Beginners Guide to Processing 18650 Cells | Cell Database


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Bad cable for bus bars, fuses or what?
#1
I'm facing a problem with my first packs, I can't get more than 1.3A from every pack, are 20p and testing with Imax B3 mini. 

   

I'm using rigid cooper 6mm2 cable from earthing cable, some with two cables twisted some with one, both I can't get more than 1.3A. No matter if I connect at the end of busbars or the midle.

I use 1 A glass fuses.

Any idea or test I can do.
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#2
It's either the IMax itself limiting current or the IMax cables. The cables that come with the IMax are thin and crappy. Lots loss at higher test currents.
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#3
The Imax can only Discharge at 5W So at 3V that's 1.6666667A Or at 4.2V its 1.19A

Same Calculator shows @3.95V it's 1.2658227848101264A
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#4
(08-16-2017, 05:37 PM)jdeadman Wrote: The Imax can only Discharge at 5W   So at 3V that's 1.6666667A Or at 4.2V its 1.19A

Same Calculator shows @3.95V it's 1.2658227848101264A

You are right, 1.3A x 3.95V = 5.13W, 

http://www.skyrc.com/index.php?route=pro...uct_id=200


So false alarm. 

Thank you
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#5
No problem
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#6
Take a large light bulb (or several smaller ones) of known wattage, run them through an MM in amp mode, and you can see the amp of what you can draw, till u start blowing fuses.

You could even wire a several bulbs mounted to a board where you can screw in a bulb to add to the load, or unscrew to lower the load. So, 10 3watt bulbs you could do about 30watt load test; or, 30W / 3.95V = 7.59A
Proceed with caution. Knowledge is Power! Literally! Cool 
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#7
it only charges at 50w unless you change it to 60w
It will only charge to 4.1v unless you change it to 4.2
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