Quick answer
A good battery widget gives the remaining charge at a glance. Start with a large percentage and use a bar or ring only if it genuinely makes the value easier to interpret.
Decide how much battery information you need
A percentage is usually enough for a quick check. Pair a clear number with a horizontal bar or ring, not both unless the layout is large. Reserve enough width for 100% and avoid using red at every level; save warning colors for genuinely low battery if the component supports thresholds.
A label such as “Phone battery” helps when the screen includes multiple battery sources. Do not present external earbuds or watches as connected unless the chosen data source actually exposes them.
Try it on your home screen
- Choose a size that leaves enough space around a two- or three-digit percentage.
- Put the number first and make the bar or ring visually secondary.
- Preview nearly empty and nearly full states, not only a convenient 70% example.
- Confirm that the value is linked to the device battery source instead of typed into a text element.
Make the reading visible in different themes
On a dark widget, use a pale value and a track slightly lighter than the background. On a light widget, use dark digits with one accent. You can make the fill more expressive, but the number should still carry meaning if someone cannot distinguish the colors.
Know what is live
A static text element with “82%” is only a design example. A battery-connected component needs access to current device state and a supported refresh path. How quickly it changes depends on the widget implementation, Android behavior and system power settings. Avoid promising a constant real-time update from a home-screen widget.
Try the layout at both a high level and a low level. A bar with a 5% fill may be barely visible even when the numeric value is clear. If the displayed value seems frozen, go to widget refresh troubleshooting instead of immediately rebuilding the design.
Check the result
Do not rely on color alone to signal low charge; retain the number so the widget remains understandable with different color perception or display settings. Earbud and phone battery readings come from different sources, and some accessories may not expose their percentage.
Common question: Will a drawn progress bar update when my phone charges?
Not without a data connection. A static fill percentage stays fixed until the widget's supported data source updates it.