How to choose the correct battery charger? (+ How many Amp Battery Chargers do I need?)

With the development, the battery is replacing the high-pollution petrochemical power. As the battery is able to convert into electrical power. But the main subject is how to choose the correct battery charger so whoever is reading this article will get all the detailed explanations about how you can choose the battery charger and the amps needed by a battery charger. 

How to choose the correct battery charger? 

The following are a few points to be considered while choosing the battery charger:

  • Confirm the input voltage. 
  • Confirm battery type. 
  • Confirm the charging voltage current and charging time. 
  • The Cooling process and capability of the battery charger.
  • Confirm the appropriate charger port. 
  • Do have a safe charging mode and protection design. 
  • Battery Chemistry
battery charger
battery charger

Confirm the input voltage:

A person who is choosing a battery charger makes sure to check the input voltage of the battery charger if the input voltage is higher than the voltage the charger is showing then it will cause damage to the device that is being charged with that charger. The 110230 vac is the best battery charger which is designed as a Universal Global voltage and it is used in most countries.

Confirm battery type:

Identify which type of battery is of the battery charger whether it is a lead acid battery or Lithium iron battery. Confirming the type of battery will help a person to know about the supply power so that the battery would not get damaged. Also, the output voltage of the charger should be matched with the battery to prevent the battery from getting damaged. A charger is also considered a good charger if it has a charging curve that is modified according to the features of different batteries.

Confirm the charging voltage current and charging time:

Do check the voltage current and charging time before choosing the battery charger for example if the battery module of the device is 10 serial for that 42-volt output charges should be selected and if the battery module is 12 serial a 50.4-volt output charge should be selected which will provide sufficient charging voltage. The current size also affects the length of the charging time so a battery of 20 amps per hour should be chosen. Let us understand it by an example: a charger which is 4-ampere charger will fully charge within 5 hours but a charger of 8 amperes will take 2.5 hours to fully charge the battery.

The cooling process and capability of the battery charges:

The charger of the battery must have a fanless natural cooling air cool design and water cooling design. As having a fanless design will not cause the accumulation of dust on the fan. A charger should have an air cooling design as it will perform a function to achieve cooling effects and the water cooling design will cause better cooling effects. it will not have any noise when it is compared to the fan of the charger which uses a fan for cooling. Choosing a battery charger according to the environmental requirement is a more suitable battery charger.

Confirm the appropriate port:

A person before choosing a charger for the battery should check all the specifications of the DC Jack as it should match the device so that it charges the device. There are many brands of the battery which provide several types of DC jacks as per the satisfaction of the usage needs of different devices.

Do have a safe charging mode and protection design:

It is one of the most important functions a charger should have for charging the device safely and efficiently. The charges should have a high charging efficiency and optimized charging curve design, different charging modes such as pre-charge mode, constant current CC mode, constant voltage CV mode, and floating charging mode, A charging protection design such as OVP, UVP, SCP, reverse polarity protection, charging OTP, and timing protection and should meet all the safety regulation according to the specification. 

How many amp battery chargers do you have? 

The smart charger does have the basic ratio of the charger to battery size on average is 15 to 25% of the battery capacity for example, 

  • For a 100 AH battery, you can select a charger of 20A.
  • The battery capacity of 200 Ah needs a 40 amp charger
  • A battery capacity of 300 Amp Hours needs a 60 amp charger.
battery charger
battery charger

If the type of the battery is lithium then it is based on 30% of the maximum performance and lifespan that is it needs a 60 amp charger for 200 Ah. 


Now if a person is going to buy a charger for the battery they should consider all the above factors and should buy the charger according to these points as it will help by not damaging the charger and device. 


What happened if you charge a battery with too many amps? 

It will cause a risk of explosion or fire. 

How to match a battery to a charger? 

You should match the voltage of the battery charger with the battery. 

Rick Costa

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