How do I check my laptop battery's health?

I tried googling it, I tried to run the cmd, but nothing is showing up as described in the websites I'm looking at!!!
If someone can walk me through it, that'll be really great!

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SW-User

how long does it last after you unplug it from the charger?

hiddenkitty · 26-30, F

2 hours, but right now, I see I've used it for less than an hour, and I'm already at 50%. The laptop and battery are 4 years old

SW-User

@hiddenkitty: did it last much longer previously?

hiddenkitty · 26-30, F

Yes, it used to be 3 hours or so. I really can't remember what the battery life was like when I first got it.

SW-User

@hiddenkitty: sounds like it's going out; it'll be time for a new one soon or limp along for a while till it's time for a whole computer.

hiddenkitty · 26-30, F

Computers can be so expensive. I want to make it last aslong as possible, especially since my phone is also showing signs of aging. But I do plan buy a replacement battery at the very least