Set the timer to 120 seconds

Online timer for 120 seconds

Plug in your phone, set two minutes, then leave it charging while you finish a small job nearby, such as packing your bag or rinsing a coffee cup. The countdown gives you a defined point to return and check whether the battery has reached the percentage you need for the trip home, a train connection or directions across town.

A phone starting on a very low battery may need several countdowns rather than one long, uncertain wait. Each time you return, check the percentage and restart the same interval if it still falls short. These repeated checks suit a quick top-up before leaving a shared office, library or café, especially when you need to keep moving but do not want to forget the phone at the power point.

When you step away from the charging phone, consider who will hear the signal when the interval ends. In a quiet library, workplace or household after others have gone to bed, use vibration or a low volume and keep the phone on a surface where the alert will not rattle loudly. Stay close enough to notice it, since missing one signal can turn a brief top-up into several unnoticed intervals.