means your battery is useless and you need to buy a new one, at least that's what my Nikon manual said!
In much of the world, flat is the word of choice for a battery which is nearly used up. A more correct term would be 'exhausted'. Weak, used up, run-down are all acceptable terms. 'Dead' can be vague when referring to a battery. It can mean a battery that will not accept a charge, or will not retain a charge, or a battery that is completely exhausted but would still be functional if charged.
The term "dead battery" means a battery that has exhausted its charge.
Yes - you can run a 1200 watt motor on a car battery - until the energy of the battery is exhausted.
Use a multimeter to measure the voltage.
I am exhausted..
That depends upon what the starter problem is. If the battery is exhausted, you can use another vehicle's battery, with jumper cables.
It means exhausted.
The most probable cause is the battery is exhausted.
tired or pooped
It means you are tired.
Emotional exhaustion or Loss of hope.
As long as your car engine is running, it should be OK. An exhausted battery will only become a problem when you try to start the car.