I recently faced a common issue with motorcycle batteries, especially during the winter months. The battery would discharge over time, leaving the motorcycle inoperable. After some research and experimentation, I found a reliable solution using a Shelly Plug S and Node-RED. Here’s how I optimized the charging process:
Problem Background
- The motorcycle’s battery would discharge over time, making it difficult to start the vehicle.
- A traditional charger left continuously connected didn’t prevent the battery from dying.
Solution Overview
- Replaced a basic toggle switch with a Shelly Plug S to monitor and control the charging process.
- Set up a Node-RED flow to automate the charging cycle, ensuring the battery remains healthy without overcharging.
Implementation Details
- Hardware Used: Shelly Plug S, compatible battery charger, and a standard motorcycle battery.
- Software Tools: Node-RED for automation, utilizing a scheduler node for weekly charging cycles.
- Process Flow:
- The charger is automatically turned on once a week for a short duration.
- The system monitors the current drawn by the charger. If the current is above 10W, it waits for stabilization.
- Once the current drops below 10W, indicating the battery is charged, the system turns off the charger.
Key Benefits
- Energy Efficiency: The charger only operates when necessary, preventing energy waste.
- Battery Health: Regular, controlled charging cycles extend the battery’s lifespan.
- Convenience: No manual intervention is required, freeing up time and reducing maintenance hassle.
Conclusion
This setup has been a game-changer for maintaining my motorcycle’s battery health. It’s a simple yet effective solution that leverages smart home technology to address a practical issue. I highly recommend exploring similar automation projects for other household or automotive maintenance tasks!
Happy tinkering! 
