How to Connect 4 12v Batteries to Make 48v?

When you want to connect 4 12v batteries to make 48v, there are some things that you need to keep in mind.

If you don’t do so, the batteries won’t work properly, and they will be damaged easily.

These are the most important things that we have learned in our experience of connecting 4 12v batteries to make 48v.

We have created this article with all these tips for people who want to learn how to connect 4 12v batteries together. We hope it is helpful!

This article will go over the things you need for connecting your four 12V batteries in series and parallel configurations so that they all add up to give you a final voltage of 48V.

You’ll also learn about how much current each battery can handle before it needs replacing or recharging, as well as what tools are needed for this project (hint: no soldering required!). Let’s dive right in!

How To Connect 4 12v Batteries Together to Make 48 Volts?

Here we go! First, do not connect 4 12V batteries together without any protection circuit because they can explode if something goes wrong during the charging process or when it discharges too much current at once.

You have to use a PWM controller with an appropriate BMS board so that everything works properly and safely.

How To Connect Them Together Correctly?

There are different ways of doing this but basically, what you should do here is connecting positive terminals on all batteries with each other, while negative terminals should be connected together as well.

In order to get a full voltage of 48V from these batteries, you should connect them in the following manner:

For example, connecting the + pole on Battery 1 to the – pole on Battery 2 will make a full circle when you take both of the + poles on Battery 1 and connect them to the – pole on Battery 2 again.

When you do this, batteries will be connected in series mode.

It’s also possible to use the same way of connecting 4 12v batteries together in a parallel configuration. You can connect both terminal poles of Battery 1 to the terminal poles of Battery 2 and connect both terminal poles on Battery 2 to both pole terminals of Battery 3.

After you finish the connection of the poles, both + pole terminals of Battery 1 are connected to the – pole terminals on Battery 2, and also both + pole terminals on Battery 2 are connected to the – pole terminals of Battery 3.

The same way is applied for both terminal poles of Battery 3, which is connected to the – pole terminals of Battery 4.

By doing this, your four 12V batteries will be connected in a parallel configuration.

Why Do I Want 48 Volts Instead of Just One 12 Volt Battery?

There are different reasons why you want to make 48 volts instead of using one 12v battery.

1. One reason is that it can be dangerous to certain power appliances directly from a 12V battery.

For example, some people use 48v batteries for powering their cars, and they get power from these batteries. It would be Footer Widgets very dangerous to get such a high voltage directly from one 12V battery.

2. It is very safe to get power from four 12V batteries connected together for 48 volts.

3. Another reason why you may want to use four 12V batteries instead of one is that it makes the wiring much easier. Let’s say you have a project that requires something like 10 amps, which is a lot of power.

One easy way to get around this is to buy a 12V battery with a higher capacity, like 18Ah. The problem with this approach is that it might be hard to find a battery of this size, and if you’re using an existing vehicle’s electrical system as your power source, you’ll need to connect your new battery in parallel with the old one.

This is where the 48-volt system shines. Since the middle voltage between 12V and 48V is 36V, you’ll sometimes find that using four 12V batteries gives you a perfect amount of power for your project.

What Are the Risks of Connecting Two Different Sized Batteries Together in Series or Parallel?

It is common for people to connect two or more different-sized batteries in series or parallel in order to power a device.

The risks of connecting these batteries together in either configuration include:

1. Overheating and fire

If two different-sized batteries are connected together in series, the smaller battery will take longer to reach its voltage threshold. If one of the batteries reaches its voltage threshold before the other, it will flow current into the over-voltage battery until it is fully charged. This can cause overheating and even a fire.

If two different-sized batteries are connected together in parallel, the smaller battery will become overcharged and explode.

2. Decreases voltage

Connecting two different-sized batteries in series will decrease the overall voltage of the battery pack. Connecting two different-sized batteries in parallel will increase the overall voltage of the battery pack.

If you are looking for a safer way to connect two or more batteries together, consider using an external battery charger with banana connectors. The external battery charger will regulate the voltage of each individual cell, regardless of its size or capacity, which reduces the risk of overheating, fire or explosion.

3. Short circuit

When batteries of different voltage and/or capacity are connected together in series, the resulting battery pack can short-circuit. This can result in overheating, fire or explosion.

Connecting two different-sized batteries in parallel can also result in a short circuit, but the risk is lower.

Final Thoughts!

Now that you have read this article, you must have learned about how to connect 4 12v batteries to make a 48v battery.

But remember, while this is an easy way to get a 48v power supply, there are some risks involved in doing so.

If you are looking to power a device that needs 4-48 volts, then it’s best to connect your batteries in parallel. But be aware of the risks of connecting batteries together.

For a safe way to connect your batteries, consider using an external battery charger with banana connectors. This will ensure that your batteries are charged properly.

If you have any questions or comments, please post them below.