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I'm not 100% sure, I came on this post seeking an answer to the same question... But, I do have a general idea of how it works. Basically AC current flows from the wall socket through a cord until it gets to the weird box that is in all computer chargers. This box I assume to be a rectifier. This rectifies, or converts AC to DC thus allowing the current to flow the rest of the length of the cord and charge your battery. Trivial fact: A mac book charger has a single wire coming from rectifier to computer. How is this possible? Doesn't DC operate on two poles? Correct, it does. The charger has an inner wire and an outer wire which are insulated from each other. Hope I helped some.
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∙ 12y ago
Wiki User
∙ 14y agoA 9 volt battery charger is designed to charge 9 volt batteries.
The answer to the Related Question explains how any battery charger works.
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Can you use a 9.6 volt DC drill battery to extend the life of a standard 9 volt DC electronic item?
no, a 9 volt battery is small (goes in a smoke detector) a 9.6 volt battery is much larger, and it is not a DC battery (direct current) but NiCd (nickel cadmium.) two totally different things.
Can you use 9 volt charger for 4.5 volt appliance?
Not w/o great care and consideration. It would probably burn up. :(
What happens to the current in a circuit if a 1.5 volt battery is removed and is replaced by a 9 volt battery?
Current will go up by a factor of 6 times in that scenario.
Does a 500mah battery charger charge a 4300mah 8.4 large battery?
Normally speaking, the output of a charger is stated in milliamps mA (ie 500mA) and the term mAh refers to the number of milliamps flowing for 1 hour. So for example, a 1000mAh battery will need to be charged at 500mA for 2 hours to reach full charge. In your case, I must assume that yours is a 500mA output charger and is suitable for charging an 8.4 volt battery. Theoretically at this current output, your charger will take about 9 hours to charge a 4300mAH battery. In practice the process is not 100% efficient so a 10 hour charge will probably be required.
Will a 9 volt 800 milliamp adapter work with a 9 volt 400 milliamp device?
Yes it can!
Can you use a 3 volt charger for a 9 volt battery?
No
Can a 9 volt charger be used to charge a 7.2 volt battery?
no
How do you reboot a rechargeable 9 Volt battery?
buy a battery charger
Can you charge a 6v battery with a 9v charger?
no, if you charge 9 volt battery with 12 volt battery you will destroy 9 volt battery
Can you use a 6 volt charger for a 9 volt battery?
No, the battery will be overcharged and battery damage will occur if it is done.
Can you use a 9 volt charger for a 6 volt battery?
This is not advised! The 9-volt charger might have a current limiter so that nothing burns up, but it any case if left on it will destroy the 6 volt battery by overcharging. A 6-volt charger is not expensive.
Can a 9 volt battery charger be used to charge a 7.2 V battery pack?
NO.
Can a 9 volt battery charger be used to charge a 4 volt battery pack?
Sort of, but any automatic cut-off won't work. You run a real risk of overcharging the battery and damage it.
Can a 7.5 volt charger be used on a 9 volt appliance the appliance is a weighing machine?
No. The voltage of the charger's output is only 7.5 volts. This is not high enough to charge a 9 volt battery device.
Can you charge a 9 volt battery with a 12 volt charger?
no, there is a high probability that it will explode
Can you charge a 9 volt car battery with a 6 volt charger?
Unfortunately No. Voltage potential is such that electric current will flow from a higher potential towards a lower potential in much the same way that water will flow from a high level to a lower level until it reaches equilibrium (balances out on both sides).If the battery is completely discharged then a 9 Volt charger may bring the battery up to around 9 Volts but it will never go above equilibrium.Connecting a fully charged 12 Volt battery to a 9 Volt charger will cause current to attempt to flow "backwards" into the charger. If the charger has (as many modern ones do) overload and other protection devices then the charger will simply shut down but if the charger has no such protection, it could cause permanent damage to the charger and, depending on the rate that the battery discharges, the battery could explode and one or both devices could in fact set on fire.Electricity can be potentially very dangerous and you should always ensure that you are using the correct equipment designed for the job. If in doubt, always seek professional advice.Read more: Can_I_charge_a_12_volt_battery_with_a_9_volt_charger
Can I charge a 12 volt battery with a 9 volt charger?
Unfortunately No. Voltage potential is such that electric current will flow from a higher potential towards a lower potential in much the same way that water will flow from a high level to a lower level until it reaches equilibrium (balances out on both sides). If the battery is completely discharged then a 9 Volt charger may bring the battery up to around 9 Volts but it will never go above equilibrium. Connecting a fully charged 12 Volt battery to a 9 Volt charger will cause current to attempt to flow "backwards" into the charger. If the charger has (as many modern ones do) overload and other protection devices then the charger will simply shut down but if the charger has no such protection, it could cause permanent damage to the charger and, depending on the rate that the battery discharges, the battery could explode and one or both devices could in fact set on fire. Electricity can be potentially very dangerous and you should always ensure that you are using the correct equipment designed for the job. If in doubt, always seek professional advice.
