Can’t get a Crestline anymore, so not really an option. A little frustrating tbh.
Avinox launch 1500w M2S motor and cheaper M2 motor
- Thread starter Rob Rides EMTB
- Start date
- Thread starter
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Some dealers have some completely bikes coming in June and Crestline might have one additional unreleased colour way full bikes in June
Excellent detective work
. Interesting, actually a real custom(all-tab/tabless) cell, so slightly (4mm) thicker and (2mm)shorter than we thought. They really went the extra length to do this.Screenshot of the cell info:
What is interesting is who is Ampace or better said who is their dady, I guess most people have heard about CATL.
Xiamen Ampace Technology Co., Ltd. ("Ampace") is owned by Contemporary Amperex Technology Co., Limited (CATL) and Amperex Technology Limited (ATL).
- Joint Venture: Founded in April 2021, Ampace is a joint venture created by combining resources from CATL (a world leader in EV batteries) and ATL (a top company in consumer electronics batteries).
- Purpose: The company was established to focus on R&D, manufacturing, and sales of medium-sized batteries, energy storage systems (ESS),...
Edit: my previous calculations were not ok as I didn't use exponential cell volume growth as @terro corrected me
great to have such a fine community here 
For example if they increased the dimensions of this cell they can up the capacity also and keep the round downtube shape. Small increase in diameter, for example to 55mm it would get us a volume increase of 21%, keeping it real let's say 19% increase in volume.
19,4Ah + 19% ≈ 23Ah/cell.
10 cells x 23Ah x 3,6V = 828Wh
Doing so could potentially get us slimmer cylindrical downtubes with increased capacity,etc....
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Thought this might have been a little bit more interesting to people ?To be announced next month - The Megamo RYAL trail bike.
M2 and M2S - 4 models from 3999€/£.
Alloy Frame with removable battery, 800Wh.
@Greg Watts
Latest Info:
RYAL Model Range : Info confirmed
- Alloy 160mm Travel
- Removable Battery 800Wh (Range extenders as per Avinox system as and when released)
- 4 Models : £3999 M2, £4499 M2, £5499 M2S, £6999 M2S
- 3 Colours : All Black, Red/Black, White/Black
Reveal due in May.
UPONALONG Model Range
Carbon Drop Bar Gravel Bike - Avinox
Reveal Unknown.
ALONGUPON Model Range
Carbon Road Bike - Avinox
Reveal Unknown.
Information may be subject to change until final reveal.
Interested - Please contact your local Bike Shop (and share any more info)
e&OE
Edit...
Latest Info:
RYAL Model Range : Info confirmed
- Alloy 160mm Travel
- Removable Battery 800Wh (Range extenders as per Avinox system as and when released)
- 4 Models : £3999 M2, £4499 M2, £5499 M2S, £6999 M2S
- 3 Colours : All Black, Red/Black, White/Black
Reveal due in May.
Dealers now placing pre-orders with full details available in-store/phone.
I believe you are not calculating correctly. Cell volume (and capacity) would increase exponentially with diameter increase, not linearly.
With 54mm diameter cell we would already get 816Wh battery:
(pi*(54mm/2)^2*48mm)/(pi*(50mm/2)^2*48mm)*700Wh = 816.48Wh
With 58mm cell we would get 941.92Wh battery.
Dang yes I think you are correct, my math teacher was never to pleased
. Will fix my post accordingly. So the potential of the cell format is even higher 
BatteryMooch
New Member
- Apr 19, 2026
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Some great stuff from @Rob Rides EMTB and @Bengy22, thank you for sharing your content and thoughts!
Yea, Ampace has an incredible pedigree and is the real deal, creating incredible cells like the JP30P1 18650 and JP50P1 21700.
Here’s my battery geek take on this new 50480 cell, its chemistry, etc.…
https://www.patreon.com/posts/we-know-who-new-156017127
Yea, Ampace has an incredible pedigree and is the real deal, creating incredible cells like the JP30P1 18650 and JP50P1 21700.
Here’s my battery geek take on this new 50480 cell, its chemistry, etc.…
https://www.patreon.com/posts/we-know-who-new-156017127
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Roughshod
Member
I'm interested in the Megamo Upon if it's an Avinox drop bar gravel bike...Thought this might have been a little bit more interesting to people ?
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/C O R R E C T I O N -- Ampace/
In the news release, "One Cell Beats Six! Amflow's Flagship, Powered by Ampace, Breaks the 700Wh Bottleneck", issued on April 17, 2026 by Ampace over PR...
www.prnewswire.com
400RE in Q3 so really it's for next years riding season.
Interesting - 1100 combined will give a really big range but it's surely going to add enough weight to affect the handling. I could feel when the RE on my Mk1 Orbea Rise was in place and that was only 1.4kg (252wh). Even that's twice as much as a big water bottle.
This is interesting/C O R R E C T I O N -- Ampace/
In the news release, "One Cell Beats Six! Amflow's Flagship, Powered by Ampace, Breaks the 700Wh Bottleneck", issued on April 17, 2026 by Ampace over PR...
"Boasting 700Wh capacity, the battery has multiple advantages: three times fast charging with 40 percent higher charging rate for quick recharging; 70 percent lower internal resistance for energy saving; and industry-first 400 long cycles at 45℃, balancing endurance and durability to eliminate outdoor range anxiety."
I was really dubious about the claims that this 700 battery had the same sort of range as the old 800 (which is what dealers have been told by Amflow). They gained a little in the motor, but maybe some more in the battery?
What the stuff about 'long cycles' - what does that mean? Is that full cycle charges before dropping to 80% capacity (which I *think* is how recharge life is normally expressed)
sethimus
😠 Donald Duck 😠
a watt is a watt.
