No, you should not rely on a Samsung watch charger to charge your phone.
Here's why:
- Battery Capacity Mismatch: The battery capacity of a Samsung smartwatch is significantly smaller than that of a smartphone. According to research, a watch battery is about 1/15th the size of a phone battery.
- Inefficient Charging: Using a watch charger for your phone would be extremely inefficient. You might only get around 10 minutes of charge due to efficiency losses, as stated in the provided reference.
- Low Power Output: Samsung watch chargers are designed to deliver a low amount of power, sufficient only for the small battery in the watch. Trying to charge a phone would result in "trickle charging," which is very slow and impractical.
In summary, while technically you might be able to get a tiny bit of charge into your phone from a Samsung watch charger, it's not a feasible or recommended solution. It's slow, inefficient, and not designed for that purpose.