ebike range on full charge

[999zip999]

I get about 30 miles on my 20ah 80Volt a123 pack. Running a 2810 torque motor at 30 amps between 35-42 wh/mi. About 30 mph. Always WOT as if the spring is broken. Good you have a C.A. now turn down the amps till you can stand it. Hills and wot kills batteries as you have a monster motor 3500 watts. Can your battery support 3500 watts. I'm not triing to rain on your parade, but helping dial in your battery. I think you have been biten now.

 

[heavymetalthunder]

My Phoenix cruiser 4840

Nice bike have fun riding.

 

[polskiski]

I got a battery from electricrider.com its a 48v 20ah (size 26700x 96cells, 3300mha each)
from research and then from electric rider I found out that they are rated continous at 3c.
so 20ah @3c would be 60amp continous. And I dont ever do that. I use cycle analyst and i see that usualy I use no moe then 12. When cruising maybe 5-6 amps.
it all depends how quickly you accelerate. Even going fast does not take me up to 40 amps when I take time accelerating. Thats why I love cycle analyst because with easly available information on the internet I can make this battery last not only more then 60 miles on a charge but hopefully for many years to come.

 

[docnjoj]

Us slow pokes get pretty good range. Recumbent trike really do reduce air resistance but we go about 15 mph on the bike trail and get pretty good mileage. We usually use 10 ah to go 20 miles and since we both have 720 +/- watt packs we have a fair reserve.
otherDoc

 

[LockH]

Help is on the way! If you are a member of GEBA ("Global Electric Bicycle Association"), local chapters are setting up pack swap/recharge stations (maybe coming to a community near you). If you subscribe to any of the generic battery sizes, and can plug them into your bicycle (think "giant battery-electric cordless power tool), "range" will be *unlimited* for most urban areas, and for many trips in between (plus one really big recharge/swap facility at GEBA party cottages EVerywhere).

 

[KarlJ]

I got 82kms out of my EM3EV pack, 29E cells in the "bottle" mount 48V 13S4P for 11AH Paul rates them at.
Using the 350W MAC / 2 speed road bike.

Did a charity ride today 80km "NOT A RACE".... BUPA Bike Hike....
Like hell it wasn't, there is a big bike race in Perth this week and tons of Pro's turned out for some "training".

Plenty of banter with non-powered dudes obviously.... You're CHEATING!

Responses I have come up with.

I chose lithium and copper ........You chose carbon fibre.
So are you......Your bike has gears!
Are you joking, your front wheel cost more than my whole bike.
i gave up smoking 3 months ago......whats your excuse?
Sorry mate i can't afford to not work so i can go cycling.

Mistakes i made.
should have gone out hard with dudes at the front and seen how far i could go.
as a result spent lots of time on my own ahead of the Sunday crowd but left by the ball of muscle types who train 7 days
and it was windy so i think that cost me some time.

Anyhow..... I think it works out almost perfectly with my pack that i have 11 usable volts from 54.6V start and 43.6V finish. That runs them from 4.2Vpc to 3.35Vpc when LVC on controller kicks out. Avg speed for those interested....bang on 35km/hr.

Battery fell over about 2km up the road after the finish (LVC set at 43V , BMS is somewhat lower than that but no point thrashing them any harder)

Anyhow, always wondered what it would be like to be in the peloton at 45km/hr and the answer is.....crowded and dangerous but a helluva lot easier to punch along as a pack. "cheating"

 

[Hillhater]

No disrespect to anybody here, but this really is pointless asking what range you get unless it it a totally NON PEDALING exercise.
And even that data is not of much use unless you specify the speed, terrain, total weight, wind conditions, tyres, frame type, riding position, etc etc.....
... !
Any other range figure that includes any amount of pedaling is random worthless data.

 

[KarlJ]

smoker 25 years (quit 3 months ago) 185lbs, essentially capable of 40km ride at a stretch un-assisted.

