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#Battery status in parallel connection series#

Series Battery Connection, Courtesy of EngineeringPassion If only two batteries were used then you would have a cable coming off the negative (-) terminal of the first battery to your application and a cable coming off the positive (+) terminal on the second battery heading to the application, as illustrated in the figure below. Connecting in series battery configuration is when you combine two or more batteries by linking the positive (+) terminal of the first battery with the negative (-) terminal of the second battery. Let’s explain this method with an example!įor this method, you will need at least two batteries of the same size and rating.

In series battery connection voltage adds and amperage rating (also known as Amp Hours) remains unchanged. You will need this configuration when you need to increase the overall voltage of the system. #2 Series Battery Connection – Increasing Voltage

The preferred method for keeping the batteries equalized is to connect to the positive (+) at one end of the battery pack, and the negative (-) at the other end of the pack, as illustrated in the figure above. When connecting batteries in parallel you will need a jumper wire to connect all positive (+) terminals and another jumper wire to connect negative (-) terminals. The parallel connection needs at least 2 batteries. As the amperage is increased to 80Ah you may need a heavy-duty cable to keep the cable from burning out. The connection will result in 12V, 80Ah capacity. Parallel Battery Connection, Courtesy of EngineeringPassion In the illustration below, you can see 4 batteries connected in parallel, the positive (+) terminal of the first battery is connected with the positive (+) terminal of the second battery… till the end, and the negative (-) terminal of the first battery is connected with the negative (-) terminal of the second battery and so on. The voltage remains unchanged in a parallel battery connection. This method is used when you want your application to run longer between charging. Let’s explain this method with an example! #1 Parallel Battery Connection – Increasing Amperage (capacity)Ī parallel battery connection is used when you want to increase the amperage (capacity) and keep the voltage the same.

Don’t use a typical 12v lead-acid car battery, however, you can use an electric vehicle’s lithium-ion battery if you no longer need it.

Don’t mix an old battery (weak) with a new one (causes charging imbalance).

Have batteries of the same size (same voltage and same amperage ratings).

Use batteries specifically designed for solar energy storage.

What do you need to know before connecting batteries together?īefore constructing a battery bank, make sure that you follow the tips below: We will describe each method briefly using illustrations to give you a clear concept. There are 3 methods for connecting batteries and constructing a battery bank: Series, Parallel, and Series/Parallel Combined. By connecting batteries together – Series, Parallel, and Series/Parallel combined, you are constructing what’s called a battery bank which gives you more power for your applications. Connecting batteries or cells is often required when you want to increase the voltage or amperage or both for various applications.