Assuming both battery cables are fastened securely at both ends, look for a burnt-out fusible link.
No power? Do you also have No headlights? No horn? No radio? If so, check: 1. Clean the inside of the battery terminals 2. Check for blown fuses, fusible links, and relays Did you charge the battery after you bought it? New batteries are not fully charged when you buy them new.
what would be the reason, i just put a new battery in car, but does not register power to headlights nor fuel pump
Not connecting it
To store electrical energy.
there would either be a short to power in your switch / a short to power in your wiring somewhere between the battery and the bulb . somewhere in there electricity is constant and completely cuts out the selector switch. the lights turn off when you disconnect the battery because that is the only time that power is not applied to the bulbs.
Battery, alternator would run your electrical. Fuel runs the engine
Yes
Battery drain would depend on what else is on, for example headlights, courtesy lights, glove box light etcetra. If there is nothing electrical on then there should be no drain.
Ok, in what way are you getting no power to the starter? Do you have power to the headlights? Do they dim a bunch when you try to start the vehicle? Is the starter clicking but not starting? Will the vehicle start if you jump start it? All electrical problems of this nature should start with a load test on the battery, even if it seems fairly new. If it tests good, the next thing I would check is to see if the headlights dim when you try to start it. If they dim I would check the cable connections to the battery, then have the starter tested. If they don't dim you could either have a problem with the ignition switch side of things or the starter solenoid.
Weak alternator. Have the charging system checked. I had a 95 Toyota tercel that totally shut down when the headlights turned on and the cause was for the most part dirty battery connections, when the electrical load was raised the alternator could not immediately keep up and required a moment to adjust, but with a bad battery connection (probably the Positive in my case) it couldn't temporarily draw enough power from the battery to still fire the spark plugs hence the immediate stall.
Yes, they most certainly do. Without a battery that would be nothing to store the electrical energy. Without the electrical energy you would not even be able to start the engine let alone drive the car. The battery supplies electrical power to all electric components within the vehicle. Without a battery the car is just a hunk of metal that is going nowhere.
I would suspect either a loose connection or a corroded battery terminal.