Let's Make Robots!

motor amperage

I am starting my first project. i have aquired to old wheel chairs that i am going to use the motors off of. only issue is i do not know the amperage of the motors. i would like to select the right batteries for the job. i know the system runs off 24v. but thats all i know. how can i find out. i know the models aof both chairs and tried searching it but no luck. one is a invacare action p7e and the other is a jazzy 1122. if anyone knows what they are or how i can find out that would be awesome.