# How to Charge Two 12 Volt Batteries in Series?

Charging two 12-volt batteries in series can be a little tricky if you don’t know the right way to do it. A series connection is commonly used in applications where high voltage is required, such as in RVs, boats, and solar power systems. If you’re new to the world of batteries, you may be wondering how to charge two 12-volt batteries in series. In this article, we will answer some of the most frequently asked questions about charging two 12-volt batteries in series and provide you with step-by-step instructions to ensure that your battery bank is charged evenly and effectively.

## Can you charge 2 12V batteries in series?

Yes, you can charge two 12-volt batteries in series. When two 12-volt batteries are connected in series, they create a 24-volt battery bank.

## How do you charge two 12-volt batteries in a Series 12-volt charger?

To charge two 12-volt batteries in series using a 12-volt charger, you need to connect the positive terminal of the charger to the positive terminal of the first battery, and the negative terminal of the charger to the negative terminal of the second battery. The remaining positive and negative terminals will be connected to each other. This will ensure that each battery will receive 12 volts of charging power, and they will be charged equally.

## How do you charge two 12-volt batteries in a series with a 24 volt charger?

If you have a 24-volt charger, you can use it to charge two 12-volt batteries in series. Simply connect the positive terminal of the charger to the positive terminal of the first battery, and the negative terminal of the charger to the negative terminal of the second battery. Make sure to connect the remaining positive and negative terminals to each other. This will ensure that each battery will receive 12 volts of charging power, and they will be charged equally.

## Can I use a 12V charger to charge two 12V batteries connected in series without disconnecting them from each other, and with no load connected?

No, it is not recommended to use a 12-volt charger to charge each one of two 12-volt batteries connected in series without disconnecting them from each other. Charging the batteries separately can cause an imbalance in the battery bank, which can lead to reduced performance and a shorter lifespan. It is best to use a 24-volt charger or a charger designed for a series battery bank to ensure that both batteries are charged evenly.

In conclusion, charging two 12-volt batteries in series is a common practice, and it can be done easily with a 12-volt or 24-volt charger. It is important to ensure that both batteries are charged equally to prevent an imbalance in the battery bank. By following the steps outlined above, you can safely and effectively charge your two 12-volt batteries in series.

Phil Borges is a battery aficionado. He's written extensively about batteries, and he loves nothing more than discussing the latest innovations in the industry. He has a deep understanding of how batteries work, and he's always on the lookout for new ways to improve their performance.