Quick correction: I think you meant “parallel” here. Two 5000mAh 20C packs in series would still only be “100A”.
I put “100A” in quotes because those numbers are usually very inflated. For example, my Zippy 6.2Ah 40C lipos would “technically” be rated to ~248A continuous… on 10AWG wires. Yeahh… okay… Not even close
I can top that,
I’m running 5ah Lipos with 60/120C rating. Thats a whopping 300a continuous and 600a burst on 12awg wires!!!
So what would really happen if I trusted the math and put a 300a-600a load on that battery.
Yes indeed I did, thanks for pointing that out! I’ve added something specifically noting that these are theoretical numbers only since it’s worth mentioning directly and most people won’t even consider the amps that the wires can carry without melting
I’m not an expert on wire gauges, though, so I can’t offer any specific guidance in that area.
Hmm true. Not flipped, just mistaken. I forgot Watt-hours are a measurement of energy. It’s Watts that are a measurement of power. I’ll just remove that link and mention of power until I can write up a clearer and more correct explanation of that.
Main power lines: 10 ~ 12 AWG is most common. 8AWG is used sometimes but probably overkill for most setups
Motor phase wires: 12AWG is most common, because 10AWG is just too bulky
Charging port: At least 18 ~ 22 AWG
Balance leads: 26AWG is plenty, but I prefer 22AWG
The following table could be greatly simplified for our purposes. Odd numbered wire gauges are uncommon. 8~26 AWG covers all practical applications for e-skate. Keep in mind the current ratings in this table are pretty conservative numbers
Nice, good information! I’ll link your post in the OP.
I’m aware of the most-used gauges in esk8, and I’ve seen that image before but I wasn’t sure if there was some other factor I wasn’t aware of because the current ratings seemed too low to make sense. I guess burst ratings would be much higher though.
No its not to bad though.
I learned a lot from this post, and I know now that my beloved Onan x2 has a 10s2p batterie hahahaha yeah! Feels great to know about that …
and i know it has 158wh that means it can reach a distance of almost 16km what is pretty similar to reality…awesome
I’m well aware of how the calculation works. If you read the OP you’ll see I do actually explain that.
And unfortunately, you’re wrong. C does in fact stand for capacity. It’s using the standard maths shorthand for multiplication, so 20C is 20 * C, or 20 * capacity. It would make no sense for it to stand for coulombs. 1 coulomb is the amount of charge transported by a constant current of 1 amp for 1 second, so 1 coulomb == 1 amp over 1 second. If the C in 20C stood for Coulombs, that would mean 20amp-seconds (which is nonsensical when it’s used to measure maximum current delivery, and 20A-seconds would be a very small battery, only 5.555mAh), and that would be the same for every battery. In reality the C stands for capacity, so 20C for a 5000mAh battery means that battery can deliver 100 amps nominal, but 20C for an 8000mAh battery allows 160 amps nominal.