1. The problem statement, all variables and given/known data I am planning to use a Li-ion battery running my 4 small pmdc motors rated at 24V and 0.5amps. Is 24V 10Ah battery enough to provide sufficient power to run my application? There is a current controller which is rated at 3amps and voltage upto 44V. I want to restrict the current within the limits of controller which is providing an interface with four motors. What is the exact way to draw a required amount of current from a battery rated at 10Ah? 2. Relevant equations 3. The attempt at a solution I tried two small power tool batteries rated at 18V nearly 1.5Ah, it run my application at first for one or two second, but later on it discharged.