Im going to use 2 6374 190kv motors i think, maby i might go to a 4p knowing now how far they can go now
Idk which cells you got, but if those are old laptop cells or something be aware that they might handle only 5-8A. So 4p is max 32A or 16A bat max for each vesc on a dual drive.
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Cool, its the nearest seaside to me, the new cycle route is great.
Only esk8 related application I see recycled cells being viable for are range extending external packs for charging while riding, charging away from power outlets, or maybe as a separate pack for lights or something.
I have used recycled cells in an esk8 battery pack in a 1S20P configuration plugged into the loop-key port to boost voltage/increase top speed. It worked well, but it was clunky and dumb because itās hard to set good vesc low voltage cutoffs when you have a 20P extension paired with a 4P main pack.
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I have 12s4p of good 30q cells with 3000mah each.
That makes my pack total 12Ah which is around 500Wh.
From that my usable power is actaly around 400/440Wh.
On pneumatics get around 30-40 Wh/Mile depending on terrain.
Riding mixed terrain I usually tend to get around 10-12 miles per charge. On long smooth rides i have managed 14-15 miles.
Hope this is useful 
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Thank you
I run a 12s8p with samsung 30q cells so 24ah or 1063wh
I did 54miles one day before getting back to my car with mixed riding and I had 18% battery left.
Also Iām heavy, very heavy.
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Wow 54 miles amazing
I wonder how you came to that conclusion. Where did the 76 Wh come from?
BTW, range calculators multiply the total available Wh by a constant close to 0.8 in order to get effectively usable Wh, exactly for the reasons you describe. Depending on how low you discharge your battery cells, a different constant may be more appropriate. Also keep in mind that the voltage drop is not a linear function of discharged Wh.
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I ran my at hummie last Sunday which has a 12s8p battery for 48km.
Start voltage was 50.0.
End voltage was 42.4.
Metr records below. I am missing a part because the metr lost connection once. Probably due to walking too far away from the board and then it did not reconnect again.
I reckon with these ride speeds I could go another 10km for sure. Most likely more.
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Amazing whats that software, can find strava, but doesnt seem to have that data ?
You mean the metr app? If so its proprietary to a metr bluetooth module
Is there anything else like that out there ?
@jonisingt35r Any hm10 module works. Just not with the metr app
Iām using mine with the ack monitor tool
True, I agree with your point.
Well the 76Wh came from estimating the difference of voltage between full pack and emptied pack (based on a 50.4v 8Ah pack) : sure voltage itself fluctuates a lot but the classic Wh figure is calculated based on 3.7 to 4.2v / cell assumption.
As far as energy density goes, it is correct but it is not the effective number of Wh usable (unless goal is to do a one way no return discharge or make a nice fire).
If I use a cell from 4.2v down to 3.4v, on average Iām cutting the use after dropping only 0.8v.
So letās say I have a 2Ah cell here ; from full charge (4.2x2 =8.4Wh) till end of charge ( 3.4x2 =6,8Wh) Iāll have used 8.4-6.8 = 1,6Wh.
The remaining 6.8wh are only there for trouble lol you canāt use them anyway. Or you can but be ready to do it risky and only once.
Figure can be multiplied by the size of battery, but you already got my point from first post 
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Iām afraid youāre way in the wrong with that assumption. It doesnāt work like that. Using the same logic I could argue that when your 2Ah cell voltage gets down to 1V, there would still be 2Wh of energy left when in fact it would be completely drained somewhere near 2.5V.
Hereās what the discharge curve looks like for Samsung 30Q, just to give you one example.
Two things to note are:
- The function is non-linear.
- It doesnāt go all the way to 0V since at 2.5V thereās virtually no energy left in the li-ion cells.
(BTW, the x-axis label is a bit unfortunate. It should read āAh dischargedā rather than āDischarge capacityā.)
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You see here at the end of the discharge the voltage drops very quickly for how many amp hours you get out of the cells once you go past the point of the graph the cells voltage fall extremely quickly to the point that you get almost no more range by discharging them lower
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Ok so in the end itās non linear, thank you guys for taking time to explain 
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Indeed you can split it into a few linear lines though, its how i made my own accurate arduino based state of charge meter for my 30Q pack. The cheap metres are very inaccurate.
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My 10s14 gets me close to 25 miles at nearly full throttle the whole time. 2AH cells tho LG.