What happens when battery voltage is increased?
What happens when battery voltage is increased?
If resistance (I.e., the load) is constant, then the voltage and current will alway be proportional to each other. So if the voltage is increased, the current will also increase, rather than drop as the Question states. Think of it as water flowing through a garden hose.
What should the battery voltage be at cruising rpm?
If voltage is over 14.2 under maximum loads when at cruising RPM, buying a bigger alternator or a new alternator is a waste of time and money. Turn the motor off with no load (headlights, etc. all OFF) and read the battery voltage. With the engine just shut off, the battery voltage should be 13.2 volts to 13.8 volts.
Why does the Volt gauge fluctuate while the engine is running?
If you have voltage fluctuations while the engine is running it is an indicator of a problem with the charging circuit, or a major short. The battery condition is not related to the voltage guage unless it is really shot, and we can see this is not the case. Either you have something kicking in and causing a major draw, or a bad voltage regulator.
Why is the voltage reading on my alternator going up?
While watching the voltmeter display, start wiggling wires at the back of the alternator, the battery, and the remote voltage regulator (if there is one). If the voltage reading on the meter display goes up while wiggling one of the wires, you’ve found a bad electrical wire or connection.
What does a 5 Volt voltage drop mean?
But, before you condemn it, run a voltage drop test between the alternator and battery. GM typically runs a fusible link wire between them for overload protection and they can go bad, mimicking a bad alternator. A voltage drop of .25 volts or less is Ok and the alternator is bad. A voltage drop of .5 volts or more means the wire is bad.
If you have voltage fluctuations while the engine is running it is an indicator of a problem with the charging circuit, or a major short. The battery condition is not related to the voltage guage unless it is really shot, and we can see this is not the case. Either you have something kicking in and causing a major draw, or a bad voltage regulator.
What is the relationship between voltage and rpm?
For most motors, the voltage to RPM relationship is fairly linear until approaching the maximum RPM. Model railroading takes advantage of this relationship by very simply controlling the speed of our trains through varying DC voltage.
But, before you condemn it, run a voltage drop test between the alternator and battery. GM typically runs a fusible link wire between them for overload protection and they can go bad, mimicking a bad alternator. A voltage drop of .25 volts or less is Ok and the alternator is bad. A voltage drop of .5 volts or more means the wire is bad.
What should the voltage be on a GM alternator?
GM typically runs a fusible link wire between them for overload protection and they can go bad, mimicking a bad alternator. A voltage drop of .25 volts or less is Ok and the alternator is bad. A voltage drop of .5 volts or more means the wire is bad.
