Saturday, November 26, 2022

How To Charge A Dead Car Battery With A Charger

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How to Charge a TOTALLY Dead Car Battery with Kent Bergsma: Battery Clinic Part 5

They are low amp chargers that generally produce between .8 and 2 amps.

Some battery charges have both a 2 amp and a 10 amp setting so they can be used in a maintenance mode or charging mode.

For automotive lead-acid batteries batteries, anything under 10 amps is considered a slow charge.

20 Amperes or higher are fast chargers.

It’s All About The Amperage

Imagine you’re sprayed with 120-degree water, coming from a 1/4-inch spigot. You might be uncomfortable, and a small spot on your body might get burned, but that’s about it. Now, imagine you’re sprayed with the same 120-degree water, but it’s coming out of a fire hose. Even if it wasn’t scalding hot, it would be painful. But scalding hot could be deadly.

In electrical power, think of the voltage as temperature. Think of the water flow as current . A car battery is typically 12 volts, not much more than our home electronics gadgets. A typical 9-volt gadget battery produces about 400mAh to 600mAh. Effectively, it can produce roughly five hundred milliamps for about an hour before it runs out of juice. A car battery has a capacity of about 48 amp-hours.

In other words, a car battery produces 96 times more current than a transistor radio battery. If you get a shock from a 9-volt gadget battery, you might feel a tingle. If you get a shock from a car battery, you could die.

Bottom line: When you start tinkering with car batteries, do it with care and respect.

How Long To Charge A Car Battery At 30 Amps

A 30 amp charger can charge a 50% discharged small car battery in about 1 hour, a mid-sized battery in 1 hour, or a large car battery in 2 hours. Double the times if 100% discharged. Its not recommended to use this large of a charger.

30 amp chargers give off an amperage at more than 50% of the estimated amp hours of a typical starting battery and could be hazardous and shorten the lifespan of your battery.

Use a 30 amp charger at your own risk.

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Will A Trickle Charger Charge A Dead Battery

A certifiably lethal present of DC energy is pumped into the cars battery, and miles of vary are added in quick order. Teslas V3 superchargers pump out as a lot as 250 kW, and Electrify Americas automotive defibrillators fireplace out up to 350 kW of heart-stopping power. But, like all charging, the flow is throttled back when the car batterys state-of-charge is low or excessive. And autos capability to accept DC charging varies broadly. The Porsche Taycan, for instance, can charge at as a lot as 270 kW, whereas a Chevy Bolt EV can handle only 50 kW . Firstly, take a look at the car battery charger you are going to use and see what number of ampere it gives out.

So itll take 6 to eight hours for the green gentle to return on. Fortunately, the Battery Tender Plus has the ability to continue to provide its full current even after it has converted to the lower, float, upkeep charge voltage of thirteen.2 volts. When the charger turns the green gentle back on, it additionally drops its output voltage to this float, maintenance charge degree of 13.2 volts. So the brief reply is Yes, youll be able to leave the Battery Tender® Plus battery charger related to a battery even when its getting used to provide energy to another equipment. However, that is positively not a easy sure or no type of query.

What Causes A Battery To Go Flat

How Long does it Take to Charge a DEAD Car Battery

There could be many reasons why your car battery went flat. The most common reason is that you forgot a light or something similar in the car before leaving it. It can also be a problem with some electrical consumer that does not want to switch off when you turn off the ignition.

Also, a bad car battery can cause your battery to drain. To learn more about the different causes, you can see out an article about the main reasons why your car battery is flat.

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Charge A Car Battery With A Wall Outlet Using A Home Inverter

Using a home inverter to charge up your car battery isnt a very well known method and required some more equipment you shouldnt use this method frequently you can use it once in a while

Inverters are the electrical device that used to convert alternate current that provided from a wall outlet to the direct current that is supported by car battery here is how to apply this method

Step 1: The first thing the inverter should be disconnected from the power supply before setting up connections, connect the negative port of the battery to the black wire of the inverter, and the positive port should be connected to the red port of the positive port of the inverter

Step 2: double-check the connections and make sure that it is as above, then plug the inverter into the power outlet.

Step 3: the high power supply that coming from inverters may charge the battery from 1.5 to 3 hours, this easy method should only be used when you are in a hurry.

Is A Higher Amp Charger Ok To Use For My Car Battery

I would heavily discourage using a charger greater than 10 amps when charging a car battery. In fact, I would stay in the 2 to 8 amp range. I think 5-amps is the sweet spot when it comes to vehicle batteries. If you have a truck, you might get away with a 10 or 15 amp charger, but a lower one would still be healthier for your battery.

Batteries will tend to overheat, overcharge, and boil electrolyte off when they are receiving an amperage greater than 25% of their total amp hour rating.

Most car batteries are in the range of 40 to 70 amp hour equivalency. Truck batteries and other larger vehicles or those with lots of electronics might get up in the 80 amp hour equivalency range or higher.

