Battery Health Check — Test your phone battery in seconds
Run a complete battery health check online: check charge level, charging status, and estimated battery health. Works on iPhone, Android, and all modern devices — no app to install.
Check your phone battery health
View your current battery level, charging status, and estimated health score. The tool reads real-time data from your device.
Live Device Readout
Real-time terminal output and hardware diagnostic preview.
How to check your phone battery health
Follow these simple steps to run a complete battery health check and understand each result.
Open the test
Tap "Check Battery" to start the test. The tool will read your device's battery data.
View battery level
Check your current battery percentage. The battery icon fills up to show your charge level.
Check charging status
See if your phone is currently charging. The status will show "Charging" or "Not charging".
Review health score
The health score estimates your battery's condition. Higher scores mean better battery health.
📱 iPhone battery health
Works on all iPhones via Safari. Provides battery level and estimated health based on available data.
🤖 Android battery test
Compatible with Chrome and Samsung Internet. Reads battery data using the Battery Status API.
🔋 Check multiple times
Battery health estimates improve with multiple readings. Check at different charge levels for accuracy.
⚡ Test while charging
Testing while charging can help identify if your battery holds charge properly.
Why run a battery health check?
Your phone battery degrades over time. A quick check helps you know when it's time for a replacement.
Before buying used
Check the battery health on a used phone before you pay. A low health score means you may need a replacement soon.
Monitor degradation
Track your battery health over time to know when it's time for a replacement.
Selling your phone
Share a clean battery health score to build trust with potential buyers.
Warranty claims
Document battery health issues before filing a warranty claim.
Software vs hardware
Is your phone dying quickly or is it a software issue? The test helps you isolate the problem.
Peace of mind
Know your battery health so you can plan for replacement before it fails.
Frequently asked questions about battery health
A battery health check tests your phone's battery by reading current charge level, charging status, and estimating overall battery health based on available data and discharge patterns.
Open this page and tap "Check Battery". The tool will read your current battery level, charging status, and provide an estimated health score based on your battery's performance.
Yes. The tool works on iPhone, iPad, and iPod touch through Safari. It reads battery data using the Battery Status API and provides health estimates.
Yes. The battery health check is completely free, with no signup, no ads, and no data collected.
Look for the battery percentage, charging status, and estimated health score. A health score above 80% generally indicates a healthy battery. Lower scores may indicate aging or wear.
A battery health score above 80% is generally considered good. Between 60-80% indicates the battery is aging and may need replacement soon. Below 60% means the battery is significantly degraded.
The health estimate is based on available battery data and provides a good indication of your battery's condition. For the most accurate reading, test multiple times at different charge levels.
If your battery health is low, consider getting a battery replacement from a certified technician. You may also experience shorter battery life and unexpected shutdowns.
Ready to check your phone battery health?
It takes less than a second. No app to install — just tap and get your battery status.