Question: Can I use Li-ion 18650 cells instead of LiPo in an RC plane?
Answer: While it’s technically possible to use 18650 Li-ion cells in an RC plane, they are not a direct substitute for LiPo batteries. LiPo packs are designed for high discharge rates, which RC planes require for powerful motors and quick bursts of current. 18650 cells usually have lower continuous discharge ratings and can struggle to deliver the necessary current without overheating or voltage sag.
If you want to try 18650 cells, follow these steps: 1) Check the continuous discharge rating (CDR) of your 18650 cells; it should meet or exceed your motor’s current draw. 2) Arrange the cells in series and parallel to match the voltage and capacity of your original LiPo pack. 3) Use a proper battery management system (BMS) for safe charging and discharging, as Li-ion cells are more sensitive to overcharge and deep discharge. 4) Monitor temperature during use to avoid overheating. 5) Test the setup on the ground before flight.
Overall, for best performance and safety, stick with LiPo batteries designed for RC use.
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