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Why does a battery charger produces a higher voltage than the battery being charged?
Wiki User
∙ 11y ago
Battery chargers generally operate at the same voltage as the voltage as the battery they are charging. They usually vary the amperage they feed into the battery to recharge it. A trickle charger usually only feeds a few amps into a battery to recharge it slowly over time. A fast charger feeds more amps for less time to bring the battery to full charge faster.
Automotive alternators are the only charging systems that I am familiar with that generate more voltage than the battery they are charging. That's because they have to run the car AND recharge the battery at the same time. Car alternators can vary their amperage and voltage outputs to allow for the varying demands of the car and all of it's electrical devices and recharge the battery as needed.
Wiki User
∙ 11y ago
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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.
What type of charger do you need to charge 6 volt 2 mph kids motorcycle battery?
You need a 6 volt charger. When you buy a charger look for one that monitors the voltage level of the battery while it is charging and when the battery is fully charged it will turn off. Indiscriminate charging of a small battery can easily destroy it. Being left on the charger too long can boil the electrolyte out of the battery. A battery can not recover from this action and it will need to be replaced.
Can a 0.9V 400MA solar panel be used to charge 2 AA batteries?
To charge a battery, the charger voltage must be higher than the battery voltage. If a AA battery (or any other) has a normal voltage of 1.2V the charger voltage must be at least 1.2V. The type of voltage supply and its current capability is immaterial. No, the charging voltage have to be larger than the battery voltage, to charge 2 AA batteries, that is 3 volt if connected in series, so a voltage of at least 4 volt is needed
Can a 3.7 volt battery charger be used to charge a 6 volt battery?
Short answer, no. Not so short answer, it depends on the battery's chemistry. In all cases, you're not going to charge it completely no matter the chemistry, but you might charge it anywhere from nothing to ~75% depending on the chemistry and the 6 volt charger's top voltage(It's not 6 volts! If it's a lead charger, you might expect a top voltage of ~6.8 volts). Also, you want to make sure the charger's amperage doesn't exceed the battery's charging current's ability or you might overheat the battery and destroy it. In a longer answer, it is possible to convert a 6 - 7 volt supply to 8-9 volts with a "boost up" converter but that's either going to require buying the device or making it yourself. Even if you we're to do that, you need to make sure the battery's chemistry's safe limits aren't exceeded. NiMH, for example, has a quick downtown in its voltage near the end of its charging, and if the charging isn't cut-off there, the battery will keep absorbing charge until it overheats and explodes. another comment: yes if it fits into the device normally though it would take a little longer to charge
What is the output voltage from Milwaukee charger?
Milwaukee manufactured many battery operated types of equipment. Without knowing what type of equipment you refer to, an answer can not be given. Try looking on the nameplate of the charger. It should state an output voltage in DC volts.
How many hours does a lawn mower battery have to be on a float charger?
A battery float charger is intended only to keep a fully charged battery from losing its charge. It will NOT work to charge a battery that is discharged or damaged. Check the voltage of the battery to be charged. Do not use charger if the battery voltage is less than 9.6 volts.
Can you charge a 12volt battery with a 6volt charger?
NO, a 12 volt battery cannot be charged with a 6 volt charger. To charge any battery, the charging voltage has to be, at least, slightly higher than higher than the voltage of the battery. Current flowing through the battery is what accomplishes the charging, and no current will flow at or below the voltage of the battery to be charged.
Can you use a 120v dewalt battery charger in Europe with 220v without a voltage converter without damage to the charger or battery?
No, by doubling the input voltage to the charger which is just a transformer you will be doubling the output of the charger. Batteries like to be charged at about a volt and a half above their working voltage.
When you connect the battery charger to the batterythe charger first sees voltage from the battery. How then is charged reversed to enter the battery?
well, most battery chargers can discern the anode and the cathode, when first charge the battery, the convertor of the charger transform the alternating current (AC) into Direct current(DC), that means the charger "sees" the voltage of the battery, in fact, most charger can transform the AC to one/some fixed DC Voltages. and if you reverse to enter the battery, it doesn't matter, the battery can be normally charged, this case was considered when designing the charger, don' t be worry.
Can you charge a 18v battery with a 12v charger?
NO, voltage of the charger must match the battery voltage.
A battery produces voltage using?
battery produces voltage by
How many volts does a 7.2 volt charger put out?
Without knowing the maximum output current it was designed to produce it isn't possible to say exactly how much voltage a charger produces. Also, was it intended to give a slow or a fast charge? In general all that can be said is that the output voltage of a battery charger must always be slightly higher than the nominal voltage of the battery it was designed to charge. This is for the simple reason that it won't be able to put any charge into the battery unless the charger's "on-load" voltage is higher than the battery's voltage. For the same reason, a charger which can deliver a high output current (amps) will need a higher "on-load" output voltage than a charger which can only deliver a low current. Also, when it is switched on but is not connected to a battery, the output voltage of any charger will always be higher than when it is doing its job of charging a battery. That voltage is called the "no-load" voltage. Assuming the battery being charged is a standard low-voltage type, of less than, say, 24 volts DC, it is quite safe, using a standard electrician's voltmeter, to measure the load and no-load voltages of the charger as described above.
Can you overcharge a car battery?
You bet you can. That is why it is always advisable to use an automatic charger that shuts off when the battery is fully charged. If you do not have one then charge it for a couple of hours and then remove the charger and check the voltage at the battery. A fully charged battery will read 12.6 volts. 12.4 at 75% charge, 12.2 at 50% charge, and 12 Volts at 25%. If it is not fully charged then put the charger back on a little longer.
What is the difference between 2amp 4amp 6amp battery chargers?
The difference between a 2amp, a 4amp and a 6amp battery charger is the speed at which the battery will be charged. The numbers represent the maximum amperage output at a specific voltage at which the battery will be charged.
Can you charge an 8 volt battery with 6 volt charger?
No, you cannot charge an 8 volt battery with a 6 volt charger. The voltage of the charger must match the voltage of the battery.
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 you charge an 8 volt battery with a 6 volt charger?
Some have a switch for 6 or 12V - if not you will "cook" a 6 volt battery using a 12 Volt charger
