Can a lithium battery be connected in a series?

At Valen, we don’t recommend series connecting Lithium batteries. However, Lithium batteries can be placed in parallel if required and done correctly. To explain why it is best to first understand how Lithium battery technology works.

Can lithium-ion batteries be connected in parallel or in series?

Connecting lithium-ion batteries in parallel or in series is not as straightforward as a simple series-parallel connection of circuits. To ensure the safety of both the batteries and the individual handling them, several important factors should be taken into consideration.

Why do we connect multiple lithium batteries to a string of batteries?

Connecting multiple lithium batteries into a string of batteries allows us to build a battery bank with the potential to operate at an increased voltage, or with increased capacity and runtime, or both.

Are lithium-ion batteries safe for DIY projects?

Properly configuring lithium-ion batteries in series or parallel is essential for achieving optimal performance and safety in your DIY projects. By following the detailed wiring instructions and safety tips outlined above, you can ensure that your battery pack operates efficiently and reliably.

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.

Should I put a BMS over a lithium battery?

If you are going to series connect Lithium batteries, we recommend putting one BMS over all the Lithium batteries in a series which will control the charge to each battery and ensure all the BMS’s go open circuit at the same time, preventing any single BMS from completely stopping the charging circuit.