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Battery Charging Voltages – Introduction and Types

Battery Charging Voltages – Introduction and Types

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  A few years ago, there were not a lot of battery types known to man. That was the time where almost every other battery was the lead-acid battery, and the same charger was used for charging each battery. Things have drastically changed now and there are a lot of different types of batteries available.

  With different batteries, it is also necessary to charge them in the right way as it is the best choice for the longevity of your battery as well as battery usage experience. So, here we will be discussing the battery charging voltages of different batteries.

  AGM Battery Charging Voltages

  The first one that we are going to discuss here is the AGM battery. It is the Absorbent Glass Mat battery so the technology for the production of current is different. It is the reason the way of charging these batteries is also different. If we take a look at the applications of these batteries these are mainly made to replace the lead-acid batteries for vehicles and other applications in extreme conditions.

  To charge the AGM battery a voltage of 12 volts is needed. However, the current requirements are very different. While there are dedicated AGM battery chargers available, if you need to use some other 12-volt battery charger then you need to be careful.

  What is the effect of using different types of chargers for AGM batteries?

  The following are the ways how different types of chargers can affect your AGM battery.

  Using standard charger

  If you are using a standard battery charger with a 12-volt battery setting, then it is necessary to maintain the starting charging current at a rate of 0.15 C. Having a meter to monitor this current is necessary. Another thing you need to be careful about is the battery charging time.

  Using any standard battery charger means that there are high chances of damaging your AGM battery so you must not charge it for more than 20 hours whether the charging is complete or not.

  Using a smart battery charger with AGM battery compatibility.

  In the case of smart chargers, there is no need to monitor anything. These chargers will detect the battery type and charge it accordingly.

  Car Battery Charging Voltages

  The most common type of battery charging is for car batteries. The car batteries are usually lead-acid batteries or dry batteries. Apart from their physical differences, there are a few differences between them. However, the charging voltage and process are somewhat similar.

  When you are charging a car battery the voltage will tell you a lot about how things are going. Whether the battery is good or not, whether you are having a high voltage issue or are things normal. So, here are different types of car battery charging voltages:

  Normal Car Battery Charging Voltages

  When your car battery is discharged and you are charging it, the charging voltage will tell you about the percentage of charging of the battery. If the charging voltage is between 13.8 and 14.3 volts while you charge the battery, then it is good for the battery.

  Low Battery Charging Voltage

  There could be an issue with the charger sometimes. If the voltage is not near or above 13.8 volts, then it is an indication of the low battery charging voltage. In most cases, it is nearly 12 volts.

  High Battery Charging Voltage

  If you are charging your car battery and the charger is giving a voltage higher than 14.4 volts, then there is surely some issue with the charger. It is bad for charging the battery as this might lead to damaging the battery. On long-term usage, there could be permanent damage to the car battery. Some indications of this issue include:

  The battery gets very hot when charging

  Battery bulging on the sides

  The electrolyte of your car battery evaporates sooner than usual

  Battery terminals corroding

  Lithium Battery Charging Voltages

  When it comes to charging lithium batteries things can get pretty complex. The reason is that it is the technology that is used for making several types of batteries. There could be a case that you have a flat lithium battery. There could be a case that you have a single 18650 battery.

  There could even be a case that you have a battery pack that is made from using a type of battery in different series and parallel configurations. So, the charging voltages are to be set accordingly. Some common types of charging currents used for lithium batteries and battery packs are:

  5 volts

  12 volts

  24 volts

  48 volts and some others as well

  Why is using a smart battery charging system a good choice for charging lithium batteries?

  When you have some lithium batteries that you need to charge you may not know the exact method of charging those batteries. The different battery pack configurations need to charge in different ways as every cell needs to be charged equally.

  Using a battery pack helps in dealing with the process efficiently. This is a circuit intelligently designed so that it can configure the best charging method for your battery making the whole charging process safer.

  What matters the most when you are charging lithium batteries?

  The battery cycle is something that matters the most. Completely draining a battery means that one complete charge cycle has been used. The lithium batteries work in a way that there is some specific number of charge cycles. So, when you are charging the lithium batteries make sure not to drain the battery completely. It is the only way that you can preserve the life of your batteries.

  Conclusion

  Knowing about the charging voltages of your battery can save you from facing some dangerous situations. Batteries are designed to be charged only using their dedicated chargers and if you accidentally put the battery on the wrong charger there could be issues with batteries. In the worst case, this could lead to an explosion and fire.

  We hope that by now you know the charging voltages of different types of commonly used batteries.

 

 

 

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