iPhone Battery Health at 80%: How Long Can You Keep Using It?

A smartphone connected to a compact power bank beside a small canvas bag.

Your iPhone still gets through most days. For a longer outing, you bring a power bank. Then you notice that Maximum Capacity has reached 80%, and an arrangement that seemed perfectly workable starts to feel like borrowed time. You can keep using an iPhone with battery health at 80% if its runtime and reliability still … Read more

Cordless Vacuum Batteries: What to Check Before Replacing One or Buying Again

A woman holds a cordless stick vacuum beside a spare battery in a charging cradle.

A replacement battery can be a sensible way to keep a cordless vacuum you like. It can also be an expensive way to discover that the battery wasn’t the problem—or that a fresh one still won’t finish the cleaning job you bought the vacuum for. Before spending more, separate three questions: Has the runtime changed? … Read more