New Fuse Test Video With Awesome Results!!

Yeap glass fuses is the only way if you want 100% consistent results and same current on all. Though i would say going 0.5-1A might be a tad low. Double up the fuse on max current. But thats only me :) I dont want em to break on a surge.

Good work m8!
 
What is the resistance of one of those fuses at your normal operating current?

Umm.. err.. ahh... Nice video, btw. :)
 
Elmo said:
What is the resistance of one of those fuses at your normal operating current?
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Yes .... that's an important question ... the lower the amperage of the fuse the higher the resistance and power loss in normal usage , it all depends what your normal charge/discharge current per cell is ... if 0.5 to 1 Amp , then a 1.5A fuse might waste about 4% of your input on charging and output when discharging ... that's 8%...

There's also the size of these fuses ....might have trouble fitting them in , can't solder too close to the glass or it might crack ...

I understand the desire to isolatea cell that goes slightly bad to prevent it draining the pack , but if a cell is draining at the rate of 1A this will not blow even these lowfuses , and a 1A drainwill noticeably empty an80p pack overnight !

The best option must beto go with big fuses whichkeep the running losses below 1%, andkeeping a watch for any pack which starts to lose voltage and isolate the defective cell by taking the pack to 4.2 and looking for heat.
 
Ya I agree the lower fuse will have more resistance and less is more ;) I get .1 ohm when I measure the fuses with my meter so I would need something that can measure lower. Ill see if the place I got them has a spec sheet. Right now I dont have enough solar to even tickle them lol. Ill add panels when I can afford them. Ya the plan would be to solder them up and let them sit so I could check for voltage loss and heat ect...
 
Run a known current through the fuse and then measure voltage drop across it. Seeing them glow like they did gives me the impression the resistance is rather high.
 
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