not always such a bad thing
2 Likes
Yes.
It depends on how much you want to spend, how much room you have, how much time you have, etc.
Most people won’t spend an extra $1,000 for a 5% range improvement though.
A lot depends on how efficient the existing setup is. You can get some small gains just by upgrading existing connections, wiring, equipment, etc., without adding cells to increase range.
You’re overthinking again. 
Set a budget and build the best you can for that budget. That’s,your efficiency, that’s the range you get.
3 Likes
Ummmm…capacity x voltage does = Wh. 
5 Likes
Can’t you google this shit bro?
3 Likes
yep prob
at this point will just see whether its easier to add a pack in parallel or series
you just said before its not? sorry real stupid here
simple version higher S count is better. and gear down or drop KV to compensate ( or take the higher top speed )
that thread is also where my eureka moment of understanding it was.
5 Likes
No, you’re wrong.
I said it doesn’t matter if you’re adding cells in series or parallel.
4 Likes
thanks man gonna read it
real stupid about how batteries work
cant drop kv cause my drivetrain is all loctited in place so either can take higher speed or whatever
i got spintends and might have stormcores so can go much higher voltage
ah sorry misunderstood what you said
S count x P count x V (3.7 nominal) x Ah/cell
you can group those multiplications however you want.
(12s * 3.7v ) [volt pack] * ( 9p * 3Ah/cell ) [ Ah pack] = pack wh.
(12s * 9p )[num cells] * ( 3.7v * 3Ah/cell )[wh/cell] = pack wh
4 Likes
yep your right had the calcultaion wrong before and im stupid
sorry all
though a counter point is probably whatever arrangment fits the most cells is better. 
3 Likes
Has anyone battle hardened…hub motors?
2 Likes
Can you charge and have the board on at the same time for VESC programming?
1 Like
Yea, just don’t brake, especially with an almost full battery. Chargers are really, really not made to deal with energy coming back to them
2 Likes
Cheers man. Got my Android to pair and went on my first ride this morning…lasted about 10 minutes as in my excitement I overlooked the fact I never charged the battery…
2 Likes
Yeah man, I think it’s rated at 100A max, 70A cont. I don’t think I ever went above 50A… maybe 55A. Somehow I still don’t like the idea of BMS discharging.
1 Like
What was it after all?
And lol… run it dry
1 Like
It was a new phone and I hadn’t given it the right permissions. Never had an Android before, quite different to Apple.
Hope I didn’t damage the battery having run it dry 🤦
I presume this light will turn green when the battery’s full?
2 Likes
Should be! But to double check, carefully check with a meter 
1 Like