Poll BIG BEAUTIFUL POLL: A big fixed battery vs. a small swappable battery

Which new electric dirt bike are you most excited to own?

  • Bike 1: 253 lbs (115kg); 10.0 kWh; 60-70hp bike with a fixed battery

    Votes: 6 37.5%
  • Bike 2: 231 lbs (105kg); 6.0 kWh; 60-70hp bike with a swappable battery

    Votes: 10 62.5%

  • Total voters
    16

Erwin P

Well-known member
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251
Location
Netherlands
I double-checked the numbers. Bike 2 with an 8.0 kWh battery is indeed similar in weight to Bike 1 with a 10.0 kWh fixed battery. If you extrapolate the size of the swappable battery to 10.0 kWh, its weight would become 90 lbs (41 kg). The total weight of the bike would then become 266 lbs (121 kg), which is heavier than Bike 1. The weight penalty for having a huge swappable battery is 13 lbs (6 kg), which is what I was told by those who looked into this topic closely.
The big question is. Is that just the battery weight or everything around it to come to a same feeling bike as well?
 

Erwin P

Well-known member
Likes
251
Location
Netherlands
I've seen the breakdown and sure the battery weight sounds reasonable.

However with a swappable battery that is not a structural part there comes quite a lott of extra frame. Not only to hold it, but if you want the same stiffness when going around an object instead of using the object you will need way more material.

Edit: And how swappable is a 25-33kg battery. If you have to pull it out from under the seat that's quite the lift. If it has to be pulled down the bike and lifted in the Starks battery could be considered swappable as well.
 

Johnny Depp

Well-known member
Likes
185
Location
Austin TX
This makes sense for fleets or city centers with high density of EV.
Maybe we'll see battery banks downtown in Europe and NA in a few years however it would probably take much longer (if ever) to appear at MX tracks.

BTW this was the reasoning behind Honda, Yamaha, Piaggio, KTM founding the Swappable Batteries Motorcycle Consortium (SBMC) in 2021 (dedicated to low power scooters and small commuter bikes). However Honda, Yamaha (and Kawasaki who had later joined) left SBMC in 2025.

On a more positive note, Gachaco, gathering the big 4 japanese OEMs and Eneos, focuses exclusively on Japan and last year they've opened their first battery swapping station for small EV scooters in Tokyo.

Taiwan also has the Gogoro network and as always, China is ahead of the game with over 1300 NIO stations.

So we may come to that for small commuters in a few years however I doubt battery standardization would concern "performance" vehicles for which OEMs will want to retain commercial advantage, and good luck finding a station at your favorite enduro loop in the middle of nowhere 😆
Pretty hard to standardize something that is constantly changing.
 

Theo

Well-known member
Likes
250
Location
Italy
Some people overheat dirtbikes batteries, so maybe a 8.0 kwh swappable one might satisfy the need of a pro rider who can ride extremely fast for 30 minutes and then need a cool battery ready for the next session.
For example:
• he/she rides for 30 minutes with battery #1
• his/her team readily swaps the batteries and he/she can start riding again after 5 minutes, but will probably wait more to rest anyways
• while battery #2 in used on the bike, battery #1 gets fast recharged while being cooled down with fans, in an hour
• the rider rests for half an hour -at this point this person has already completed two fast sessions- and then gets ready because the mechanics are installing battery #1, just recharged
• then, after 3 30 minutes intensive sessions, I suppose that either this person will go home or will start riding slower with less demand on the batteries.
• at the end of the day, the rider will enjoy some videos from @Erwin P's youtube channel where he and his girlfriend ride a Versys 300 in motocross tracks in muddy condition and will comment: "and I thought I was skilled"
 

Erwin P

Well-known member
Likes
251
Location
Netherlands
Hahaha thanks for the compliment!

We are now in the rocks at Pascuet and Boade. 6,5kWh battery is near to undrainable with out skills here.
But as you know we are sandriders 😅

Edit: And given 5 minutes and have the holes drilled for the battery bolts me and the GF will have the Stark battery swapped as well.
 