If you have a 50AH battery and you hook a 30 amp charger to it, you are risking overheating it, warping the plates, and losing electrolyte solution through evaporation due to electrolysis. It also increases the production of hydrogen gas and hydrogen sulfide .

A slower charge gives the plates in the battery more time with less stress to convert electrical energy from your charger into chemical energy.

It might take an extra hour or two, but its worth it for a healthy battery.

If youre looking for a solid charger and/or maintainer, I recommend this 5-amp charger from Amazon. It is gentle on your car battery, can charge it overnight, and can be left connected indefinitely for long-term storage!

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These Are Not Your Daddy’s Trickle Chargers

Because we’re sheltering-at-home , we decided to pick up two trickle chargers. These devices won’t rescue a truly dead battery but can keep working batteries in good condition over the long haul.

Now, I don’t know about you, but I remember the car chargers of my youth. They looked a lot like the image from EDN shown at the top of this article. My dad had this rusted box skinned in sheet steel that he would sometimes hook up to one of our cars. He had to crank the mechanical timer knob and another to specify the current going into the car. It was a pain, and it wasn’t terribly reliable.

The chargers I bought are not like that. They’re smart. Specifically, I picked up two Foxsur Automatic Smart Battery Charger/Maintainers, and that brings up an important point. This class of device is more properly referred to as a battery maintainer. The idea is it keeps the battery maintained, topped up, and ready to use.

They’re smart. All you do is hook them to your battery, set it, and forget it. They charge until the battery is topped off, and then they stop — all automatically. They adjust dynamically for the type of battery you have and for the condition of the battery you’re charging.

Essentially, the only work you need to do is hook them to the battery and plug them in. They do the rest.

Check The Output Power

How to Charge Dead Car Battery With a Laptop Charger

Ideally, you want to slow charge car battery components if youre without a charger. The trickle effect ensures that the battery doesnt overcharge, fume or outright explode. Because of these volatile conditions, Battery University suggests always monitoring a charging session.

Check your output power on the power source by using your wire probes. Verify the voltage and current. While you have the probes out, check the voltage on the questionable car battery. Youll have an idea of how long the charging session will take with these values in mind.

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Charge Your Battery With A Portable Charger

Using a portable jump starter is an easy way to charge your battery while alone. The process is pretty much the same with some small differences. Lets go over the steps now:

  • Make sure your vehicle and the jump starter are both turned off.
  • Connect the charger to your battery like you would if using jumper cables. Place the red clamp on the positive terminal and the back on the negative.
  • Set the voltage and amperage on your portable charger. For better results, set them lower and leave the charger on for longer. However, if youre in a hurry, higher amps can charge your battery quickly.
  • Let the charger do its magic. After a while, see if your vehicle starts and follow step 7 above.
  • How To Charge An Atv Battery With A Manual Charger

    You can charge the ATV battery while its still in the vehicle, or you can take it out. Just make sure you charge it in a well ventilated area. The charging process produces flammable gasses.

    If you are using a manual charger, check the voltage of the battery using a voltmeter. This will tell you how low the battery is, and how much time itll take to recharge it.

    Next, connect the red lead of the charger to the positive terminal of the batter, and the negative lead to the negative terminal or a piece of metal around the engine area.

    Set the manual charger to the right charging current. To be safe, select a current thats no more than a tenth of the batterys Ah. For a 30Ah battery, set the current on the charger to no more than 3A.

    Plug in the charger and start the charging process. Keep monitoring the battery charge level. When it gets to 80%, turn down current to half what it is. This allows the battery to fully charge.

    When its fully charged, switch off the charger immediately. If youll be leaving the battery sitting for a long time, you can turn on maintenance mode, if the charger has one or buy a battery tender to keep it charged.

    If you have a traditional flooded lead acid battery, heres a detailed video on how to fill and charge it.

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    How Long Does It Take To Charge An Atv Battery

    To estimate how long itll take to charge a fully discharged battery, divide its Ah rating with the current you are charging at.

    A 30Ah battery being charged at 3A will take about 10 hours to get to full charge.

    However, the actual charging time will vary depending on temperature, the health of the battery, and the quality of the charger.

    For empty batteries, charging time could be anywhere between 10 and 20 hours. A half full battery will take between 6 and 10 hours to recharge.

    Does Revving The Engine Charge The Battery

    How Long Does It Take To Charge A Dead Car Battery ...

    The battery will charge faster if you rev the engine faster. Why? Because the faster the crankshaft turns, the faster it turns the belt that runs the alternator. And the faster the alternator turns, the more electricity it produces to run all the electrical stuff in the car and recharge the battery.

