ESC Battery cutoff settings

Technically it doesn’t limit speed at all, only power

Im using a 10s4p battery and at 30% battery left and only doing 10 miles the battery shuts off. Anyone have any idea what is causing this?

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These look like 10S cutoffs

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Yeah, I deffiently did not do that lol

Some lions let you discharge to 2.5 tho. I dont think 30q do tho

Anyone?

You should repost / move this into Citadel. Super useful info I just happened to stumble here.

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@longhairedboy

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Will you look at that, a thread I started 2 years ago still holds some relevance :joy:

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@Red_souls FYI

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I got 2
4500mAh 30C 5s Lipo batteries.
The charge is 4.2 and I’m thinking my cutoff should be 3.6, anyone agree?

@Red_souls It would need to be 36v in the esc settings. There’s one setting for cutoff start (esc limits power so you’ll feel your board slow down but can still head home) & cutoff end (power cuts off).
I have my 12s at 44.4 start (3.7v per cell) & 42 end (3.5v). I also plug in two voltage alarms as I’m paranoid about cell variance.

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A 3.6 cutoff is too low IMHO

You might gain like ten meters extra range and seriously increase the risk of damage to your packs

My bad I put 3.6 instead of 36v, would that be good?

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36v would be the cutoff, hard or soft? Also do you run a BMS on your setup, it can track your battery levels wirelessly through Bluetooth, not sure if the BMS can stop your battery from going low. Gotta ask around since I got a Bluetooth BMS, I also think it tracks the charging, then again I could be wrong on this

It would appear I explicitly suggested to NOT use a 36V cutoff.

But you can do whatever you want, it’s your stuff.

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I’m trying to get the best usage out of the battery. Without it having issues, I thought 36v is the sweet spot for lipos on a chart I saw.

Also you should set your cutoffs slightly higher than the actual bottom you are targeting, because the individual cells can be slightly unbalanced which would mean one or more could be lower than the others in a 10S or multi-series configuration. On a 1S pack, you could go lower more safely.

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Ok ok, my fault. I was told by people that 36 was good but I guess some charts aren’t accurate, so aim up for 37, what happens if one of the batteries is more balanced higher then the other? Would they need to be completely in sync or one decimal off is ok

0.1V off can start causing damage if you run the pack completely empty.

Running packs completely empty is rarely achieved in my experience, because of the desire to not kickpush back home. Range Anxiety seems to always win and you force yourself to go back home before you have no range left.

You should still use a BMS (or another way like a hobby lipo charger) and keep your pack balanced as evenly as possible. An unbalanced pack is a big problem, and even bigger problem if it’s a lipo pack.

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