BatteryMeter

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!