I have been thinking how difficult it is to form a conclusion as to which
type/size (Ah/Voltage) of battery would best suit one's purpose not only for would be e-bikers but also for those who wondered why they chose the type of battery they did when they bought their e-bike (particularly if there was a choice).
Of course the information imparted by such a survey would be subjective and determined by the type of use that the owner had put their bike to and that could be compared with(to) the manufacturer's information (where it is transparent).
The categories of character I had in mind (but the list is not exhaustive) are:
Number of Type of Batteries in use (subscribers to this forum)
Type of battery: Lead Acid/NiMH/Lithium (of which there are some sub-types)
Safety factors. (spontaneous combustion, etc)
For each capacity/type: Range according to type of terrain (Hilly/Average/Flat - perhaps defined.
For each capacity/type: Effect on Speed - on the flat/up hill (various grades).
Number of recharge cycles expected.
Useful Life of chemical content depending upon use (heavy, moderate/light - as defined for this purpose) showing decline in Range/speed with time/use.
Failure rate as experienced where it fell short of expectation from published specifications.
The economics of low Ah batteries (eg 7Ah), compared with higher Ah batteries (eg 13Ah or more if available)
Price factor(according to manufacturers/suppliers)
Availabilty of replacement batteries.
Recelling feasibility
Weight
Charge Time
Memory effect (Yes/No)
Relative Efficiency (Amps/Kg)
As I have said, the opinions given in the survey will be subjective, but across the spectrum of users, and compared with manufacturers' published characteristics, the results would be useful.
This is a lot of work especially for those with specialized knowledge of the subject. But there has been a lot of publication of e-bikers perceptions of how their bikes and their BATTERIES have performed which could usefully be drawn together in one location.
It goes without saying that everyone should feel free to post his opinion of what this survey should cover.
Peter
type/size (Ah/Voltage) of battery would best suit one's purpose not only for would be e-bikers but also for those who wondered why they chose the type of battery they did when they bought their e-bike (particularly if there was a choice).
Of course the information imparted by such a survey would be subjective and determined by the type of use that the owner had put their bike to and that could be compared with(to) the manufacturer's information (where it is transparent).
The categories of character I had in mind (but the list is not exhaustive) are:
Number of Type of Batteries in use (subscribers to this forum)
Type of battery: Lead Acid/NiMH/Lithium (of which there are some sub-types)
Safety factors. (spontaneous combustion, etc)
For each capacity/type: Range according to type of terrain (Hilly/Average/Flat - perhaps defined.
For each capacity/type: Effect on Speed - on the flat/up hill (various grades).
Number of recharge cycles expected.
Useful Life of chemical content depending upon use (heavy, moderate/light - as defined for this purpose) showing decline in Range/speed with time/use.
Failure rate as experienced where it fell short of expectation from published specifications.
The economics of low Ah batteries (eg 7Ah), compared with higher Ah batteries (eg 13Ah or more if available)
Price factor(according to manufacturers/suppliers)
Availabilty of replacement batteries.
Recelling feasibility
Weight
Charge Time
Memory effect (Yes/No)
Relative Efficiency (Amps/Kg)
As I have said, the opinions given in the survey will be subjective, but across the spectrum of users, and compared with manufacturers' published characteristics, the results would be useful.
This is a lot of work especially for those with specialized knowledge of the subject. But there has been a lot of publication of e-bikers perceptions of how their bikes and their BATTERIES have performed which could usefully be drawn together in one location.
It goes without saying that everyone should feel free to post his opinion of what this survey should cover.
Peter
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