Will A Battery Tender Charge A Low Battery?

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Before you can make use of your truck or motorcycle, the battery must be fully charged. This is because the battery passes current to every electrical component in your car before it can run.

However, after using your car for some months, you had to set it aside due to your province’s present atmospheric condition.

Meanwhile, before you set the truck or motorcycle aside, you ensured that the battery was well charged, but when you went back to your car or motorcycle, it didn’t start because the battery was low.

Then you brought out the battery tender you bought, but you are not sure of its capability. So, “will a battery tender charge a low battery?”

 Yes, a battery tender will charge a low battery. A battery tender is a rebuilt contemporary battery charger manufactured to retain the charge of a battery.

If the battery tender is connected to the battery, it has to restore every lost charge of the battery. It cannot harm or damage the battery if it is not disconnected, this is because once the battery is filled with enough charge the battery tender would automatically turn off. 

In addition, the battery tender can detect when the battery power has been discharged, unlike a typical battery charger that keeps charging the battery even when the battery is fully charged.

So, the battery tender you bought will charge your low truck battery. You can also leave it attached to the battery but ensure you check on it constantly. 

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Can a battery tender charge a dead battery?

Of course, a battery tender can charge a dead battery. However, this positivity would depend on your battery’s voltage. If your battery is 14.5 volt but dead, it would take about 15 hours to recharge the battery to a capacity of 70%. While, if your battery is dead with 4 volts, I doubt if a battery tender would be able to charge up the battery. In this case, you would have to purchase a battery for your car or motorcycle. 

Technically, a good battery must have at least 13.5 volts even when it is discharged. If you are the type that keeps a battery tender or jumper cables in your trunk for unexpected issues, then they would both work for you when your car battery stops on the road.

You can use the battery tender to recharge your battery, and also get a fully charged car to help you recharge your car battery with the use of jumper wires.

However, if you notice you have to jump-start your automobile every time, then you would need a new battery. When you get a new battery, you would save your automobile from any risk such as changes in the structural appearance, damaged bindings, damaged alternator, and other components that could be damaged beyond remedy. 

How long does it take a battery tender to charge a battery?

The duration of how long a battery tender will charge a battery depends on the battery’s voltage. If a battery is 15.5 volts but is dead, then it would take at least 15 hours to recharge the battery. However, if you are charging a dead battery with a battery tender of 3 amperes, it would take about 24 hours to get the battery fully charged.

How is this possible? Some batteries are about 46 amperes, and it takes about 0.856 amperes charge per one and a half hours. So, with 3 amperes, your battery would be fully charged in a day or if possible a day and a half. (Read Also:Do Alternator Whine?)

Furthermore, if you decide to charge your battery at 5 amperes, it would take about 14 hours to fully charge your automobile battery. Just like the explanation I made earlier regarding the amperes used in producing a charge per hour, it is the same way with this ampere.

Although if your battery has a very low voltage, the battery tender might not be able to charge it. So, you would be left to purchase a new battery for your automobile and also use a battery tender to recharge it. 

Withal, if you purchase a new battery but you are unable to use your car due to the weather condition, you can attach the battery tender to the battery to maintain the battery charge. Although you would always have to check on the battery and the battery tender to ensure they are in a good condition.

Notwithstanding, you would not have to worry about your battery getting dried up with the battery tender connected to it. 

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How will I know if my battery tender is charging?

If your battery tender is charging your battery, the battery tender light indicator would show a red light. However, if your battery has received full power, the battery tender would indicate a green light and turn off. Once the battery tender goes off, your battery would not be affected.

The battery tender would turn on itself with a red light when your battery discharges on its own. (Read Also:How Long Can You Leave A Battery Tender On A Motorcycle?)

A battery tender is a smart device and only if it is faulty or the battery is faulty is when it becomes an awkward situation. This is why it is always advisable to check on the battery and the battery tender at least every week. A typical salesperson would tell you to connect the battery tender to your battery and set it aside. Of course, you can do that because a battery tender is trustworthy. 

However, if you set the two components aside, you wouldn’t know if the battery or the battery tender has a fault. You should keep in mind that regardless of how good the product you purchased is, it would still develop one or two faults.

This saying also applies to a battery tender. So, it is important to check up on it after connecting it to your battery. By checking upon it, you would be able to clean any corroded part on both the battery and the battery tender.  on it, you would be able to clean the corroded part on both the battery and the battery tender. (Read Also:Will A Bad Alternator Diode Drain The battery?)


Are trickle chargers worth it?

Of course, a trickle charger is worth whatever price is tagged on it. A trickle charger is just like a battery tender and it is very durable. However, you would have to ensure you buy the maintenance trickle charger and not the basic trickle charger. 

 The maintenance trickle performs the same job as the battery tender. However, I know quite a few trickle chargers that I can recommend to you and I’m sure they would serve you well. 

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  • NOCO GENIUS 1, 1-Amp Fully-Automatic Smart Charger, 6V and 12V Battery Charger, Battery Maintainer, Trickle Charger, and Battery Desulfator with Temperature Compensation

 This trickle charger is a battery maintainer and it performs the same duty as a battery tender. This charger provides a stronger engine ignition and extends the lifespan of your battery. It auto-detects your battery with its automatic sulfation and acid stratification detection.

You can use this trickle charger in different weather conditions. You can use this charger for your motorcycle battery and your automobile battery. Plus, it perfectly charges a battery with at least 12 volts. 

  • NOCO GENIUS 2, 2-Amp Fully-Automatic Smart Charger, 6V and 12V Battery Maintainer, Battery Charger, Battery Maintainer, Trickle Charger, and Battery Desulfator with Temperature Compensation-

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 This trickle charger might not look different to you, but it is quite different if you look into it well. How? The first product I recommended has one ampere but this trickle charger has two amperes. With these amperes, your battery would be charged faster.

If the trickle charger with one ampere charges your battery for a day, this trickle charger with two amperes would charge your battery for 12 hours. (Read Also:How Many Amps Should The Alternator Put Out?)

So, if you can’t wait for a whole day to charge your battery, then this trickle charger would be a good choice. Aside from the charging duration, this trickle charger can charge batteries with 6 volts and 12 volts. It also has automatic detection to detect if your battery loses a charge. 

  • NOCO GENIUS 5, 5-Amp Fully-Automatic Smart Charger, 6V and 12V Battery Charger, Battery Maintainer, Trickle Charger, and Battery Desulfator with Temperature Compensation- 

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 This trickle charger is different from the two trickle chargers I have recommended. It has 5 amperes to charge your battery faster than the other ones. It has the capacity to revive a completely dead battery back to its normal volt. It can also charge an old battery and charge your battery within 10 hours. Aside from this, the remaining features are similar to the two I’ve recommended.

Will A Battery Tender Charge A Low Battery – Conclusion 

Will a battery tender charge a low battery? A battery tender has the ability to charge a low battery with a voltage of 13.5. However, if the battery volt is lower than that, the battery tender would not charge it. You can check out the maintenance trickle chargers I recommended, I am sure one of them would revive your dead battery. Kindly put down further questions below.

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