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 a direct substitute for LiPo batteries. LiPo packs offer high discharge rates (C-ratings) essential for the quick power bursts needed in RC flying. In contrast, 18650 cells typically have lower continuous discharge ratings, which might limit performance or even damage the cells if overloaded.
If you want to try 18650 cells, follow these steps: 1) Check the discharge current of your motor system and ensure the combined continuous discharge of your 18650 pack meets or exceeds this. 2) Use a proper battery management system (BMS) to balance and protect the cells. 3) Assemble cells in series and parallel carefully to match your voltage and capacity needs. 4) Test the setup cautiously on the ground to monitor heat and voltage under load. 5) Keep the pack secure and well-ventilated during use.
In summary, 18650 cells can work but may reduce performance and require more careful handling compared to LiPo packs designed for RC applications.
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