Ebikes.ca Infineon Controller 25A vs 35A

[bringageek]

If I were using, say, a 36V 20AH LiFePO4 Ping Battery and the Nine Continent 2805 hub, what sort of difference in performance or functionality would there be if I were to use the 35A controller rather than the 25A controller?

 

[swbluto]

higher amp = higher acceleration and higher top speeds when going uphill. Otherwise on the flats, top speed remains unaffected.

 

[wesnewell]

1260W max power compared to 900W max power, which includes faster acceleration, and more climbing ability. Faster loaded speeds.

 

[bowlofsalad]

You can always buy the 35a controller and, if you decide you don't like or want that much power, you can program the controller with a lower limit. Or, if you get something like the cycleanalyst or speedict, you can set limit on amperage through via either of those.

 

[dogman dan]

The main difference would be murdering your ping with the 35 amps controller. Stick to the 25 amps.

Think of battery specifications as like the red line of a car tachometer. Anybody thinking that red line means you can drive so the engine is always 50 rpm less than the red line and the engine will last? Hell no, you drive half way to the red line, or less.

More amps generally doesn't mean more speed, but it does mean faster take offs.

 

[bringageek]

I'll keep that in mind bowlofsalad, thanks!

Dogman, bud, is there a battery in the 36V variety that has the cojones to play in the 35A league that you would recommend? And one in the 48V category?


Thanks peeps!

 

[dogman dan]

Sure, A123 battery from EM3 ev for the win. But also with better real world c rates than ping is any headway pack. So 15- 20 ah of headway will do. Or if you can carry it, add 10 ah more to your ping. 30 ah will do it for sure.

I'm also told that you can special order a pack from ping with 4c cells in it. That, which comes with the high amps bms, should run a 35 amps controller when you buy a 20 amps size.

Then there is RC lipo, where the crappy stuff is 20c, and it just goes up from there. Currently, since I couldn't afford a 48v 20 ah cellman A123 pack, I am running a 10 ah 48v lipo pack on everything. My old 48v 15 ah ping died, and my new big 5304 motor and controller on the longtail cargo bike are 40 amps.