Replacement Battery Prices

[jhruk]

Regarding SLA value, it's important to realise the effect of Peukert's law. In high discharge usage as in our e-bikes, SLA batteries will only give up around half their content or a little more. This means a 12 Ah battery will only have effectively about 6 or 7 Ah in most e-bike usage, and never anywhere near the nominal 12 Ah.

Obviously this drastically changes the £/100Wh figure in the chart. For example, the ebay Ritar 12 Ah SLAs shown as £15.74 per 100Wh is in reality more like £28 to £31 per 100Wh for comparison with most bike specific lithium batteries.

Ah, Peukert's law…. I’ve changed it to 7ah. I haven’t done the calculation but I do have a set of those Ritars and, from experience, would say that’s quite a conservative figure for a new set. They are kept for occasional use, for when I can persuade someone to come on a ride with me. I always take the Ritars myself - not wishing to put them off ebiking for good!

There’s more I would like to say about ‘the occasional user’ but I’ll leave that for another thread. I won’t be making any further changes to the list after today.

 

[jhruk]

Well done JHRUK,

Although you have listed eZee batteries as sold by OnBike, Cylezee sell FP (flat pack type) eZee batteries as used with conversion kits and prices can be on our website here Shop - Cyclezee Ltd
VP (vertical pack type) as fitted to eZee bikes will be also be available from January.

Regards,

Thank you Cyclezee. Sorry for leaving you off - you were not forgotten. It was only done on the spur of the moment, without too much thought, and I wasn’t sure which prices to use, sale or normal. I didn't really intend it as a buying guide - just for rough comparisons.

 

[Cyclezee]

No worries JHRUK,

For the time being probably better to quote our normal prices as far as Cyclezee is concerned.

I think what you are doing is a great idea and probably something that should be a permanent fixture on the Forum. It is a useful aid to people to be able to quickly see the cost of replacement batteries when deciding to buy a bike or conversion kit. Of course it would need updating from time to time to keep pace with price changes and new entrants. Hopefully Russ will want to incorporate your table somewhere on the site.

Regards,

 

[flecc]

Ah, Peukert's law…. I’ve changed it to 7ah. I haven’t done the calculation but I do have a set of those Ritars and, from experience, would say that’s quite a conservative figure for a new set.

I agree it could be different for a new set and is very bike and rider dependent. I tend to make my judgment on the most common use of these by Powabyke and the "pedalling refusenik" type owner. A good cyclist using them on many other e-bikes could realise a much higher capacity, but I think it safer to quote the worst case and let some be pleasantly surprised, rather than disappoint with too much optimism.

 

[bersh]

I have a 36v 10ah lithium ion battery made by psylium (sic). Currie Technologies in Southern California has stated unequivocally that the replacement cost is $700. What is really bad is that apparently psylium no longer makes this, has subcontracted it to some other producer, but there is still not enough information available to Currie for them to order a replacement-their estimate is at least 2 months and maybe twice that. This battery is for my IZip Via Mezza Enlightened (a bike no longer made)...

 

[Deleted member 4366]

Show us a picture and maybe someone can recommend something. Here's an example of how to adapt. Tthe original battery box is empty and makes nice storage for tools, waterproofs, etc, and has been replaced by a $209 Lifepo4.
36V battery pack

 

[morphix]

Yay the famed Cyclamatic! The ultimate budget bike that spawned its one-time exclusive members fan club on here

Is re-kitting those cases not practical then due to lack of availability of suitability fitting battery? Surely it's only a matter of time before we start seeing cloned batteries coming from the East for specific bikes like this where the market is large enough? Or creative businesses in UK recycling the old batteries and re-fitting cells.