It would need to be four times higher then the resistance that it is applied against. If the circuit is a 1 ohm resistor, then the voltage would need to be 4 Volts to make 4 amps.
alternator probably needs replacing not charging battery or bat is dead and not taking charge
Some can be, and some are run by electricity. They all run on electricity. But some run on DC battery voltage and some run on AC household voltage. Some can even run on DC or AC voltage. All automobile radios run on DC battery voltage.
No, the battery is DC voltage and your home runs on AC.
It uses voltage from the alternator which in-turns comes from the battery.......
Check the voltage regulator mounted to the fender
Yes 2001 and later have electric fuel pumps. They need battery voltage to work.
A run down or nearing end of life battery. Dirty and/or loose battery connections.
Yes, most leds will run on a 6v battery. Just look at the required voltage and make sure you don't exceed the maximum voltage. If the voltage is to high, find the correct resistor.
Using a 6 volt battery in a clock designed for a 1.5 volt battery can damage the clock's internal components and lead to overheating. The higher voltage may cause the clock to run faster than normal, affecting its accuracy. It is recommended to use the specified voltage battery for optimal performance and longevity.
The voltage reg is sticking and will run down the battery.
You can't make a DC voltage multiplier at all. You'd have to use the battery to power some sort of active power supply which, internally, would either oscillate or switch to create changing voltage, then step the voltage up through a transformer, then rectify and filter the higher-voltage AC, and hand you the higher DC at its output. You would use a significant and probably unacceptable percentage of the battery energy just to run the power supply. In other words, the battery would run the motor for an unreasonably short time before you would need to replace or recharge the battery. Look at the power requirement alone! If the 180V motor needs only 1 Amp to run, then the motor is gorging on 180 watts of power. To deliver only that much power at 12 volts, you would need to draw 15 Amperes from the battery, and that doesn't even yet account for power lost in the intermediate power supply.
I would suspect that your alternator and ac run off the same belt (serpentine belt). When you run the ac, it causes the belt to run a little slower, and therefore causes the alternator to not put out as much voltage as it needs to in order to keep the battery charged. However, if this is the case, it is because the alternator is going bad. The ac shouldn't affect the engine speed to the point where the alternator doesn't function-- if this were the case then the engine would die. It must be that the alternator needs to be kept at fairy high rpms to produce necessary voltage. Get it tested and if it's bad, replace it or have it rebuilt at a shop.