I have a Scotts Lawn mower that won't run once its removed from jumper cables?
I have a Scotts lawn mower that when I jump it off it runs but when I remove jumper cables it dies
In small engines, the battery acts as a voltage regulator. When the motor requires little electricity, it stores the surplus being produced, when the motor needs more electricity than the engine can produce, it supplies the difference. Sorta like a savings account, put your excess money in the account and draw it out when you are needing cash.
When the battery is bad, it can't act like a voltage regulator. It consumes all the electricity and doesn't give anything back. If there is a short inside the battery, or the cables are corroded, it is the same as cutting a wire and breaking the circuit.
So as long as the jumper battery is connected to the engine, it runs. Disconnect the jumper and the circuit is broken because the old battery has shorted or the connections are corroded.
