Battery Notifier BT Free (For Android 9 and under)


Green, blue, orange and red status bar numbers can be customized to display at the percentages you want. Optional yellow smiley face charging icons. Low & full battery notifications.

IMPORTANT: Many new Android devices have aggressive battery saving settings which will shut down apps running in the background by default unless you make changes to your settings.
The worst offenders are Samsung, OnePlus, Huawei and Xiaomi.
See: if our app is shutting down randomly for no reason.

For other problems try try: or e-mail us at

NOTICE: BT does NOT stand for Bluetooth and this app has nothing whatsoever to do with Bluetooth

NOTICE: Battery Notifier BT Free is NOT 100% compatible with Android 10. If you have Android 10 or higher, and you still want colored numbers in the status bar, the original Battery Notifier BT Free MAY or may not work on your device. See Battery Notifier News "Will original Battery Notifier work on Android 10 and up?" at

If your device has Android 10 or up, Battery Notifier BT Free 2020 is optimized for those devices. It includes white only notifications in the status bar as required by Google going forward.

MALWARE NOTICE: Google Play is the only place authorized to carry our apps. If you installed an apk from some other site, it might have malware. If you think you might have installed an apk with malware, uninstall it immediately and run a virus program on your device.

Features in Battery Notifier BT Free (For Android 9 and under)...
* Arial font in official Android colors (optional black background)
* Original green color option (transparent icon only)
* Only three permissions and no ads!
* Low and Full battery alarms with repeat intervals
* Mute alerts (Postpone alarms)
* Battery temp (C or F), health, and "plugged/unplugged since" info in dashboard
* Charging icons - Smiley or battery level
* Full charge icons - Smiley with sunglasses or battery
* Display colors you want at the levels you want

Battery Notifier BT Free is one of the lightest apps available with a battery level indicator in the status bar that puts the least possible strain on your battery.

Posts at
Will original Battery Notifier work on Android 10 and up?
Inaccurate Battery Readings / No Full Battery Alarm
Managing notifications in Battery Notifier Pro BT 2020
Help! I Can't Uninstall Your App!
Most Frequently Asked Questions
Some Free Apps Aren't Free

If you like Battery Notifier BT Free, please consider supporting the developers by purchasing Battery Notifier Pro BT.

Battery Notifier Pro BT (For Android 9 and under) has...
* Numerous custom colored status bar numbers to easily monitor battery levels
* Roboto HD and bright ArialXL-b HD fonts with optional black background included
* Battery alarm notifications with features and options not found in other apps
* Privacy concerns? Only three permissions and no ads!
* Many FREE HD add-on themes, many with brighter add-on numbers

Features only in Battery Notifier Pro BT (For Android 9 and under)...
* HD add-on themes including Percent HD add-ons with the percent sign
* Neon HD add-ons - All fuchsia, all purple, all yellow, all orange, all red from 100 to zero
* Animated charging icons

More features only in Battery Notifier Pro BT (For Android 9 and under)....
* Charger connection and disconnection alerts
* Wireless charger support
* Notification Priority option
(Change position of status bar icon (left/right) and notification in drawer (higher/lower)

In Battery Notifier Pro BT (For Android 9 and under)....
* Custom full charge alarm percentage (70% to 100%)
* Play sound notifications in a loop
* Quiet hours (Mute alarms at certain hours)
* Various vibration lengths
* Repeat notifications as often as every 2 minutes
Read more
23,135 total

What's New

Added Send Feedback option with new support email address
Read more

Additional Information

June 7, 2017
Current Version
Requires Android
1.6 and up
Content Rating
Offered By
4650 W. Oakey Blvd. Apt 2203 Las Vegas, NV 89102
©2021 GoogleSite Terms of ServicePrivacyDevelopersAbout Google|Location: United StatesLanguage: English
By purchasing this item, you are transacting with Google Payments and agreeing to the Google Payments Terms of Service and Privacy Notice.