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You could have a fault in the battery or even a short if so replace the battery

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Q: When charging battery charger surges why?
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Can 5v charger charge a 7.5v battery?

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.


How long to charge a 7.2V NiMH battery?

You need to have a 7.2 or higher battery charger


How long will a 12 volt 150ah battery run a 2 amp load?

The charging time will depend on how much of a charge was left in the battery and on the charger you use to charge the battery. The more energy you have to put back in it, the longer it will take for a given charger. And some chargers will be able to deliver more current than others. This will result in a higher charging rate, and a lower elapsed time for the charging cycle.


Can you use an 18 volt charger to charge a 14.4 volt battery?

Yes, a standard battery charger produces 13.8 volts when it is charging a battery. If you are thinking of using a charger that you plug into the wall that is used for electronic equipment, don't. The battery usually wants more amperage that they can produce and the device usually will burn out.


How do you drop 12vdc 1000mA charger to 12vdc 500mA for 12v 7Ahr battery?

The current rating on a charger ("1000 mA", "500 mA"), usually means the currentthat the charger is capable of supplying if it needs to. It's NOT the current that'salways being pumped out.If your 7AH battery needs 500 mA at some time during the charging operation,then a 1000mA charger is capable of supplying it.

Related questions

What keeps a battery charger from over charging a battery pack?

Most good battery chargers are automatic and will stop charging when the battery is fully charged. But if the charger is a manual charger it can overcharge the battery. With this type charger it is up to you to remove the charger when the battery is fully charged. Normally this is based on the amount of time the charger takes to charge the battery pack. Operators manual will list the time.


What is the Makita Battery Charger used for?

The Makita Battery Charger is used for Makita batteries. This battery charger is capable of charging many batteries depending on the voltages for the batteries.


Will attempting to start an engine while charging a battery ruin the charger?

No


Do you have to disconnect a battery before charging?

No, you do not have to disconnect the battery. Just do not start the engine with the charger connected unless the charger is built for starting purposes.


What do you charge a lawn mower battery?

Not sure if the question is what to charge the battery with or how to charge the battery. So, I will address both: A regular battery charger can be used. IF you are going to purchase one, you really don't need a top-of-the-line, expensive charger. A simple 2 to 6 amp slow-trickle charger will do the job. To charge the battery, connect the red charger cable to the positive battery post and the black charger cable to the negative battery post, then turn on the charger until the battery is charged. If necessary, clean the battery posts and cables before charging. The battery charger will have more complete details for charging the battery.


LG Phoenix 2 wont turn on?

Either the battery is not retaining its charge - OR - the charger isn't charging the battery. Either way try using another battery - or charger.


What does it mean when it says battery not charging?

because you have just plugged it in it checks if it is a charger


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.


How do you stop the charging of samsung laptop battery?

The way to stop your laptop from charging is to unplug the charger from the computer. When the battery starts to get low on power plug it back in.


How long should you charge?

Depends on what you are charging and the output of the charger. That is why an automatic charger is always best. No chance of overcharging the battery.


Why do you have to connect a battery charger cable to the vehicle chassis when charging the vehicles battery while connected on the vehicle...why not connect to both posts instead?

If you disconnect without turning off the charger, the sparks caused may ignite the hydrogen discharged from the battery while charging.


Can 5v charger charge a 7.5v battery?

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.