Event
Developer seeks help: How can a 3S4P battery provide stable power to a Raspberry Pi 5
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A developer has built a robot consisting of a Raspberry Pi 5, an ESP32, and two RS390 6V motors, powered by a 3S4P battery pack of 12 18650 cells (2200mAh per cell), with a 40A BMS, nominal 11.1V, and 12.6V when fully charged. The core question is: how to provide the Pi 5 with a 5.1V supply that has sufficient current under load—whether to choose a high-current step-down converter or whether there is a better solution—and the developer hopes to receive specific module recommendations. There is no conclusion yet.
Report timeline
- How can a 3S4P battery reliably power a Raspberry Pi 5?
A developer is building a robot consisting of a Raspberry Pi 5, an ESP32, and 2 RS390 6V motors, powered by a 3S4P pack of 12 18650 cells (2,200mAh each), a 40A BMS, nominal 11.1V (12.6V fully charged). The core question is how to provide the Pi 5 with a 5.1V supply that has sufficient current under load: whether to choose a high-current step-down converter or whether there is a better solution, and the developer hopes for specific module recommendations.
Reddit r/robotics ·