Battery Monitor
Real-time battery diagnostics for your laptop
Battery Status
Design Capacity
-- mAh
Original battery capacity
Current Capacity
-- mAh
Current charge level
Full Charge
-- mAh
Maximum charge capacity
Cycle Count
--
Charge/discharge cycles
Voltage
-- V
Current battery voltage
Charge Rate
-- W
Power flow rate
Serial Number
--
Battery identifier
Temperature
-- °C
Battery temperature
Battery API Limited
Some battery information may not be available in your browser. Full diagnostics require Chrome/Edge on a laptop device.
Last updated: -- • Updates automatically
Notice on Accuracy: Due to browser security restrictions and hardware isolation, the battery data displayed may not be 100% accurate. Modern browsers often limit the precision of battery API reporting to protect user privacy. Please use these results for reference only. Download our desktop app to check 100% accurate information.
How Our Deep Scan Works
Look, most battery tests? They check once, maybe twice and call it a day. That's not what we have in mind. Instead, for 20 whole seconds we are anxiously watching your battery with all the vigilance and care imaginable. Ten readings. Every. Single. Second. To put it all into perspective here we've picked 200 separator measurements
So what do we get out of all that trouble? In essence batteries just don't do the same thing from one contraption to machine time. What you're drawing right now, men, which is slow. Two seconds later? Quite another story. Maybe things are running in the background - maybe apps. Possible reasons are the brightness of your screen, whether your WiFi is finding a signal - all told, you'd be hard pressed to find a clear.
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Real-Time Monitoring While testing While it is running, you don't have to wonder what's happening any more. Twice a second right there on your screen you are getting updates. You can literally sit there and do what your battery is doing.
Below is a breakdown:
Current: The current percentage of your battery. That's all there is to it.
Voltage: So think it really like water pressure in a pipe, just except that it is electricity. Healthy batteries spend the great majority of their time in the world above 3.7V and below 4.2V. Temperature: Is your battery becoming hot? This will tell you. Drain Speed: FOR This is the part to keep our eyes on. It reveals perceivably the number of percentage points per hour that are getting away.
Alright so we've got our 200 ratings. Now we chop 'em up into 10 different chunks and examine it one by one. What matters here? Consistency. Predictable or All Over the Map Battery?
Draining out at an agreeable but steady rate? Beautiful. That's what you want. That's a healthy battery doing what healthy batteries do.
Jumping around like crazy - fast one second and slow the next and fast again? Yeah, that's not great. Usually means something's up.
Huge swings in comparing different time periods? Your battery is getting old probably It's struggling with maintaining things in place.
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You start at 100. Then we begin deducting points based on things that we found:
Fast drainage: More than 15% an hour drop? Ouch. We're taking up to 30 points off. How much is down to just how bad it is.
All over the place: Drain rate jumping crazy? That'll cost you up to 20 points. Good batteries don't do that.
Running on fumes: Under 20%? And that actually does stress your battery out. Automatic 10 point penalty if caught doing it there by us.
Whatever you've got left - that is your score.
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Your battery's doing great!
Totally normal, a thing to be alarmed about
Keep an eye on it
Your battery's getting old
Chances are good time to get a new battery
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Discharge Rate
How many percentage points that are you losing every hour. Somewhere between 1% and 5%? Nice, you're good. Seeing 10% to 15%? Bet you have apps doing affected things in back. Higher? What your phone is doing: The Hard Hats Your phone is working hard on something this very moment.
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Time to Empty
This is based upon your current rate or drain rate. But listen - the second to opening a game or streaming something this number's gonna change. If you stay doing exactly what you are doing right now, it's only cutting you some 2 how long you've got.
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Samples Collected
More is better - always. It is akin to checking on the weather. Look at the temperature once? Could be anything. Check 200 times? The thing about it is you've got a real idea of what's happening now instead of having some random spike.
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Things to Keep in Mind
Unplug first. We're testing drain, and not how it charges.
Everything affects results. Screen brightness, Apps doing stuff, WiFi searching, cell signal - pretty much everything I promise you.
