Watts.....Volts, Amps

[BigAndy09]

Hi Folks

Could someone point me in the right direction to an explanation of what affect diffrent Volts, Watts and amps have on performance of an electric vehicle, particuarly an ebike if possible.

I see all sorts of combinations advertised but have no idea what it means other than the basic assumption that the higher the numbers the better, perhaps.

Also batteries, which kind have what advantage?

Thanks in advance

Andy

 

[BigAndy09]

Sorry to answer my own question but may be usefull to some:

Electric Bicycle Questions Answered

 

[Barnowl]

Thanks Andy. That stuff always confuses me. Good easy to understand article. Bit dated though in terms of costs

PS. The low powered batteries have the advantage that they invite you to contribute more KW yourself. Not necessarily a bad thing if you're up for it.

 

[dan]

ohm's law

check out ohm's law should answer your question, basics of all electric motors

http://en.wikipedia.org/wiki/Ohm's_law

 

[joab]

wh/km

On average you need between 5wh/km - 10wh/km. If you see battery rated 36v/10ah it means it has 36*10=360wh. That would get you 36km at 10wh/km and 72km at 5wh/km. On my ride I use around 6wh/km but its completly flat, speed limit 25km/u, amp limit of 8a and I'm very fit.
Regards,

Jo