Can You Use 18650 Li-ion Cells Instead of LiPo Batteries in RC Planes?

Question: Can I use Li-ion 18650 cells instead of LiPo in an RC plane?

Answer: While 18650 Li-ion cells can technically power an RC plane, they are generally not the best choice compared to LiPo batteries. LiPo packs are designed to deliver high current bursts required by motors, whereas 18650 cells usually have lower discharge rates and are heavier for the same capacity. If you still want to try 18650 cells, follow these steps: 1) Use high-drain 18650 cells rated for continuous discharge above 10A. 2) Connect the cells in series and parallel to match your plane’s voltage and capacity needs, ensuring proper balancing. 3) Use a suitable battery management system (BMS) to protect against overcharge, over-discharge, and short circuits. 4) Check the total weight; heavier packs can affect flight performance and handling. 5) Test the setup on the ground first to ensure the current draw does not exceed the cells’ limits. Overall, for reliable performance, stick to LiPo batteries specifically designed for RC applications.