Could this be the way to go?

Gepida uk

Pedelecer
May 11, 2009
75
0
Very interesting? 3000 cycles, is it too good to be true?:rolleyes:
 

Morag

Pedelecer
Feb 28, 2010
225
0
Shropshire
I think those are what GoPed were talking about using in their new models in the not to far future. Not that that bit of into is of much use so I'll slink back into my corner :eek:
 

flecc

Member
Oct 25, 2006
52,804
30,376
3000 cycles is perfectly possible for a lithium-iron phosphate (LiFePO4) battery, if the discharge rate is held at a reasonable level well within the battery's capabilities.

The snag is that many of our e-bikes don't do that, and the territory can make it impossible.

For example, a low powered bike like the Powacycle Salisbury used in the fairly flat Eastern Counties could achieve that and even more easily, especially with a strong rider.

By contrast, a weaker rider on the powerful eZee Forza in a very hilly area would have no chance of achieving that and would have to test the validity of their warranty.
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Old Timer

Esteemed Pedelecer
Dec 5, 2009
1,279
12

onmebike

Esteemed Pedelecer
Jan 3, 2010
499
1
West Essex
How much are they then?

This is the quotation I received.

Reference: LiFeBATT Quotation 24th February 2010

To supply the following

Quantity 1

XPS1E – 3610CB

LiFeBATT Lithium Iron Phosphate 36V 10Ah Module c/w BMS System £575.00

Quantity 1 LB143360C-N 36V/8A Charger for LiFeBATT Module £125.00
 

eddieo

Banned
Jul 7, 2008
5,070
6
What bike uses these? I am sure I saw this type of battery on a bike recently....
 

flecc

Member
Oct 25, 2006
52,804
30,376
Far too expensive. With LiFePO4 that 10 Ah battery is inadequate for most 36 volt e-bikes, most need 15 or 20 Ah with this type to preserve the long life capability.

I've looked at the claims and have to say they are really little or no better than those for the Ping batteries which are much cheaper and include the charger. 1500 charges and 3000 in favourable circumstances are no different from Ping's.

The warranty has the usual "abuse" get out clause and no doubt the high discharge rates of many e-bikes would be ruled as abuse. Since some members have Ping's batteries running well at over 18 months now with no range loss, probably safer and cheaper to stick to the known product.
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Old Timer

Esteemed Pedelecer
Dec 5, 2009
1,279
12
This is the quotation I received.

Reference: LiFeBATT Quotation 24th February 2010

To supply the following

Quantity 1

XPS1E – 3610CB

LiFeBATT Lithium Iron Phosphate 36V 10Ah Module c/w BMS System £575.00

Quantity 1 LB143360C-N 36V/8A Charger for LiFeBATT Module £125.00
Bloddy hell, i could buy another e bike for that:D
 

flecc

Member
Oct 25, 2006
52,804
30,376
What bike uses these? I am sure I saw this type of battery on a bike recently....
Only private users. Sun issued some bike models using tiny versions of these batteries over a year ago but they soon disappeared from the market. eZee have just introduced an add-on version of this type for running in parallel with the existing battery.
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onmebike

Esteemed Pedelecer
Jan 3, 2010
499
1
West Essex
Far too expensive. With LiFePO4 that 10 Ah battery is inadequate for most 36 volt e-bikes, most need 15 or 20 Ah with this type to preserve the long life capability.

I've looked at the claims and have to say they are really little or no better than those for the Ping batteries which are much cheaper and include the charger. 1500 charges and 3000 in favourable circumstances are no different from Ping's.

The warranty has the usual "abuse" get out clause and no doubt the high discharge rates of many e-bikes would be ruled as abuse. Since some members have Ping's batteries running well at over 18 months now with no range loss, probably safer and cheaper to stick to the known product.
.


The only advantage I can see is that an indivual cell can be replaced if need be and that the supplier is in the UK.
 

flecc

Member
Oct 25, 2006
52,804
30,376
True. The high price probably results from the UK source though, an extra profit margin and import and business costs.
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flecc

Member
Oct 25, 2006
52,804
30,376
There is a nervousness in the industry with home re-celling or construction where lithium batteries are concerned. The accident potential is thought to be quite high, taking into consideration the needs for a BMS with careful cell management. It's rather different from re-celling NiMh.
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winterdog

Pedelecer
Feb 22, 2009
168
0
It makes me smile that the TTXGP looks like its just battery wheels and a washing machine motor :)