there wont be any electriity once it is flat!!
If the battery goes dead flat the door will still unlock manually with the key.
ITS A FLAT BATTERY USUALLY USED FOR WATCHES AND THE CODE ON IT IS 2032
hair goes wrong
A battery is made with chemicals that will react with each other in a particular way, and which, if you arrange things just right, will generate electricity in so doing. Thus, you do not put electricity into a battery, you put chemicals into a battery, and they make electricity.
If electricty leaves, you can use a UPS or a generator to keep electricity going.
it goes flat..
You have a bad cell in the battery and a bad cell will drain the other cells. get another battery
THE BATTERY WILL GO DEAD
The electricity comes from the battery that have been charged prior to usage, also if hit has a plug that goes in the wall, its taking electricity from the electricity you buy.
If a new battery goes flat the most common fault would be a fualty alternator or regulator on the alternator. The alternator is belt driven by your engine and generates electricity to re-charge your battery. A brand new battery may last a few days but without re-charge from the alternator it will eventually go flat.
It goes flat.
Because Electricity can't be "Stored" as such, it is constant. So wether the car is unused or even something as simple as a mobile phone battery, the voltage is still constant, so it looses power slowly (of course). Until it inevitably "Goes flat" as you put it. - but its often that if any battery is left to long without use or charged. The "effectivness" of the battery begins to deteriate, so eventually. (After a Fairly long time) that battery would become unusableb indeffinetly, regardless of the user , atempting to charge it. In addition if the battery runs flat is just a couple of days then something is on drawing power from the battery or the battery has a dead cell.