I don't know what "three times fast charging" means. Three times faster? But then "40% higher charging rate" wouldn't make sense. And faster than what?
In any case, they still only provide the same 12 amp charger at the same 36 measly volts, so it still takes over 2 hours to charge, which isn't fast enough to rely on for a bike park day. If they're going to go to all the trouble to produce new high-power cells, why not provide a new high-power charger for them? I don't see why they couldn't produce a battery that charges in less than half the time (I've made packs from regular 21700 cells that charge in about 30 minutes), but perhaps there is a good reason I'm not aware of.
But the Watts (and Watt-hours) are estimated from the individual cells specs, and some of those watts are lost to heat before they reach the motor, which is influenced by other design choices (e.g. thickness of copper/nickel connectors) as well as the cells, so I think it still make sense to talk about battery efficiency. That said, it would be better if capacity claims were based on measurements taken from the whole pack in controlled conditions, so we could compare like for like. The article below talks about the disparity between claimed and nominal capacity, but doesn't actually try to measure real capacity.
Is the battery arms race in the eMTB sector fair?
Battery capacity is a crucial factor, but many manufacturers are not entirely transparent when it comes to the actual capacity of their batteries.
ebike-mtb.com
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sethimus
😠 Donald Duck 😠
there are already range tests, it’s less range than with the old batteriesBut the Watts (and Watt-hours) are estimated from the individual cells specs, and some of those watts are lost to heat before they reach the motor, which is influenced by other design choices (e.g. thickness of copper/nickel connectors) as well as the cells, so I think it still make sense to talk about battery efficiency. That said, it would be better if capacity claims were based on measurements taken from the whole pack in controlled conditions, so we could compare like for like. The article below talks about the disparity between claimed and nominal capacity, but doesn't actually try to measure real capacity.
Is the battery arms race in the eMTB sector fair?
Battery capacity is a crucial factor, but many manufacturers are not entirely transparent when it comes to the actual capacity of their batteries.
and ebike-mtb did exactly that in their last motor test. that article is from 2024. keep up
M2S is 2,5% more efficient
700Wh Battery is 100Wh / approx. -15% less
M2S has a lot more power . . . .
Range will decrease about approx. 15%
Range tests don't discriminate between motor efficiency and battery efficiency, even assuming all other variables are held constant (e.g. bike, tyres, power modes, rider, terrain...). Has anyone done a range test of the 700 vs 800 batteries with motor and everything else the same?
Yes, that's a given. The charging times I mentioned (over 2h) were from tests and Avinox's own claims, not based on nominal figures. My point was that 36v nominal, while still very common, is perhaps lower than it had to be. For example, TQ is about 50v nominal, Specialized 3.1 is 52v, Bafang M560/M510 is up to 48v. I don't know much about motors, but batteries and chargers are mostly limited by current (amps) - basically, more current generates more heat, which can damage components as well as reducing efficiency - and higher voltage gives you more watts for a given current, so in theory it seems that increasing voltage gives you better performance at no cost. For example, a 12 amp charger gives 42*12=504 W with a 36v nominal system, and 58.8*12=705.6 W with a 52v system, which is about 30% faster.
Power to the people.
Wojtek
New Member
- Mar 13, 2026
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tough one! solves the problem of charging PX in the basement where there is no electricity. But additional battery pack to carry up and down & additional cost.
On top of that 400 RE... I feel having 900wh-1000wh internal removeable battery option would solve all those problems for me.
If the chemistry of cylindrical cells is so amazing, why would the RE not be using them? Perhaps because of the rear shock getting too close to them?
Because it would have to be 50cm long to get the correct voltage. They work well as they are in terms of space/packing efficiency, but if you start trying to stack them into a different shape for a shorter unit, then two big round circles next to each other will waste a lot of space.and provide inefficient packaging (space wise).
You need 10 cells in series to reach 36V, so 700 Wh is probably the minimum (and maximum) for this bike. That said, I think a range extender would require a voltage converter somewhere anyway (to match the voltage of the extender and main batteries), so maybe they aren't limited by that?
BatteryMooch
New Member
- Apr 19, 2026
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Thanks for that update!/C O R R E C T I O N -- Ampace/
In the news release, "One Cell Beats Six! Amflow's Flagship, Powered by Ampace, Breaks the 700Wh Bottleneck", issued on April 17, 2026 by Ampace over PR...
Wojtek
New Member
- Mar 13, 2026
- 95
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you are totally right!
it is an interesting point about having 2 different battery chemistries/capacity/charge and discharge rates.. I don't know enough but the fact there are 3rd party REs compatible with all Amflow bikes suggests it is not a big challenge. I would only think that both internal and external battery would discharge at the same time with the same rate?
As the 700wh has higher discharge rate than the RE, will pairing PX with an extender limit the continuous peak power of 1500W?
action99
New Member
According to the new RE setting you can chose if to use first the external battery and then the internal or vice versa, so is not discharging both at the same time.
Non official 3rd parties ones seem to be requiring to be use at the same time and both fully charged to start with, not even sure that they really work on the M2s with the new software. None of them seem to answer my questions at all, either their are figuring it out or currently those 3rd ones don't really work with the new system.
BatteryMooch
New Member
- Apr 19, 2026
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The range of voltages under discussion are probably all low enough for this to not be a concern but there are some disadvantages to higher voltages…
- Higher voltage MOSFETs (in the BMS) typically have higher resistance when on and that creates more heat.
- Tougher component spacing/clearance safety regulations can apply, making components more expensive and devices larger.
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