Last edited:

Motophyllic

Well-known member
Likes
338
Location
NY
What about a 209 pound 2 kWh battery option for your 8 kWh bike. Not everyone needs 4 laps at full power or long trail rides. Freestyle guys could do a quick show and swap a new battery in when needed, but enjoy all the weight savings.
 

markhamr

Well-known member
Likes
80
Location
blaxlands creek australia
I am with theo
That formula seems right to me 4 x 30minutes
I ride a mx
I asked flux for 6.5kw
Easy swap like a ultra bee
would be the go.(no tools)1 minute. more like 20 seconds in a hurry
The lowest weight possible please,without compromising balance
or fitting sh&t that doesn't work. Like lightweight tubes that don't hold air.
 

Erwin P

Well-known member
Likes
251
Location
Netherlands
I think one of the main reasons why their StormBee is so heavy (127kg) while being smaller and way less powerfull is the removable battery.
You should have a look st that bike and see how much bulk there is around that battery.

And imagine people complaining about a bike being heavy lift a 35kg battery from under the seat. In the Ultrabee that's allready a heavy job with just 20kg and a way lower bike.
 

markhamr

Well-known member
Likes
80
Location
blaxlands creek australia
We all know the storm bee is not a good mx bike erwin
That's why i bought a stark.
Replaceable makes it a lot more viable for a lot of riders.
My bike was useless as a mx bike untill the gearing change
fixed the ability to get through a days riding
thanks again jd.
Can you manage the weight of the stark battery when you change it.
I am thinking the 1.2 looks like a great improvement .
I would go get one but the company's antics have put me off.
Maybe in a few months when the initial price drops at least i could trade my mx1 and get rid of it.
I can see why the push is more towards general offroad .
Motocross bikes are a more refined breed ridden by few in comparison.
The ex hits the mark.
 

Erwin P

Well-known member
Likes
251
Location
Netherlands
I'm not talking about the StormBee being a good or bad bike. Just a comparison to what kind of additional bulk we are talking about when the battery needs to be swappable.
1756366181394.jpeg

I can tell you the Stark battery is very heavy to work around. Sure lifting it is easy enough. But now lift it above seat height and try to slid it into something carefully. And if you slide it from underneath and attach it with some clips or something... Then you might as well call the Stark battery swappable. With any sort of usefull range you're talking 30kg at least. That's quite the handfull.
 

UKLee

Well-known member
Likes
94
Location
UK
I'm not talking about the StormBee being a good or bad bike. Just a comparison to what kind of additional bulk we are talking about when the battery needs to be swappable.
View attachment 14541

I can tell you the Stark battery is very heavy to work around. Sure lifting it is easy enough. But now lift it above seat height and try to slid it into something carefully. And if you slide it from underneath and attach it with some clips or something... Then you might as well call the Stark battery swappable. With any sort of usefull range you're talking 30kg at least. That's quite the handfull.
The freeride battery set up works quite well, 4 threaded rods and no plug just contacts, less chance of dropping dirt in the contacts.

What bits are on the stark that allow the battery to be charged ? in other words could you get a gen 1 loom with charger plug and charge the battery or does it need the vcu and maybe bits that are built in to the drivetrain/inverter?
 

markhamr

Well-known member
Likes
80
Location
blaxlands creek australia
My original thought was to have 2 bikes.
But then the bike did not have the performance to warrant going there.
A stark 1.2 with a 6.5 kw battery would get me where I want to be.
I probably should test a stock one anyway.
 

FYR

Well-known member
Likes
112
Location
Central Valley, CA
What about a 209 pound 2 kWh battery option for your 8 kWh bike. Not everyone needs 4 laps at full power or long trail rides. Freestyle guys could do a quick show and swap a new battery in when needed, but enjoy all the weight savings.
Finally, a seriously considerable option over just riding our gas bikes. So, "Motophyllic", how do you make that happen - 209 lbs.??? I'd bite on that rig with 2 batteries and my generator.
 

UKLee

Well-known member
Likes
94
Location
UK
So the ktm freeride E-xc battery......

"KTM's Freeride E battery has evolved from the early 2.6 kWh units in models like the 2014 E-Freeride and 2015 E to the larger 3.9 kWh, 260V batteries in the second-generation 2017/2018 and 2020 E-XC, offering improved range and power thanks to advancements in lithium-ion technology. This second-gen battery, made by Sony, increased capacity and allowed for higher power output, though it also slightly increased charging times."

Is swapable between the early and later bikes, I assume the same case but with better battery cells.

Could the same be done with oiur 6.5 kw 1.0 battery to bring it up to 7.2 but it still fit the 1.0 loom ?
 
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