Charged: Sensor Battery Alerts
B Scott Tech Tools
Low battery alerts for cyclists and runners: Shimano Di2, SRAM AXS, and more.
- Downloads
- 66+
- on Google Play
- Price
- Free
- No in-app purchases
- Updated
- Oct 15
- 2026 · v1.3.6
Screenshots
About Charged: Sensor Battery Alerts
Charged automatically checks your sensor batteries after every ride or run and alerts you when one is running low: heart rate straps, power meters, Shimano Di2 and SRAM AXS electronic shifting, radars, and more. Link your Garmin Connect™ or Intervals.icu account once, and every activity you sync gets scanned for paired sensors that are running low. You get a heads-up before your next workout.
WHAT CHARGED TRACKS
Any sensor battery your watch or head unit records, plus the recorder itself:
• Heart rate straps: Garmin HRM-Pro, Polar H10, Coospo, Magene and more
• Power meters: Favero Assioma, Quarq, Stages, 4iiii, power2max, Rotor
• Electronic shifting: Shimano Di2 and SRAM AXS
• Radars and lights including Garmin Varia and Bontrager Flare RT
• Speed and cadence sensors
• The bike computers and watches you record with
Over 100 models from more than 35 brands, and the list keeps growing.
KEY FEATURES
• Battery dashboard: Every sensor's level at a glance, low devices listed first
• Low-battery alerts: A push notification before your next ride or run
• Quick Scan: Read your Bluetooth sensors directly, anytime you want an instant check
• Battery history: Track how each device drains over time
• Flexible setup: Link Garmin Connect™ or Intervals.icu, upload a FIT file directly, or scan devices directly over Bluetooth
FAST SETUP
Connect once, then ride or run like you always do and let Charged watch your gear in the background. Intervals.icu users will get their most recent readings after linking. Garmin Connect users can enable Historical Data when linking for the same instant reading from recent activities.
STOP GUESSING
A lot of us swap batteries too early, tossing coin cells with plenty of life left. Charged shows the real level on each sensor, so you replace them when they actually need it. Not before.
Made for road and gravel riders, mountain bikers, and runners.
WHAT CHARGED TRACKS
Any sensor battery your watch or head unit records, plus the recorder itself:
• Heart rate straps: Garmin HRM-Pro, Polar H10, Coospo, Magene and more
• Power meters: Favero Assioma, Quarq, Stages, 4iiii, power2max, Rotor
• Electronic shifting: Shimano Di2 and SRAM AXS
• Radars and lights including Garmin Varia and Bontrager Flare RT
• Speed and cadence sensors
• The bike computers and watches you record with
Over 100 models from more than 35 brands, and the list keeps growing.
KEY FEATURES
• Battery dashboard: Every sensor's level at a glance, low devices listed first
• Low-battery alerts: A push notification before your next ride or run
• Quick Scan: Read your Bluetooth sensors directly, anytime you want an instant check
• Battery history: Track how each device drains over time
• Flexible setup: Link Garmin Connect™ or Intervals.icu, upload a FIT file directly, or scan devices directly over Bluetooth
FAST SETUP
Connect once, then ride or run like you always do and let Charged watch your gear in the background. Intervals.icu users will get their most recent readings after linking. Garmin Connect users can enable Historical Data when linking for the same instant reading from recent activities.
STOP GUESSING
A lot of us swap batteries too early, tossing coin cells with plenty of life left. Charged shows the real level on each sensor, so you replace them when they actually need it. Not before.
Made for road and gravel riders, mountain bikers, and runners.
User reviews
Very impressive app! Synching it with my basic components was relatively easy. After the first ride, the app picked up other components and it now tracks my Garmin Edge, Di2, and 4iiii power meter. I still need to synch it with my Wahoo heart rate monitor - will do so before my next ride. 5 stars.
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