How to connect lithium ion batteries

Can you wire lithium-ion batteries in series?

In this guide, we'll walk you through the steps of safely wiring lithium-ion batteries in series to create a higher voltage battery pack for your projects. Note that when connecting batteries in series you are increasing the voltage of the system.

How to wire lithium-ion batteries in parallel?

When lithium cells or batteries are wired in parallel, the current is split between all power sources in the group. To connect any two power sources in parallel, simply connect all positive connections together and all negative connections together. We hope this article helped you learn more about how to wire lithium-ion batteries in parallel.

When should a lithium battery be connected in series?

You should connect lithium batteries in series when your device requires a higher voltage than a single battery can provide. For example, if your device operates at 7.4V, connecting two 3.7V batteries in series would be appropriate. This setup is commonly used in applications like electric scooters, drones, or other high-voltage devices.

How do you connect two batteries in a series?

Create Series Pairs: Connect two batteries in series by soldering the positive terminal of the first battery to the negative terminal of the second battery. Do the same for the other two batteries. Combine Series Pairs in Parallel: Solder the positive terminals of both series pairs together using a wire.

How do I choose a lithium ion battery?

Use lithium-ion batteries with the same capacity and voltage ratings. Identify the positive (+) and negative (-) terminals of each battery. Positive will typically be red and negative will be black Ensure proper alignment to prevent accidental short circuits. Calculate the total voltage needed for your application.

Should you mix lithium ion batteries?

Consistent battery performance is essential, and mixing lithium-ion batteries of different brands, capacities, or types should be avoided. Always pay attention to battery polarity to prevent voltage drops or hazards. To effectively expand your battery bank, prompt action is crucial.