Fast charging has become one of the most-compared numbers on a smartphone spec sheet, and the wattage keeps climbing every year. But the number on the box doesn't always tell you what you actually want to know: how long you'll be stuck near a plug.
Roughly what the numbers mean in practice
As a rough guide: 45W chargers typically take a phone from empty to full in under an hour; 65–90W chargers usually manage it in 30–40 minutes; and 120W+ chargers, on phones built to support them, can get close to a full charge in under 20 minutes. Actual times vary by battery size and the phone's own charging curve, so treat these as ballpark figures, not promises.
Why battery chemistry matters as much as wattage
2026's shift toward silicon-carbon battery designs is letting phones pack more capacity into the same size while charging faster without excessive heat. That means two phones with the same wattage rating on paper can still charge at noticeably different real-world speeds.
Does chasing the highest wattage actually matter for you?
If you top up through the day rather than running the battery to empty, the difference between 45W and 120W is mostly measured in minutes you'll rarely notice. It matters far more if you regularly charge from near-zero in a hurry — before heading out, or during a short break.
What's actually in Mobsmart's range
Several phones we carry, including the Motorola Edge 70 Pro's 90W charging, ship well above the old 18–25W standard most budget phones used a few years back. Worth asking us about the exact wattage for whichever model you're considering.
One habit that matters more than the wattage number
Whatever speed your phone supports, avoid leaving it sitting at 100% on the charger for hours after it's finished, and avoid routinely draining it to 0% — both age a battery faster than the charging speed itself ever will.