State your pack and cutoff settings
Easy enough? 
I’ll start
Lithium ion
12s6p 30q
37.8 cutoff start
34.8 cutoff end
-----------‐‐------
10s3p 25r
31.5 cutoff start
30 cutoff end
6 Likes
are those your cutoff settings? because they seem like their for 10s
2 Likes
Was looking at my koowheel settings XD it’s a 10s3p
1 Like
10s4p 30Q
Start 32v
End 30v
12s1p? Lipo (2x6s in series)
Start 42v
End 40v
2 Likes
12s7p 30q
2.9v per cell start
34.8v
2.7v per cell end
32.4v
3 Likes
8S lipo (33.6V charge)
cutoff start 30.16V
cutoff end 29.68V
10S lipo (42.0V charge)
cutoff start 37.70V
cutoff end 37.10V
10S li-ion; super-conservative (42.0V charge)
cutoff start 36V
cutoff end 34V
10S li-ion; conservative (42.0V charge)
cutoff start 35V
cutoff end 32V
10S li-ion; aggressive (42.0V charge)
cutoff start 32 - 33V
cutoff end 30V
10S li-ion; max-range (42.0V charge)
cutoff start 36V
cutoff end 30V
10S li-ion; range + conservative (42.0V charge) {my preferred}
cutoff start 36V
cutoff end 32V
12S LiFePO4; (43.8V charge)
cutoff start 34.5V
cutoff end 33V
12S lipo (50.4V charge)
cutoff start 45.24V
cutoff end 44.52V
12S li-ion; super-conservative (50.4V charge)
cutoff start 43.2V
cutoff end 40.8V
12S li-ion; conservative (50.4V charge)
cutoff start 42V
cutoff end 38.4V
12S li-ion; aggressive (50.4V charge)
cutoff start 38.4 - 39.6V
cutoff end 36V
12S li-ion; max-range (50.4V charge)
cutoff start 43.2V
cutoff end 36V
12S li-ion; range + conservative (50.4V charge) {my preferred}
cutoff start 43.2V
cutoff end 38.4V
14S LiFePO4; (51.1V charge)
cutoff start 40.25V
cutoff end 38.5V
16S lipo (67.2V charge)
cutoff start 60.32V
cutoff end 59.36V
16S li-ion; super-conservative (67.2V charge)
cutoff start 57.6V
cutoff end 54.4V
16S li-ion; conservative (67.2V charge)
cutoff start 56V
cutoff end 51.2V
16S li-ion; aggressive (67.2V charge)
cutoff start 51.2 - 52.8V
cutoff end 48V
16S li-ion; max-range (67.2V charge)
cutoff start 57.6V
cutoff end 48V
16S li-ion; range + conservative (67.2V charge) {my preferred}
cutoff start 57.6V
cutoff end 51.2V
18S lipo (75.6V charge)
cutoff start 67.86V
cutoff end 66.78V
18S li-ion; super-conservative (75.6V charge)
cutoff start 64.8V
cutoff end 61.2V
18S li-ion; conservative (75.6V charge)
cutoff start 63V
cutoff end 57.6V
18S li-ion; aggressive (75.6V charge)
cutoff start 57.6 - 59.4V
cutoff end 54V
18S li-ion; max-range (75.6V charge)
cutoff start 64.8V
cutoff end 54V
18S li-ion; range + conservative (75.6V charge) {my preferred}
cutoff start 64.8V
cutoff end 57.6V
34 Likes
Wow, that’s balls to the walls 
7 Likes
Was thinking the same thing
2 Likes
For all of my 10s packs:
-
Cut off start: 32v
-
Cut off end: 30v
3 Likes
has anyone experience if it really pays off distance wise to go as low as 2,8v cutoff end with li-ion packs ? i mean compared to values over 3,2v
Got cutoffs when I had it a little higher. Now I can still climb hills at 3.2v per cell or go on 45 mile rides (once or twice a year). Usually never reach that low of a voltage tho.
1 Like
I’ve heard of this being detrimental to the pack, as some BMSs don’t actually charge cells below a certain charge.
Also I feel like I remember seeing an argument that the density of energy between 3.0v and 2.0v is pretty low, meaning it’s super easy to overshoot how much you are discharging the cells
1 Like
I’d be really worried about reducing cell lifetime in those scenarios. But I’m glad this works for you and I’m glad you shared this with us.
At 7P though you have a bit more flexibility than, say, a 4P pack
2 Likes
The li-ion discharge curves drop off a cliff at the end, so the amount of extra range from 3.0V/cell to 2.8V/cell is very, very small. Also, the lower the voltage goes, the more the cells dislike supplying large currents.
2 Likes
I wonder if that’s resting voltage or under voltage sag? Here is my ride I would have hit cutoff 10mile short of this ride due to sag at anything over 2.9v per cell. Resting voltage is still above 3v per cell
1 Like
Why start so soon on the cutoffs? This way sag becomes really apparent
I have used start 30, end 29 for 10S, this lets you enjoy the battery until the end without losing hardly any power
4 Likes
The idea in that scenario is that you can feel the backoff start and turn and start going towards home
That’s the whole idea
1 Like
Oh that makes perfect sense, not for me, I like the adrenaline of never knowing if I will get home 
Worked fine so far
4 Likes
This thread is just what i needed right now. I was wondering what cutoff settings i should use with my 10S 30Q pack, knowing that the voltage reading from the flipsky 6.6 dual i’m using is jumping quite a bit.
For now i just used the default vesc tool settings for 10S, but i’m worried that i’ll get weird behaviours near the cutoff.
2 Likes
In my experience, that actually does work way more often than not, surprisingly.
3 Likes