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Long-time charging with low amps is the best for keeping the battery’s lifetime long. Usually, a standard car battery charger is giving out 4-15 amperes. 2-4 ampere is typical for maintenance charging, and it will take around 24 hours to fully charge a dead battery at this load.

## How long does it take to charge car battery at 4 amps?

Charging a regular car battery with a typical charge amp of around 4-8 amperes will take about 10-24 hours to charge it fully. To boost your battery enough to be able to start the engine, it would take around 2-4 hours.

## Will a 4 amp charger charge a car battery?

A dead car battery takes anywhere between 4 to 24 hours to be charged fully. … Usually, a common rate for car battery chargers is a 4 amp one, and a dead 52Ah battery will need at least 10 hours to charge fully.

## Is 4 amp battery charger enough?

The Battery Tender 4 Amp can charge both 6 and 12 volt systems and is powerful enough to charge a car. If you can only have one charger out of this trio, it will be this one. Finally, the Battery Tender 5 Amp is powerful enough to charge a car battery or maintain an RV battery but can only charge 12 volt systems.

## Is 4 amp a trickle charge?

There is a two amp trickle charge rate for six volt batteries, and a four amp trickle charge rate for twelve volt batteries.

## Should I charge my battery at 2 or 6 amps?

For faster charging, get a higher amperage charger.

If you need a charge in a hurry, it makes sense to increase the amperage. Going above 12 amps can be risky if done for an extended time. Charging for too long puts the battery at risk of exploding. To avoid this, only use chargers above 12 amps for an hour at a time.

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

For sure, it takes a different amount of time to charge different types and sizes of batteries also, but there are times for a normal-sized car battery around 62 Ah. Here is how long it takes to charge a car battery: 2 Amp charger: 24 to 48 hours. 4 Amp charger: 12 to 24 hours.

## How long does it take to charge a battery at 5 amps?

A charger with 15 amps, for instance, will take about two hours to fully charge a battery at a 25-percent discharge value. Chargers with only 5 amps, however, will need a full six hours with the same battery.

## How many amps does a battery need to start a car?

400 to 600 amps will be more than enough to jump-start any normal, consumer vehicle. Commercial vehicles may require up to 1500 or 2000 amps. Compact and small vehicles can be boosted with as little as 150 amps.

## Does amperage matter when charging a battery?

We recommend higher amperage to ensure cooler power supply and optimal charge time. If you get a charger with amperage less than your original power supply, you risk overheating your charger, burning it and in many case your device will stop functioning and/or charging.

## How many amps should a battery maintainer be?

For general use, any battery charger, or trickle charger, that puts out between about 1 and 3 amps will do, and you don’t really need one with float mode monitoring unless you want to be able to leave it connected for some reason.

## How many amps do I need to charge a 12 volt battery?

A 12-volt automotive battery, for instance, takes a while to charge. In fact, fast charging for this kind of battery is not recommended. 10 amps are the recommended current.

## Is it better to charge a car battery slowly?

The best way to charge a car battery is by slow-charging it for your battery’s health. Charging a car battery too fast can actually damage it. Therefore it is better to always charge with lower amps during a longer period instead if you are not in hurry.

## How do you slow charge a car battery?

Use a Trickle Charger

A slow charge is much better, as batteries tend hold the charge for a longer period of time with this method. The trickle charger has an electric cord with a plug and two jumper cables with alligator clips.

## Should I charge my battery at 2 or 10 amps?

You would use 10 amperes on a car battery and 2 ampere on whatever small batteries you might want to charge that still use the same voltage. For example, a motorcycle battery could use the 2 ampere charging option.

## Can I charge my car battery without disconnecting it?

Yes – you can. Just be sure to connect the positive (red) wire first and be sure that your car charger has the correct setting(s) before you connect to the battery.