Bike flat bikkie 43km/h down to 38kmh end of ride, bike trails very little/no pedaling, basically flat terain good for 40kms.

Better?

 

[dogman dan]

That is true, how far you can push your ebike with the pedals is pretty much infinite if you are young and strong.

I tend to state range lower than many for pack size for a given commute purposes by including at least 10% more for later when the pack is chilled, or old.

I am pretty confident that 750wh will take almost anybody 20 miles without slowing to a crawl. But that also assumes 75 w of pedaling. Speed slow enough to be able to pedal, 20-25 mph. By pedaling harder but not too hard for an old fart, that can be increased to 30 miles for sure, or even more if the road is not too hilly.

 

[friendly1uk]

1ah per mile has been my rule for 36v. .75 ah per mile for 48v.

These numbers show that carrying more voltage than needed is not a good thing. For a 15mph bike you probably don't want any more than 36v as it just lowers efficiency. If you added more cells, you would do so to increase Ah capacity. If added to increase voltage you won't get the same range improvement, although top speed is increased, where power is used up even quicker.

If range is the most important factor, your bike should be capable of little more speed than you actually require. Running a 35mph bike at 15mph can't be ideal.


Edit: This post is just my meanderings through the facts, It is not actual proven fact, I'm expecting some feedback if it's not though

 

[Joseph C.]

32 km range on 52.8 volt 11.5 amp/hr battery with a 41/42 kg mountain bike on Schwalbe Big Apples 2.15 inch tyres to 50 psi at an average speed of 30 to 32 kph. That is at 80 depth of discharge (DOD). I can squeeze out just under 41km if I fully discharge the battery. That is at a lifetime average consumption of 14.7 watts per km over a total distance of 6,000 km.

I have a second one-KW/hr battery that gives another 54/55 km at 80 per cent DOD or 71/72 km fully discharged. I have only fully discharged the primary battery on two occasions when I was still new to ebikes. The secondary battery has never been discharged beyond 80 per cent DOD it adds another nine kg to the weight.

Bicycle is (an oversized for me) 21.5 inch Giant Boulder 500 mountain bike complete with a Veltop canopy (on all-year round), large Y frame Carry Freedom trailer with a Zarges Eurobox 40705 aluminium case bolted on top. Trailer weighs 7kg, box weighs 7.5kg and I usually carry a minimum of 15 kg worth of stuff, locks, spares, laptop, gear etc. I have carried up to 75 kg in the trailer so all of that affects the average consumption figure. The trailer is nearly permanently attached to the bike.

That's with pedalling continuously and providing about 100 watts of assist. Terrain is mostly flat with short hills.

I have weighed between 63 and 68 kg during that time and clearly winter clothing and footwear could add another five or six kg to that figure.

Obviously travelling into a headwind means consumption is much worse and could be closer to 17/18/19 watt hours per km if it is a gale. I rarely travel more than 20km without bringing the secondary battery with me.

Edit: In winter from November to early March I use Schwalbe Marathon Winter tyres so that also effects the range and lowers the average consumption efficiency.

Hope that's the last of the typos.

 

[LockH]

"Help is on the way! If you are a member of GEBA ("Global Electric Bicycle Association"), local chapters are setting up pack swap/recharge stations (maybe coming to a community near you). If you subscribe to any of the generic battery sizes, and can plug them into your bicycle (think "giant battery-electric cordless power tool), "range" will be *unlimited* for most urban areas, and for many trips in between (plus one really big recharge/swap facility at GEBA party cottages EVerywhere)."

Ummm... I suppose some may be blind to the implications of the above?

Big hint: The last 48V 10Ah Li-ion pack I had (still have, almost new, only the new (?) trike frame apparently may have fallen apart... in 2-3 different places), I can lift/carry in one hand (left or right, though currently working on my right side/arm/hand), and I honestly haven't checked, but my "personal best" is probably well less than one minute to plug the electric cord plug into the battery pack plugin.

(Or is anybuddy here in a rush to get to the next vehicle (operator) "accident" maybe?)