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Old 02-18-2008, 06:19 PM   #1 (permalink)
Lazarus
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Join Date: Nov 2007
Location: Central Texas
Posts: 1,476

Iron Horse - '97 Intrepid

C-3 - '08 XF50X
90 day: 135.32 mpg (US)
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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.


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