Yes, a battery with only a 25% charge will read 12 volts. A fully charged battery will read 12.6 volts.
Yes. A fully charge battery will read 12.6 volts with engine not running. A 75% charged battery will read 12.4 volts. At 50% charge, it will read 12.2 volts. At a 25% charge it will read 12 volts, but that will not be enough to even start the engine in most cases and unless the alternator is bad the battery is defective. With the engine running you should read 13.5 to 15.5 volts at the battery. Any less and the alternator is defective.
12 volts
12 volts!!! 12 volts!!! Real Answer 13.1 volts (Depending on Battery)
Two possibles. Either the battery needs to be replaced, or the stator is not charging. First check the battery with the engine off, should have 12. 2 volts or more, if under 12 volts, then charge and check again. If under 12 volts, then replace. If over 12 volts, run engine, check the battery volts, should have over 13 volts at idle, rev up, should get over 14 volts. If battery still shows only 12. 2 or so volts, then the stator in the engine has to be replaced.
The battery voltage on a PT Cruiser is typically 12 volts.
It is 12 volts.
12 volts DC
12 volts shut off. Running it should read around 13.5-16 volts at the battery posts. Any less and the alternator is bad.
12 volts
The voltage regulator regulates the output of the alternator or generator, depending on what you have. today it is mostly alternators that are regulated to 14.4 volts, but you are fine if it is putting out 13.25-14.9 volts lower than 12.5 volts will not charge a 12 volt battery and over 15 volts will boil or explode the battery. 6 volt systems will usually charge 6.5-7 volts. if the charging system is putting out that voltage, and the battery is still going down first check for bad connections, and charge the battery, if that still does not fix it have the battery checked, most parts stores offer some form of a test for a battery and can lead you closer to the problem if the battery is not the problem.
No, a 220 volts AC fan cannot run directly from a 12 volts battery. The fan requires a much higher voltage to operate efficiently. You would need a power inverter to convert the 12 volts from the battery to 220 volts AC to power the fan.
12 volts DC.