Question When should I replace the battery in my laptop?

[Rodion15]

How can I determine the battery health in a laptop?

There are apps like batteryinfoview that tell you the battery health, but it doesn't tell you what's good or bad (something like "replace if 80% or less" or similar).

Please correct me if I'm wrong: the battery health can be worked out by running the command batterycfg /batteryreport and dividing Full Charge Capacity / Design capacity. ...but, what value is the minimum for a reasonable battery health?

I googled for this and got disparate results, for example, I read that batteries in Mac laptops should be replaced if health is under 80%. While for Windows laptops, the battery should be replaced if less than 40%.

Any insights much appreciated

 

[helpstar]

don´t worry that much, if the battery is dead or in a state that it´s not usable for you anymore (like 5 minutes on battery then off), replace it

 

[geofelt]

The laptop software should have an app that can report on battery health.
As to when to replace, plan on such a replacement when you notice that your run time is getting shorter.

 

[Rodion15]

Thanks, that makes sense guys.