Battery Guardian

Battery alerts, cycle tracking & health trends Android never shows you. Free.

Android tells you your battery level. Battery Guardian tells you why it's draining, when it's at risk, and how to make it last years longer.
Unlike Android's built-in tools, Battery Guardian tracks your battery across every charge cycle — showing exactly how much drains on-screen, off-screen, and during deep sleep. You'll see patterns Android never shows you, and get alerted before problems become damage.
What makes it different:
🔔 Smart Alerts — Get notified when your battery overheats, drains too fast, or hits unsafe levels. Android has no equivalent. Set thresholds once, stay protected always.
📊 Cycle-by-Cycle History — See how each discharge cycle compares. Spot abnormal drain, identify problem nights, and track whether your battery health is declining over time.
🔋 Battery Health Trends — Android shows a single health number. Battery Guardian shows how that number is changing — so you can act before capacity is gone.
⚡ Real-Time Charge Meter — Watch power consumption live with charts, not just a static percentage.
📱 App Power Breakdown — See which apps are quietly draining your battery and take action.
🛠️ 36 System-Level Tips — Not generic advice. These are real Android settings, most users never find, that measurably extend your charge. Each tip shows its impact before you apply it.
How it works:
Install Battery Guardian (under 5MB), grant battery access, and you're done. No account needed, no data collected, no ads in your face. Set your alerts, check your cycle history, apply the tips that matter to you.
Battery Guardian is free. No forced ads. No unnecessary permissions. Just clear battery intelligence Android should have built in — but didn't.
📲 Install Battery Guardian and stop guessing what's killing your battery.