Battery capacity

[WoodCube]

Hey. How much distance do you guys get on your lower end batteries, ( say 174wh for example) on a 500w motor? Please include your weights.

[esaj]

My signature states my distances in different temperature/wind conditions with the original Firewheel F260 -batteries (2 * 132Wh packs, 264Wh nominal, 268Wh measured the last time I charged them with Charge Doctor). 550W motor. The distances are measured with bike computer, error should be fairly minimal (although I used a smaller tire diameter in the computer than what the wheel actually is to account for the tire pushing in a bit with weight, so if anything, the numbers are lower than in reality).

Edit: Checked the values from another thread, as I no longer remember them:

I've used the table-value for 16" tire circumference (1272mm) on my computer, which is lower than what the real circumference without weight is (1310mm), but I expect that with weight on top it gets pretty close to the table value (haven't ever bothered to measure the circumference with weight on top).

[WoodCube]

Thanks. Looking to hear more averages so I can determine if I should skimp or not. Don't really plan to do great distances.

[esaj]

Oh yeah, probably worth mentioning also that I'm on the light side (57kg + safety gear, so probably around 60kg), heavier riders could get lower ranges, mostly probably depending on the amount of uphills.

[zlymex]

I'm 72kg and have tested my three EUCs on a 'typical' condition(no wind, no slope, speed 15-20km/h, +25C, tire pressure normal)
Gotway MCM2 260Wh, 9.0Wh/km
Gotway MSpuer2 MS 680Wh, 9.0Wh/km
IPS 122 240Wh, 7.6Wh/km. I did ride 30km once on a single charge.

We have a rough theory saying it takes 10Wh to ride 1km
Another old approximate saying is that one cell(of 18650 battery) equals 1km

For an 174Wh EUC, there might be 25% remains before the lo-batt warning, that will give 130Wh of useful capacity which equals 13km  roughly.

[Jason McNeil]

@zlymex, some brands/models also have pretty conservative out-of-bat thresholds which obviously reduces range. Hobby report his Gotway MCM2 was reserving 33% capacity on 'empty'. Same with the KS 680Wh, before the reduced low voltage threshold from 55v to 50v (this was changed as a 'special' request just for my consignment...)

[zlymex]

On 2015/10/18 at 1:41 AM, Jason McNeil said:

@zlymex, some brands/models also have pretty conservative out-of-bat thresholds which obviously reduces range. Hobby report his Gotway MCM2 was reserving 33% capacity on 'empty'. Same with the KS 680Wh, before the reduced low voltage threshold from 55v to 50v (this was changed as a 'special' request just for my consignment...)

That's true. One of my friend's K5(of Kaabo) has a very high till-back threshold of 58V which probably with 35% remains.
I've never tested my MCM2 for actual range or threshold because it mainly used for skill ride.
I did ride my MSuper to warning level several times which I measured at 55.6V(equivalent to 3.475V per cell). 
There are two instances where I continued riding my 18", after low voltage warning, for more than 10km without till-back.
The till-back voltage is said to be 52V(3.25V per cell) for MSuper2.

 

[Chrisxr2]

Not a 500 watt motor, but on My solowheel xtreme with 1500 watt motor on mixed terrain i average somewhere around 8 to 10 miles a charge, though i am 97.5 kilos and usually have all my gym stuff on my back so probably 100 kilos, never tried it on just the flat yet, i believe the tilt back and vibration for low battery is about 20 percent if the beta app is correct.