High Discharge Battery Packs and Cogging

[kentsfreeman]

Was talking with an engineer at an ESC company and he mentioned that cogging issues on an electric skateboard at low speeds might be due to battery sag or the batteries not meeting the ESC demands.

He recommended 30c as an absolute minimum. Also he did mention that the lack of a sensor on the motors we use could be causing the problem along with battery sag.

Just wondering if anyone had tried higher discharge packs north of 50c on their boards and if they noticed improvements in performance.

 

[torqueboards]

I've used 2 packs in series of 3S 20C 5ah so when together 6S 20C 5ah with a max of 100 amp output on a dual motor board. It's worked for me.

You can fix battery sag by attaching a capacitor bank in between your batteries and esc. You can also help it by shortening your wires. The boosted board has wires that extend on the top of the board to the front battery pack which is probably longer than 12 inches. I don't think they are having any issues.

I've tried with and without capacitor banks and didn't make much difference for me.

My board doesn't cog and I've had about 5 or 6 different boards.

Doubt the sensor would make it cog besides on start-up.

I think it's a waste to go 50c on these boards. It also wouldn't many any sense considering all production boards are probably only 10c 20c.

Maybe someone with more technical background could have a more technical answer.

 

[kentsfreeman]

Thanks torque,

Kinda what I thought.

Are you using the ESC on your website on your boards?

 

[torqueboards]

Yeah, I am.