The best way is take it to any auto parts store or repair shop, and they can do a charge test on it and see if it is working properly.
Bad starter or fualty battery connections. Check all grounds and/or bring the starter to autozone to have it checked
bad battery
YOU EITHER HAVE A WEAK BATTERY OR THE ALTERNATER IS GOING BAD. ADVANCED AUTO PARTS WILL CHECK IT FOR FREE.
bad connection from the battery or alternator
in what
when it doesn't work
bad ignition, bad battery, bad starter, need more info in the question
The camera will not turn on.
When your battery does not get charge.
time for a new battery or just the cable is going bad
You need to check the charging system with a volt meter. It should have 13.9 to 14.2 volts at the battery with engine running.
Seized engine? Dead or weak battery? Loose or corroded battery cables? Bad starter solenoid? Bad starter? Bad ignition switch? Bad neutral safety switch?