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    How To Charge A Dead Car Battery With A Charger

    Now we are going to talk about the longer method for charging a car battery, but it is the more reliable method. Sometimes a battery is too dead to jump, and that is when you will have to try charging it with a charger. Other times you wont be using the battery for a while, and that is another good reason to charge a car battery with a charger. As you will see charging a battery with a charger is just as simple as jumping a car battery, so you shouldnt be afraid to charge your car batteries at home.

    Before going into details about how to charge a car battery with a charger although a lot of you may be wondering can you even charge a dead battery. The answer is yes you can, but it will take some time, especially if the battery is really dead. Depending on the cold cranking amps of the battery and the amps at which you are charging the battery will determine how long it takes. At six amps a battery can take eight hours for the smallest ones to charge and up to sixteen hours for stronger batteries. At higher amps, you can cut this time in half. For example at ten amps the time it takes is half, and at thirty amps it only takes between two to four hours to charge a battery.

    So now that some of these questions are out of the way we will go into the steps of how to charge a car battery with a charger.

  • Get the charger out.
  • Put the charger in a place where cables arent going to be in the way and there is open space around the charger.
  • Plug the charger into a power supply.
  • What Car Battery Charger Should I Use

    To determine the type of charger best for your car battery, determine the amp rates you need in a charger. There are many smart chargers available today which can be used easily and turn off or on into the maintenance mode automatically once the battery is charged fully.

    A greater amp supply is provided by cheaper chargers, compared to what is written on their boxes. Therefore, it is recommended to always get a high-quality charger from an authorized manufacturer and dealer only. This will not just save your car battery but will also minimize the damage risk for your car.

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    The Causes Of A Failing Car Battery Charge

    Now that you know how to charge a car battery with a couple of different methods. So we can look at a few reasons why a charge might not work. First, the most common reason why charging a battery might not work is that you might not have had the charging cables connected all the way. Make sure to connect the cables completely before walking away or else you might come back to a battery that still hasnt changed. Along with this make sure the charger is plugged in all the way and on.

    The next reason why a charge might fail is that the terminals on the battery may be dirty. Clean off any corrosion from the terminals before charging.

    Lastly, the battery might be too old to charge. If the battery is old, test it to see if it can even hold a charge. If it cant, then there is no point in trying to charge it and instead, you will need to replace it.

    Whats The Best Charger For An Atv Battery

    How To Correctly Charge a Dead Car Battery -Jonny DIY

    The right charger for your ATV battery depends on what kind of battery you have.

    The first step is identifying which battery is in your ATV. It should be labelled clearly on the side.

    If you cant read the label or there isnt one, heres how to tell which battery you have.

    If it has liquid inside, and has removable caps on top, thats a flooded lead acid battery. Itll also have a partially clear housing, allowing you to monitor the level of the liquid inside.

    If it has liquid inside, but has a flat top with no caps, thats a sealed lead acid battery. It can also be a VRLA battery.

    If the battery looks like a lead acid battery, but has a flat top and you can hear any liquid inside, thats a GEL-cell battery or an AGM battery.

    If the battery is small and very light, thats a lithium ion battery.

    All ATV batteries, regardless of the type, need a 12V charger that delivers a low current of between 1 and 3 amps.

    Flooded lead acid, sealed lead acid, VRLA and AGM batteries can be charged with a manual charger. However, you need to monitor battery charge using a voltmeter to ensure you do not overcharge it.

    This is especially important for sealed lead acid and VRLA batteries, as theres no way to top them up after overcharging and they could get permanently damaged.

    For Gel batteries, you need a charger specifically for this type of battery. The same goes for lithium ion look for a lithium ion-compatible charger.

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    How To Charge An Auto Battery Without A Charger

    Having a dead car battery is an inconvenience and can be dangerous. Whether you’ll be late for work or in an empty parking lot late at night, fixing the problem and getting back on the road is important. Without a car charger, quick thinking, a roadside maintenance kit and basic knowledge will help. Having jumper cables and a helpful citizen nearby will help you get your battery charged and the ability to get back on the road while putting you out of harm’s way.

    Step 1

    Keep an auto repair kit in your trunk. The kit includes a blanket, screwdriver, extra fuses, flashlight and other items needed at the most inconvenient of times during emergencies.

    Step 2

    Take the jumper cables out of the kit. The jumper cables have two metal clamps on each end. They are colored in red and black plastic for the positive and negative terminals of the charging and charged car.

    Step 3

    Keep your cell phone charged in case of emergency. Call friends or family to meet you and help you to or find a nearby business to have someone help you jump the car.

    Step 4

    Turn your keys to the “off” position. Ensure your car is in a safe position and won’t move. If you are on a hill, engage the parking brake. Lift your car’s hood.

    Step 5

    Step 6

    Allow your car battery to draw a charge for a few minutes. Start your car. Your car should start immediately. If it doesn’t, wait a few minutes and start it again. Once the car is started, let it run and gain a charge before turning it off. Disconnect the battery cables.

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