New kalkhoff batteries.

Blew it

Esteemed Pedelecer
Jun 8, 2008
1,472
97
Swindon, Wiltshire
Brilliant!

The 18 ah battery will open up longer rural trails without carrying a second battery.

Please form an orderly queue.......... behind me. ;)
 

flecc

Member
Oct 25, 2006
53,488
30,803
I don't like some of these changes if they are being imposed on the Panasonic motor unit models. The Kalkhoff Panasonic high power mode on EU legal bikes was originally times 1.3 to 1, then increased to 1.5 times to 1 which I feel was a sensible move, but they are now dropping it to 1.2 times to 1, the lowest yet. I wonder if the 9% motor power increase for high power mode will even be easily detectable (45.5% from the rider, 54.5% from the motor instead of 50% each in normal mode). The high speed models are dropping from 2 times to 1.75 times to 1, not so bad.

This to me is a backward step, the choice of enough power or longer range should rest with the owner.

Why have they done this? As ever, higher capacity within the same battery case space requires greater cell content density, in turn leading to increased current discharge restriction. Using round cells to increase cooling exacerbates this since case space is less well utilised. I suspect therefore that this is linked to that and the longer life they are claiming, since high current strain shortens life.
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tillson

Esteemed Pedelecer
May 29, 2008
5,253
3,197
but they are now dropping it to 1.2 times to 1, the lowest yet.
Hi Flecc

From the Web Link:

To ensure an efficient and comfortable uniform evolvement of force, the support level of the motor automatically matches the speed. In comparison to last year, the power-performance curve could be even improved. The maximum support level, for example, comes to 1:2 instead of 1:1.5 (respectively 1:1,75 for fast Pedelecs) for all models. This means that more energy is proportionally used for the pedaling power of the cyclist - for a much stronger tailwind breeze.

Are they dropping to 1:1.2? I've probably misinterpreted what they are saying, but to my simple brain it looks like an increase in the level of assistance.

All batteries also offer 1100 charge cycles instead of the previously possible 500 cycles, even with a much higher service life.

This is good news. I wonder what the cost of these new batteries will. Let's hope that the price doesn't knock the edge of the benefits of the battery life improvement.
 
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Tim

Esteemed Pedelecer
Nov 1, 2006
770
78
London
Hold on --- it's 1:2 not 1:1.2!
 

flecc

Member
Oct 25, 2006
53,488
30,803
Tillson, Tim,

Yes, my mistake, it was the mention of 1.75 times on the high speed models when they are already at 2 times (which was an increase from 1.5) times which left me with the impression of a reduction.
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HarryB

Esteemed Pedelecer
Jan 22, 2007
1,317
3
London
No idea but we could start the bets at £695?
 
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flecc

Member
Oct 25, 2006
53,488
30,803
Dangerous to guess too high, it gives sellers ideas! :D

Say £495 for the 18 Ah one. ;)
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pete500

Guest
That'd work for me. Assuming (probably wrongly) that half as much capacity again would give me half as much distance again, the new battery would be massively easier to manage. Good work by Kalkhoff as I imagine they've got enough existing customers like me out there to make a fair wedge out of this.
 

HarryB

Esteemed Pedelecer
Jan 22, 2007
1,317
3
London
I agree, there is no way I would pay £700 for a battery however big but that doesn't mean the sellers won't have go at that pricing. Now what do Bionx charge for their 10Ah battery??
 

tillson

Esteemed Pedelecer
May 29, 2008
5,253
3,197
I agree, there is no way I would pay £700 for a battery however big but that doesn't mean the sellers won't have go at that pricing. Now what do Bionx charge for their 10Ah battery??
I can't really summon up any enthusiasm for this battery. I hope that I am wrong, but I suspect that they will kick the ar$e out of it when it comes to setting the price. Thereby, again, snuffing out the appeal of the ebike to a wider market.
 
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pete500

Guest
I can't really summon up any enthusiasm for this battery. I hope that I am wrong, but I suspect that they will kick the ar$e out of it when it comes to setting the price. Thereby, again, snuffing out the appeal of the ebike to a wider market.
People pay a lot more for a lot smaller increase in utility in other areas and I'm more than happy with ebikes' limited appeal - the streets are crowded enough with newbie cyclists as it is, can you imagine how many there would be if they discovered you didn't have to work yourself up into a sweaty, lycra/goretex-clad mess to get around?
 

carpetbagger

Esteemed Pedelecer
Nov 20, 2007
744
18
blackburn
£495 seems a nice number......sales of the bike would increase due to the greater range available....i wish