Ampere Alarm - Battery Alarm

⚡ Ampere Alarm is a full charge alarm and battery monitor for your phone, earbuds and smartwatch. Set a charge limit alarm at 80% or any level, get low battery and temperature alerts, and track battery health 24/7.

Charging to 100% and running hot wear your battery out faster. Ampere Alarm rings the moment your phone reaches your charge limit, so you unplug on time and your battery lasts longer. 🔋

⏰ FULL CHARGE ALARM & CHARGE LIMIT ALERTS
• Full battery alarm at 80%, 90%, 100% or any level you choose
• Low battery alarm so you never run out
• Battery temperature alarm, high or low, to stop overheating
• Battery voltage alarm for advanced users
• Spoken alerts that read the alarm out loud
• Your own sounds, volume, vibration patterns and alarm length
• Full-screen alarm that wakes your lock screen
• Built-in alarm test and phone-specific steps so alarms ring on Samsung, Xiaomi, OnePlus and more
• Quick Settings tiles: battery at a glance, mute alarms for an hour, charger test

🔌 STOP CHARGING AUTOMATICALLY WITH A SMART PLUG
• Pair a TP-Link Kasa, Govee or webhook smart plug
• Charging stops automatically when your battery reaches your charge limit, even on phones without a built-in limit
• Full by wake-up: charge overnight and reach your limit just before your morning alarm
• Turn charging back on at low battery
• Works with Smart Life, Tuya, Meross and Wemo through IFTTT
• Smart plug home-screen widget

📊 24/7 BATTERY MONITOR & BATTERY HEALTH
• Live charging current (mA), voltage, temperature and wattage
• Your battery's real capacity, not just the factory rating
• Battery health and charge cycle tracking
• Deep sleep and screen-off drain tracking, with alerts for unusual drain
• Time-to-full and time-remaining estimates in clock time
• Charging history with daily stats, session charts and a weekly digest
• Achievements that reward healthy charging habits
• Back up and export your battery history
• Optional charger plug and unplug sounds

🛠️ BATTERY TOOLS
• Charger speed test: find out if your cable or charger is slow
• Temperature watch and cool-down helper
• Standby drain, screen vs standby, wired vs wireless
• Drain benchmark, calibration guide and a full battery report

🎧 BLUETOOTH DEVICE BATTERY
• Battery level of your earbuds, headphones, smartwatch and accessories
• Battery history graphs for each device

📱 LINKED DEVICES
• Watch the battery of your other phones and tablets
• Get an alarm here when another device is full, low or hot

✨ CHARGING ANIMATIONS & ALWAYS-ON DISPLAY
• Charging animations with AMOLED glow styles
• Always-On Display screensaver: bedside clock and battery

📱 WIDGETS & NOTIFICATIONS
• 6 home-screen widgets: battery level, temperature, cycles, battery graph, Bluetooth devices and smart plug
• Status-bar battery %, temperature, current, power or network speed
• Silent hours, app usage insights and data usage

🎨 DESIGN
• Material You colors and a true-black AMOLED dark mode
• Layouts for phones, tablets, foldables and landscape
• Celsius or Fahrenheit
• 18 languages 🌍

💎 PREMIUM
• Premium: one-time purchase. Removes ads and unlocks every charging animation, AOD style, custom alarm and smart plug feature.
• Linked Devices Service: subscription. Everything in Premium, plus remote alarms for your linked devices.
• Core alarms and monitoring stay free.

🔒 PRIVACY
Battery history stays on your device. Only Linked Devices sync, which you turn on yourself, sends battery readings to your other devices. Ampere Alarm asks for permissions only when you use the feature that needs them.

Keeping your charge between 20% and 80% reduces battery wear. Plug in, set your charge limit alarm, and unplug at the right moment, or let a smart plug do it for you. ⚡

Recent changes:
• New: Spoken alerts. Alarms can read out the battery level in a voice you choose
• New: Refreshed app icon and launch animation
• Improved: More accurate charging current readings on some phones
• Fixed: Links that didn't open on some phones
• Fixed: Rare crashes when closing the charge screen and right after an app update