the com disconnect and tester off routine the first cycle stopped recording mah again so I got this reading after first cycle from tester
3073mah, no Permatex is 10mah higher than last reading of 3063mah w/permatex
once I got the reading, turned off tester, closed program, re opened program, turned on tester, try to connect through comport and nothing, I wiggled the usb, still nothing, unplug the usb from computer and plug back into computer, I got the bdoop sound from computer, then clicked connect/com port 3 and everything worked again
im not a computer guy but im wondering if its the USB to TTL serial cable?
ive been messing around trouble shooting, if you bump or move laptop the usb to ttl serial cable will cause the program to freeze.
the 3amp scratch on charge is there no matter which battery and no matter which magnets used, its the way the charge amps are stepping down in the program I guess. its not the batteries or magnets you can really see it from 3amps to 1.6amps
I haven't been able to recreate the glitch on the discharge, im working on that right now. battery temps peaked at that glitch and im wondering if the copper electrode expanded and pushed the magnet off the cell. ill be playing with that today
having troubles finding a new 40T for testing, found one in Ontario, itll cost me $40cad total to get it here. I can get 2-40t and 2-p42a from imr battery for about $80cad from the USA but im worried about shipping time and border BS. Called molicel in maple ridge bc, sales department was an answering machine and they haven't returned e-mails or phone calls.
anyone know where to get a 40t and p42a in Vancouver bc area?
im doing the 0.8a discharge to 2.5v capacity test to the 7amp/40T just to see how its doing