Mobility scooter

[Sadlercomfort]

Yeah 3.2Ω looks about right, if you have a 24V motor Ohms law gives you 7.5A current.

However, while the scooter is under load the motor will pull considerably more current.

I'm not sure how to gauge this, but from my own experience it could be 3 or 4 times this amount.


So if someone suggested 30A continuous they're probably right.. so a 120A max controller as Gryd suggested should work comfortably. But, see what others think first.

 

[Si&Oll]

Thank you
Do you think the 100amp controller will work?

 

[Sadlercomfort]

I'd recommend waiting for a second opinion first, too see how others gauge your continuous current from the static resistance.

I've just made an educated guess.

 

[Si&Oll]

Ok, thanks

 

[BobK]

3.2Ω.

That would indicate a stall current of 7.5A at 24V. That seems way too low to me. If it is correct, a 10A controller would be fine.

Bob

 

[BobK]

Measuring the static resistance gives you the stall current, which is always higher than the running current. That is why I think it is too low (the resistance is too high).

Can you use your multimeter to measure the unloaded running current from 24V supply?

Bob

 

[Si&Oll]

I may be able to check this in the morning, we are going on holiday for 2 weeks at 10:30am
I will try, if not I will do it on my return and let you know.
Thank you to all for your help