View Single Post
Old 02-18-2008, 06:19 PM   #1 (permalink)
Lazarus
ECO-Evolution
 
Lazarus's Avatar
 
Join Date: Nov 2007
Location: Central Texas
Posts: 1,482

Iron Horse (retired) - '97 Iron horse Intrepid

Ninja - '08 Kawasaki 250R
90 day: 76.23 mpg (US)
Thanks: 17
Thanked 44 Times in 33 Posts
e-bike power pack question

I have an e-bike with a 600w hub motor Kit. The power supply is 3- 12v/12ah batteries and 50 amp controller. I'm trying to extend the range and have a few questions. I'm not looking for more top end just longer range. I have a unlimited supply of SLA batteries so I need to stick with that.

I don't have the room for the next step up in batteries size to 12v/18ah or to have 2 sets of 3 12v/12ah batteries in parallel. I do have room to go with a 48v and just maybe a 60 volt pack. Right now I have a sweet spot of about 300w that seems to work well. So here where I need input.

If w=V*A then increasing the pack voltage should increase the range if I continue the commute at the same speed and not just blast at full throttle?

Will the motor only draw what it's maximum wattage is or can I burn the motor up if I increase the voltage? Same question for the controller.

Any input is appreciated.

__________________
"Judge a person by their questions rather than their answers."

  Reply With Quote