Battery range

[Callumrayb]

Hi, so I recently got my first proper ebike,
An e-movement Thunder, and the range on the battery was only around 11 miles at PAS 4-5 so I got a warranty replacement but it seems after 2 battery cycles I'm only getting around 15-17 miles. I know it's meant to be around 30-40 so I'm really confused! Any help would be appreciated

 

[sjpt]

Range varies hugely depending how you use the bike. If they quote 'up to' that means on the flat in good weather on low assist. That is usually around 3 times more than 'typical' distance on medium assist with some hills, and a lot less that that if you use full assist.

https://www.bosch-ebike.com/en/service/range-assistant/ will give a good idea how different variables/settings affect range. Even if you don't have a Bosch it shows the variation. It's easy to get it to give 100 mile range, change a few details and it will very quickly drop below 30.

 

[Callumrayb]

Range varies hugely depending how you use the bike. If they quote 'up to' that means on the flat in good weather on low assist. That is usually around 3 times more than 'typical' distance on medium assist with some hills, and a lot less that that if you use full assist.

https://www.bosch-ebike.com/en/service/range-assistant/ will give a good idea how different variables/settings affect range. Even if you don't have a Bosch it shows the variation. It's easy to get it to give 100 mile range, change a few details and it will very quickly drop below 30.

Yeah but 15 miles? I thought if I were using it conservatively I could get at least 30 miles.

 

[vfr400]

Yeah but 15 miles? I thought if I were using it conservatively I could get at least 30 miles.

It depends how hard you were pedalling. If air pedalling, 15 miles would be about right. With medium pedalling you should get around 30 miles. Lift each wheel off the ground and check that they spin freely in the forward direction.

 

[WheezyRider]

Hi, so I recently got my first proper ebike,
An e-movement Thunder, and the range on the battery was only around 11 miles at PAS 4-5 so I got a warranty replacement but it seems after 2 battery cycles I'm only getting around 15-17 miles. I know it's meant to be around 30-40 so I'm really confused! Any help would be appreciated

What voltage and how many Ah is the battery pack? How heavy are you? What's your terrain like? Lots of hills? What sort of riding are you doing? Mainly start/stop with rapid acceleration in traffic, or cruising for long periods on the flat? How windy is it? Are you riding upright or leaning over the handlebars? Is your LCD set up properly for your wheel size - ie are you actually going faster than 25 kph? What temperature are you riding in? Less than 10 Deg C?

As you can see lots of things affect range. If you still think range is not right after considering the above, you could do some basic checks to see if the battery is charging properly.

 

[gsm.terra]

What voltage and how many Ah is the battery pack? How heavy are you? What's your terrain like? Lots of hills? What sort of riding are you doing? Mainly start/stop with rapid acceleration in traffic, or cruising for long periods on the flat? How windy is it? Are you riding upright or leaning over the handlebars? Is your LCD set up properly for your wheel size - ie are you actually going faster than 25 kph? What temperature are you riding in? Less than 10 Deg C?

As you can see lots of things affect range. If you still think range is not right after considering the above, you could do some basic checks to see if the battery is charging properly.

18.6 MPH according to the specs!

Thunder V4 500W - E Movement

Thunder V4 is a top-notch and pocket-friendly edition to our series of slickest fat tyre electric bikes, providing compatibility with various surfaces.

www.emovement.co.uk

 

[WheezyRider]

18.6 MPH according to the specs!

Thunder V4 500W - E Movement

Thunder V4 is a top-notch and pocket-friendly edition to our series of slickest fat tyre electric bikes, providing compatibility with various surfaces.

www.emovement.co.uk

With those big fat tyres and that battery, I think you'd be very lucky to get 30 miles unless you are doing most of the work yourself. Throw in a hill or two, a bit of wind and probably 20 miles is good.

 

[pichipedals]

Well from their webpage I’m not too sure what you’ve got. The images show a 8ah frame sticker, the specs say 10Ah. They talk about 18.6mph and then 25km/h speeds, the latter being uk law. Their quoted range is the stuff of fairy tales, no matter which battery capacity. There are things to check which might improve your range..

tyre pressures - make sure they are suitable for the rider and cargo weight, that doesn’t mean inflate to the maxpressure indicated on the side wall, just that they are not under inflated and creating more resistance than they already do by design

throttle - kills range

power levels - obvious but the more help you get from the motor the less range, so keep levels as low as you can and pedal more

coasting - slow acceleration to speed, then coasting for a while, then accelerating again is generally efficient, but perhaps not great for a time constrained commute

brake rub - spin the wheels and check for brake rub, rotors often are not flat or distort.

weight - only carry what you need for the ride/day.

temperature - current uk temps of 5’c morning/evening and 14’c midday aren’t too bad but will give less range than a 20-25’c summer day.

 

[graywok]

18.6 MPH according to the specs!

Thunder V4 500W - E Movement

Thunder V4 is a top-notch and pocket-friendly edition to our series of slickest fat tyre electric bikes, providing compatibility with various surfaces.

www.emovement.co.uk

Specs also quote 25kmh which is actually 15.5 mph.... .

 

[Callumrayb]

Well it definitely does above 15.5 mph. I've had it at 19.5 before.

 

[WheezyRider]

Well it definitely does above 15.5 mph. I've had it at 19.5 before.

The LCD is probably set up for the wrong wheel size. Putting fat tyres on a bike not only makes things wider, but also increases circumference. So the wheel goes further per revolution compared to a "normal" tyre.

 

[RoadieRoger]

Callum I have a Fat Tyre E Bike and using the top 2 assists only get 25 miles on a mix of hilly lanes and main roads . I inflate the 20X4 Kenda on the rear to about 29 psi and the front Chaoyang Sand/Road profile tyre to 25 psi . On the same routes with a Quartz 20 in. Folder I can reach nearer 30 miles and somewhere in-between with a Pro Rider Flare crank drive . On more main roads the mileage can be improved . All my batteries are 10-11 Ah .

 

[ToVo]

I have just bought an E-Movement Thor. 250w bafang rear hub motor, 36v 10.4AH battery. Did a 12 mile circuit of my home yesterday as my first trip out. Setting 3 for most of the time, 4 on the hilly clips and 5 on the hard uphill back to the house. With sensible use of the gears, and being frugal on the throttle, I came back with around 40% remaining, so would expect another 4-5 miles in the terrain around here [hilly N Wales, not Snowdonia] before getting off to push. The bike is heavy- like around 25kg as am I [100kg] so this sort of milage is acceptable for a 10AH battery. I believe e-movement are looking at a bigger battery later this year.

 

[Nealh]

Any quoted range has to be taken with pinch of salt or even a large spoon full, lowest assist and no wind on flat terrain and one might get nearer the quoted.