# How to check your Chromebook's battery health
Here's how to make sure your Chromebook is in top shape
[](https://wiki.towne.org/uploads/images/gallery/2023-10/image.png)
## How to check your Chromebook's battery health
1\. **Hit Ctrl + Alt + t to open the Crosh.**
2\. **Type 'battery test' and hit Enter.**
[](https://wiki.towne.org/uploads/images/gallery/2023-10/DLLimage.png)
3\. **Here's your battery's health, measured in a percentage out of 100 percentage**
[](https://wiki.towne.org/uploads/images/gallery/2023-10/WSGimage.png)
You can get a speculative battery life estimate (based on whatever action you're doing on the Chromebook) with that result. For example, I plugged 0.69, the result I got, into the following equation:
((100/0.69)\*5)/60=
And got 12.07 hours of battery life. That being said, this test doesn't take actual system use into account.
5\. **Type 'battery\_firmware info" into the Crosh and hit Enter.**
6\. **Here you'll see the maximum battery capacity (Design capacity), how of that capacity your battery hit at its last full charge, and how many battery cycles you've gone through.**
So, if my Battery Health is at 96.86 percent, that means I've used 3.14 percent of its total life in those 25 cycles. Then, (96.86/3.14) = (X/25), where X = the amount of cycles it will take to deplete the rest of the battery's health. A simple bit of division and multiplication gets you the answer of approximately 771 cycles being left in your battery, with a total of 796 charges.
But I wouldn't want to rely on long life from a laptop battery once it reaches 400 or more charges.
Congrats, now you're a lot more informed about your Chromebook's battery life!