Charger Green Light
A red light indicates charging is in progress, while a green light means it is fully charged.
However, recently, even when the vehicle was out of power, the charger would switch to the green light and stop charging after just a few minutes.
Online sources suggest various possibilities: the battery might be failing (swollen or too old to hold a charge), the charger itself could be broken, or there might be a poor connection at the charging port.
Since it is hard to pinpoint the exact cause, I touched the charger and found it extremely hot—around 90°C—whereas the normal operating temperature is 55°C. I decided to place the charger on an extra cooling base. This time, it charged for an additional hour, and the vehicle reached a near-full charge. It seems the charger was stopping automatically when it overheated to prevent a fire hazard.
I recommend buying a spare, inexpensive charger so you can swap it out immediately if the original fails; keep one in the vehicle for charging on the go and another at home.
Flat Tire
The rear tire felt low on air whenever I rode it, and there was a distinct “swishing” sound while moving.
When a friend sat on the bike, it was obvious that the tire was flattened under the weight.
So, I used the cheap manual pump I had bought earlier to inflate it.
Although I would prefer an electric pump, I haven’t bought one yet because they are too expensive—a manual pump costs only $2, whereas an electric one is $30.
Temperature Monitoring
Temperature monitoring is crucial during the summer; many computers, development boards, and chargers can reach temperatures of 90°C or higher, posing a significant fire risk.
I learned via AI that the DHT11 sensor is suitable only for ambient air temperature and not for measuring the temperature of specific objects. The MLX90614 module, however, is well-suited for infrared-based object temperature sensing.
If you are interested, you might want to try the MLX90614.
You can combine it with an ESP32 and Home Assistant to monitor the temperatures of critical devices or components.
