[ GLOSSARY DEFINITION ]
Battery
40W charging
A 40 W wired charging rate — enough to refill a phone to a large share of its capacity in about half an hour.
Full Definition & Technical Explanation
40 W wired charging is a power-delivery rate enough to refill a phone to a large share of its capacity in about half an hour. Actual speed depends on the charger, cable, and the device's own charging curve, which slows as the battery fills.
See charging wattage and charging speed.
Where 40W charging Matters
Smartphones
Laptops
Frequently Asked Questions
What is 40W charging?
A 40 W wired charging rate — enough to refill a phone to a large share of its capacity in about half an hour.