USB-C Charging Explained: What the Numbers on the Charger Mean
Volts, amps and watts — and why the charger in your drawer is probably fine (but check the manual).

Chargers list numbers like “5V ⎓ 2A”. Here’s what they mean.
| Term | Meaning |
|---|---|
| Volts (V) | Electrical “pressure” |
| Amps (A) | Current — how much flows |
| Watts (W) | Volts × amps — total power |
The practical bit
Devices draw what they’re designed for. Follow your device manufacturer’s charging guidance, use decent cables and see battery safety basics.





