Yes, it is possible for customers to connect LiFePO4 battery packs in parallel or series. However, there are important considerations to keep in mind to ensure safe and optimal performance: Parallel Connection: Before connecting batteries in parallel, it is crucial to ensure that their voltage and capacity are the same. If they are not identical, it is necessary to charge them at the same rate. Additionally, it is not recommended to connect a used battery with a new one in parallel, as this may reduce the overall capacity of the battery pack. Series Connection: If you intend to connect LiFePO4 battery packs in series, please provide us with the total capacity of the desired pack. This information will enable us to select the appropriate Battery Management System (BMS) for each battery, ensuring proper balancing and protection. Cautionary Note: If you do not have experience or expertise in handling parallel and series connections of batteries, it is advisable not to attempt it on your own. Mishandling the batteries can be dangerous and may also shorten the battery’s cycle life. It is always recommended to seek professional assistance or consult with our technical team to ensure a safe and reliable battery configuration. By following these guidelines, you can safely and effectively connect LiFePO4 battery packs in parallel or series to meet your specific requirements.