BatteryMeter is a comprehensive battery monitoring app that provides real-time information about your device's battery health and charging performance.

⚡ FEATURES

Battery Monitoring
• Real-time battery level tracking
• Charging/discharging status with visual indicators
• Current draw measurement (milliamps)
• Battery voltage monitoring
• Power consumption in Watts
• Battery capacity tracking (mAh)
• Temperature monitoring in Celsius

Charging Rate Analysis
• Measures charging speed in mAh/min based on actual charge changes
• Tracks last 3 charge measurements for accurate rate calculation
• Shows positive rate when gaining charge, negative when losing
• Color-coded: green for charging, red for discharging

Smart Time Estimates
• Estimated time until full when charging
• Estimated time until empty when discharging
• Based on measured charging rate, not instantaneous current
• Updates automatically as charging conditions change

Intelligent Power Management
• Charging type detection (AC/USB/Wireless)
• Stops all background activity when app is not visible
• Remeasures everything fresh when reopened
• Zero battery drain when not in use

🎨 DESIGN

• Clean, modern Material Design 3 interface
• Dark theme support
• Color-coded metrics for easy reading

🔒 PRIVACY-FOCUSED

• No data collection
• No internet permission required
• No advertisements
• No tracking or analytics
• Completely offline
• Open source code available

✨ PERFECT FOR

• Monitoring battery health over time
• Tracking charging performance
• Identifying battery drain issues
• Checking if fast charging is working properly
• Verifying charger output
• Comparing charging speeds between chargers

📊 ACCURATE DATA

BatteryMeter provides accurate, real-time data directly from your device's battery management system. Charging rate is calculated from actual charge level changes over time, giving you a realistic picture of how fast your battery is charging or draining.

🔋 DETAILED METRICS

• Level: Current battery percentage
• Status: Charging, Discharging, Full, or Not Charging
• Charging Rate: Measured speed in mAh/min from real charge changes
• Current: Real-time current draw in milliamps (mA)
• Voltage: Battery voltage in volts (V)
• Power: Calculated power consumption in watts (W)
• Capacity: Total battery capacity in milliamp-hours (mAh)
• Temperature: Battery temperature to detect overheating
• Time Estimate: Based on measured charging rate until full or empty

⚙️ TECHNICAL DETAILS

• Minimum Android version: 5.0 (API 21)
• Target Android version: 15 (API 35)
• Size: Under 5 MB
• Permissions required: None
• Internet required: No

💡 WHY BATTERYMETER?

Unlike other battery apps that are bloated with ads, unnecessary permissions, and questionable privacy practices, BatteryMeter is lightweight, privacy-respecting, and focused solely on providing you with accurate battery information.

The app runs entirely on your device - no data ever leaves your phone. No accounts, no login, no tracking. Just pure battery monitoring. When you leave the app, it stops completely - zero background activity.

🆓 COMPLETELY FREE

BatteryMeter is completely free with no ads, no in-app purchases, and no premium features locked behind paywalls. What you see is what you get - a professional battery monitoring tool available to everyone.

📱 WORKS ON ALL DEVICES

BatteryMeter is optimized to work on all Android devices from Android 5.0 and up, including phones and tablets. Whether you have a flagship device or a budget phone, BatteryMeter will help you monitor your battery health.

Download BatteryMeter today and take control of your battery health!