Yes, the battery may be defective is you cannot jump start the car. The battery may also be so low as to need to be charged some before you attempt to start the car. Put a charger on the battery and see if it will accept a charge.
Sometimes yes and sometimes no, depending on what is wrong with the battery.
Jump start it from another vehicle or charge the battery. If the battery is bad, replace it. If you jump start it and the battery is dead you will have to wait about 15 minutes with the jump car running and connected to the dead battery, in order to build the battery up enough for it to actually take a jump.
If the starter is bad no. Check battery, starter and solenoid to be sure which is bad.
you can but it wont stay running if the battery is dead
If it jump starts, the problem is probably either the battery or a corroded battery connection terminal.
bad battery or loose battery cable
clean the battery terminals with baking soda and water. them jump it
If it turns over very slowly, check for bad battery and ground connections. It should turn over quickly if you jump start it. If it doesn't, the battery connections are bad and/ or the battery is bad.
dead battery, jump start and maybe buy new battery, you could allso have a bad alternater
bad alternator, dead battery.
The symptoms of a bad lawn mower battery include difficulty starting the mower, slow cranking when trying to start the engine, and the need to jump-start the mower frequently.
Try getting a jump start. Could be a bad battery. If your battery is good, then you will need to get a new starter. It may be the Starter or the battery make be dead,