I got a hold of 200 2000mah 18650’s, which are 10a continuous / 20a max, and not certain that’s going to be good enough for my pack. I figure a 12v3p, but not certain if I should go with 4p.
I’m looking at using v4.12 of Vedder’s ESC, which has a continuous 50a and either the 6355 190KV or 6374 190KV 3150W. Both are 80amp max.
With 12s/3p i’m looking at 30a continous / 1152-1512 watt (cutoff at 3.2v to 4.2v x 12) or 60a / 2304 - 3024 max (2664 watt peak at nominal voltage.
The above post mentions people topping out the amperage (meaning they have packs that can handle up to 150amp), so my concerns is I am going to be working with a weak power source? Should I ditch these batteries for this project?
In summary, what are people using? The video walking through how to configure the VESC has a max amp setting of 40 amp (I believe at 12s, but might have been 10s), but
^^ at 27:21 configures the VESC at 30amp, in a dual setup (so 60amp) (12s)
Sets his at 25amp (total) 12s.
Does it all really matter that much? I am not a small person. 220lbs. Will going with the higher watt motor be redundant unless I can increase the amperage, or am I way over thinking this since this really only comes into play going up hill and getting up to speed (although acceleration is one of the main points of performance I am concerned about).
I’ve read some details that a larger watt motor pulling the same current will provide more torque (I couldn’t find much detail or proof behind this, so I am not certain whether that’s true), but provide less distance, which isn’t a major concern for me (I can always run another parallel if needed), but in my case, a 3p pack will max out at 2664 peak watts at nominal voltage, so would it even make sense to go with the 3150 watt motor?
Long story short, I am building a battery pack and need to know what motor to buy and what type of pack to build and whether I should get some high C rated batteries to do that. It will also decide what BMS I use. If I need to get closer to the max 50amp continuous the VESC can handle, i’ll just add more batteries and get a more expensive BMS (vs the 30a BMS I am looking at).
What’s everyone else working with? Do we have many lower C rated li-ion packs being used for E-Skates?