# How long does it take to charge a dead car battery at 2 amps?

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If your battery has 60 amp hours, then a 2 amp charger requires 30 hours to fully charge your battery. To determine this, you just divide the number of amps by the amp hours.

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

It is best to slow charge the battery. Slow charging rates vary depending on the battery’s type and capacity. However, when charging an automotive battery, 10 amps or less is considered a slow charge, while 20 amps or above is generally considered a fast charge.

## Can you overcharge a car battery at 2 amps?

A: If you leave the charger connected continuously, even at a mere 2 amps, the battery eventually will die. Overcharging a battery causes excessive gassing — the electrolyte gets hot and both hydrogen and oxygen gas are generated. … On sealed batteries, the buildup of gases could cause the battery to burst.

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## How long does it take to trickle charge a car battery at 2 amps?

What is this? If your battery is completely dead, it will take a 1-amp trickle charger 48-hours to recharge it fully; meanwhile, a 2-amp trickle charger could do it in 24-hours.

## 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 a car battery take to charge at 10 amps?

Car batteries range from 40AH to 110AH, and alternators range from 45 amps to 200 amps. If you are using a battery charger, a 10 amp charger will take 4 to 11 hours to fully charge the battery, a 2 amp charger will take 2-4 days. Of course you don’t have to get the battery to full charge to get it to start the car.

## How long can I charge a car battery at 10 amps?

Depending on battery size, charging a car battery with a 10 amp charger can take between 2 and 7 hours. The larger and more drained the battery is, the longer it takes to charge. Consider your timeframe when deciding how many amps to use, and never let the battery overheat as it’s extremely dangerous.

## How do I know when a car battery is fully charged?

Observe the voltage readout on the meter. This indicates the charge of your battery. Should you see a reading of at least 12.6 volts, then your battery is fully charged. Any number lower than 12.6, however, indicates a battery that is not holding a full charge.

## Is 2 amp a trickle charge?

Trickle chargers typically produce 1-2 amps, which explains the slow charging process. This slow charge prevents the battery from overheating or becoming overcharged. It is important to note that trickle charging is used only for cars that are not being driven frequently.

## How long can a car battery hold a charge when not in use?

When stored properly out of the car in a secure place, a detached car battery has the chance to last up to six months. Just like any other car battery, it will need charging, but not as often as if it were attached. Giving the battery a charge around every 12 weeks is a good rule of thumb.

## How long does it take to charge a car battery from flat?

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. The best way to maintain a long life for your car battery is by recharging it slowly.

## How long does it take to charge a car battery after a jump?

Remember: After you’ve done a jump start, you’ll need to keep the vehicle’s engine running for around 30 minutes to allow the alternator time to charge the battery sufficiently.

## How long should it take to jump a dead battery?

Jumpstarting your car should only take about 5 minutes once you have the cables hooked up. If it won’t start after leaving it connected for 5 minutes, your battery’s either dead or being jumped wrong. To find the problem, start by checking your cables.

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## How long does it take to charge a 12 volt battery at 6 amps?

A 6 amp battery charger takes about 4 – 10 hours to fully charge a 12V car battery, depending on the battery’s capacity, depth of discharge, and battery temperature.

## How long does it take to charge a deep cycle battery at 6 amps?

Like a car battery of 100Ah you can do the math easily: from empty to full needs 100ampère-hour, so charging with (really) 6 Amprères will take 100/6 is about 17 hours, BUT since the 100Ah is what you can drain from it (output) it does not take into account the losses, so I would guesstimate 20–22 hours.

## How do you know when a battery charger is done charging?

What should a battery charger read when fully charged? If the needle sits at around 6 amps on a 12 amp charge setting, that indicates that the battery is fully charged. If you use a 2 amp setting, the needle will settle at the end of the small red triangle.