Run it a couple of times subjecting it to different charge levels. One test is not going to tell you the whole story.
And then we're reading right out of your sensors. If you have cheap hardware you may get with readings that are off.
Understanding Battery Life
Everything's battery powered now, anyway. Phone, laptop, tablet, ear-buds, watch. All of it. And everybody's asking the same stuff. How do I make it last longer? Can I charge overnight? What's the RIGHT way to charge?
You know what? There's so much BS advice flying about it's impossible to know what's real and what isn't. Let's fix that.
🔄 What Are Battery Cycles?
Super simple. One cycle = are the use of 100% of your battery. Full to emptiness and back to full once again. That's it.
Well, here's a tip you should know about; once every month let your device actually die. Like, completely dead. Powers itself off. Then plug that in and charge that up to 100%. Know why? This recalibrates the meter. Crunching the amount of time you have (issues noise, etc.).-Tells your phone how much battery it's actually got. Skip this and eventually your battery indicator just goes off. Gets worse over time too.
⚡ Modern Battery Technology
Almost everything these days is powered by lithium-ion or a lithium-polymer battery. They're actually pretty smart - way smarter than people realize. Built in protections, safety features the whole deal.
Biggest myth ever? Overcharging. You literally can't oversupply a contemporary battery. Can't be done. When you get to 100% your charging circuit automatically turns off. Battery garbage accepting power. That's why having your phone plugged me all night is totally ok. Zero damage.
Leave it plugged in for a week if you are interested in it. Seriously. Once it's at 100%, it just... sits there. Drops to 99%? It'll charge back to 100%. That's all that happens.
🔥 Heat and Battery Degradation of a Battery
Wanna know what nobody tells you? Heat destroys batteries. Way and away faster than anything has to do with charging. Overcharging isn't real. Leaving it plugged in? Fine. Heat though? That'll wreck your battery.
Play games? Edit videos? Run heavy stuff? Your CPU and GPU get HOT. And guess what's sitting right there sitting in the same case? Your battery. Simply baking with all that stuff. That prolonged exposure to the oppression of heat? THAT's what kills the chemistry inside and drains the battery life from you.
Got a removable battery? Take it out when you are doing heavy stuffs when plugged. Seriously pop it out. Can't remove it? Then you gotta be able to focus on the air flowing. Hard surfaces only. Keep those vents clear. Of course, maybe get a cooling pad if you do this load.
📊 What the Research Shows
The study after study say the same thing. More heat = faster the degradation. Period. Heat makes all those chemical reactions inside the battery cells happen more quickly which breaks everything down quickly. This isn't up for debate. It's just physics.
Stuck with Non Removable Battery? Then handling temperature is literally all you can do. Hard surfaces. Always. Beds and couches? They block your vents. Do a lot of demanding work? Cooling pad. Get one. They work. Oh and dust the crud out of those vents every so on. Dust simply does not let all that heat out.
💯 Bringing the Charging Sweet Spot
So labs have tested this. Charge to 100% all the time? You'll get maybe 300 to 500 cycles and then things start to really start declining. Which is actually not terrible that bad. But you can do better.
Sweet spot's between 20% and 80%. Batteries hate extremes. Keep the amount of yours in that middle zone and you are putting way less stress on the cells. More cycles total. Holds capacity longer. Just works better.
✅ Tips on Taking Care of Your Battery
Stop Stressing about Leaving it Plugged in - Seriously. Can't overload the modern batteries. Impossible. Quit worrying.
Heat's what you should worry about - Temperature is of the essence 10x more than your charging habits i.e. That's where you should have your focus.
Zero to 100% Zero to 100% Do a full cycle monthly - once a month. Remains Honest With That Battery Meter.
Pop out that battery for heavy stuff (if you can) - Gaming or rendering while plugged in? If this battery comes out, get rid of it. Protects it from heat.
Try to stay 20-80% - Won't always work out, but when you are able to pull it off your battery will thank your for it.
Airflow, airflow, airflow - Hard surfaces. Clear vents. Good ventilation. Heat's the enemy here.