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โˆ™ 2010-02-08 22:32:35
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Q: Can you charge a 12 V 9 amp battery with a 12 V 6 amp charger?
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Can I use a 12v 20Ah Charger to charge a 12V 7Ah battery?

yes 12 volt battery chargers are suitable for all automotive and marine 12 volt battery's never use the quick boost function on some chargers to charge a battery it is best to charge at a low setting over night should do ah is the amp hour rating of a battery the higher the rating the longer it can turn the starter for without going flat a battery charger to the best of my knowledge shouldn't have an amp hour rating so i don't know where you got this rating from


Can i use a 12 volt 2 amp charger to charge a new motorcycle battery?

yes if its a 12 volt battery.Don't leave on too long.about 6 hours would be good.connect leads then plug in.


Can you use a 12 volt charger to charge a 18 volt battery?

Depends on the cell type but probably not.


Can your charge a 12V battery with a 6V charger?

No. A 12 v battery will actually have a charged peak voltage of 13.54v or 13.58v. A six volt charger will have around a max 7.5v voltage. The 6v charger will think the battery has peaked and will discontinue charging.


Can a 3.7 volt battery charger be used to charge a 6 volt battery?

No you can't, the battery and the charger might burn due to mismatched voltage. You will need a charger of the correct voltage and current capacity. The correct connector is also necessary. I agree, but a 6vdc battery requires about 7.2 vdc to charge it to capacity. as for current, the more amperage the greater will be its ability to charge the battery, while low amperage make it a trnkle charger which can maintain a full charge but it takes a long time to charge a discharged battery. As for connecting to the battery, simple alligator clips connected to the battery terminals is all that is necessary. Just make sure the Plus teminal goes to the positive terminal and the same for the negative terminals. As for mismatched voltage the only danger is if the charger produces 12 volts and the battery is only 6 volts, but if the battery is 12 v and the charger is producing only 6 volts the battery will not charge as the difference between a discharged battery and a fully charged one is only one volt less.

Related questions

How long does a0.6 amp charger take to charge a 12 volt battery?

A .6 amp charger is a trickle charger. It would take days to charge a dead 12 volt battery with this charger. You need a 10 amp charger which will charge it in a couple of hours.


Can a 12 volt battery charger rated 8 amps charge a car battery?

Most definitely. A 1 amp charger can charge a car battery although it will take quite awhile. An 8-12 amp charger is a good standard home charger.


Can you use a 12 volt 2 amp charger to charge a 12 volt 7.2 amp battery?

Yes, you can.


How long to charge a 12 volt battery on slow charge with a 30 amp charger?

I doubt the charger is putting out 30 Amps on a slow charge. need more info on battery and charger.


How long will it take to charge a 12 volt battery on a 12 amp charger?

About 2 hours if the battery is 100% discharged.


Can you use a 6 amp charger to charge a 12 volt battery?

You can charge a 12 volt battery with a 6 AMP charger. The amount of amps put out by the charger is actually the rate which the power flows out from the charger, not the amount of volts it will charge. Volts and Amps are two different things. You can't charge up a 12 volt battery all the way, using a 6 volt charger. You can charge a 12 volt battery with a 12 volt charger rated at '6 amps'. It will charge the battery faster than a 2 amp charger will, but it will take longer than using a 12 amp charger. You probably don't want to use anything higher than a 12-16 amp charger for charging a 12 volt battery. Some chargers are equipped with a 60amp boost charge that is used for starting the vehicle, without having much of a charge in the battery. You DO NOT want to attempt charging a battery with it set to a 60amp boost charge. That is for starting vehicles only and could damage your battery. Keep in mind that the lower the amps are, that you use to charge the battery (1-2amps), will result in the charge lasting longer without recharging it, than if it was charged up at a higher setting (12-16amps).


Can you use a 2 amp 12 volt battery charger to charge a 12 volt battery?

A: Yes it can at 2 amp rate. Problems arises when the battery demands more the 2 amps then the power dissipation of the charger can be stressful or damaging


How long does it take a 6 amp charger to charge a 12 volt battery?

Around 4 hours on a dead battery.


Can you use 12 volt 2 amp charger to charge 6 volt battery?

No, the output of a 12 volt charger will overcharge and cause the 6 volt battery to boil out its electrolyte


How long does it take to charge a car battery using 12 volt 4 amp battery charger?

14 hours approx


Can you use a 12V 7Ah charger to charge a 12V 26Ah battery?

Yes, the amp hour rating gives you an idea of the capacity of the battery and charger. The charger and battery need to have the same voltages. i.e. dont try to charge a 6v battery with a 12 v charger. The battery will be charged until it is full.


What is the best motorcycle battery charger?

Any 12 V battery charger will charge a motorcycle battery. But it is best to get one with low amperage such as a 4 to 6 amp battery charger. You can use a trickle charger to keep the battery charged on my motorcycle during storage.

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