7.4 volts.
either it does not charge the battery enough or it will charge it too much which will quickly cause the electrolyte in the battery to evaporate
yes it just takes longer to charge, but check how much Amps (A) your charger gives out and how much Amps your battery can take if the battery has lower Amperage (A), don't do it, otherwise you're fine. <<>> No, the charging unit has to have a higher output that the battery voltage that it is charging. For example, on a 12 volt car battery the charging rate is 13.5 volts.
A: that is no standard or establish output from each charger. However the charger must provide the maximum current necessary to charge the battery and the voltage must always be more then the battery when has reached full charge
Since the voltage is the same, I would expect that not much charge would be transferred. Normally, for a 24 V battery, you would need a HIGHER voltage to charge it.
Hi, To properly charge a battery, you should apply a voltage that causes current to flow (being careful to get the plus and minus hooked up properly!) at about 1/10th the amp/hour rating of the battery. For a 7.2 amp/hour battery you should not charge much faster than 0.72 amps. This is the best practice to prolong the life of your battery. Chris
The alternator does not hold a charge. It charges the battery. If it will not charge the battery then either the alternator is defective, battery is defective, or the connections are corroded or loose. You should read 13.5 to 15.5 volts at the battery with the engine idling. Check it with a DC volt meter. If you get less the alternator is defective. If you get much more the voltage regulator is defective.
100% charge = 12.6 volts 75% charge = 12.4 volts 50% charge = 12.2 volts 25% charge = 12.0 volts
This is entirely dependent on the battery. You must consult the battery's documentation to find the right answer.
To calculate the energy stored in a battery with volts and coulombs, you can use the formula: Energy (Joules) = Voltage (Volts) x Charge (Coulombs). Multiply the voltage by the charge of the battery to get the energy capacity in Joules.
the alternator voltage at the battery should be between 12.4voltsv-13.6 volts
The battery might be bad, or your alternator might also be bad. Use a battery load tester or digital voltmeter to see if your alternator is charging the battery? The voltage should be no more than 13.8 volts while the vehicle is running. If it's higher, your voltage regulator is bad, and if it's not much more than the regular voltage of the 12 volt battery itself, the alternator is not doing it's job, and needs to be replaced. Good luck.
From the alternator to the battery should be 14v