device
What is my battery level online
See your laptop or phone battery level in real time.
Battery data is read locally in your browser. Nothing is sent to our servers.
Solutions that can help in your case
Other tools
Device Info
Overview: battery, network, and hardware — with links to specialized tools.
Display & System
Resolution, viewport, OS, language, timezone, and theme — read in your browser.
Connection Type
Find out if you're on 4G, 5G, Wi-Fi, or a slow connection.
RAM & Cores
How many CPU cores and how much RAM your device has.
How battery level works in the browser
We use the browser Battery Status API: level (0–1), charging state, and estimated time to empty/full when the OS exposes it.
Everything is read locally on your device. Nothing is sent to our servers to “compute” battery. On iOS/Safari the API is usually missing; on plain HTTP or privacy browsers (e.g. Brave) battery may be unavailable — and we say so clearly instead of faking a percentage.
How to use it
Open: Prefer Chrome or Edge on HTTPS when possible.
Read: Check percentage and charging state in the panel.
Monitor: Values update when the OS reports changes.
Does your battery die in the middle of the day?
Phones and laptops that drain early disrupt work, study, and travel. Many people come just to see the percentage — and learn the real issue is brightness, weak 5G, background apps, or an aging battery.
Live level helps you decide: charge now, dim the screen, or grab a power bank before the next meeting. The tool stays simple on purpose: result above the fold, no account.
Tips to save charge and extend lifespan
- Lower brightness; use dark theme on OLED when it helps.
- Turn off Bluetooth, GPS, and hotspot when idle.
- Avoid heat: charging in the sun or gaming on your lap accelerates wear.
- Prefer partial cycles; living at 0% or 100% all the time ages many modern cells faster.
- Audit background drain; on Android, check per-app battery usage.
- On laptops, use balanced power plans instead of full performance all day on AC if you do not need it.
- Quality GaN chargers cut time on the wall and avoid cheap hot bricks.
- A good power bank saves travel days and long commutes.
Why batteries drain fast
Display is the top consumer, then cellular radio on weak signal, radios scanning, and background work. Heat makes systems spend more or throttle unpredictably.
On laptops, video tabs and heavy extensions add up. If percentage falls quickly under light use, check apps and OS battery health.
Lifespan: 20–80% and heat
Many vendors suggest avoiding prolonged extremes. Charging to ~80% for daily use and hitting 100% only before long trips is a common habit for cycle longevity.
Heat is the enemy: thick cases + gaming + cheap fast charge raise temperature. Prefer reputable chargers and ventilated surfaces.
When a power bank or new charger helps
If you live between meetings and transit, a reliable power bank removes 10% anxiety. GaN chargers are smaller and efficient for multi-device kits.
Accessories do not fix a worn internal cell: if the OS reports poor health, battery service or a device upgrade may be the real fix.
Privacy and API limits
Reading is local. We do not use battery level to track you. When the API is missing, we explain why instead of showing a fake value.
Prefer HTTPS and a compatible browser (Chrome/Edge on Android usually work better than Safari on iPhone).
When accessories make sense
If percentage hits empty at the worst time of day, quality power banks and fast chargers fix the immediate pain while you adjust habits. Prefer safety-certified products with realistic capacity for your devices.