I salvaged a large batch of 18650 cells from old laptop batteries and needed a way to figure out which ones were still worth ...

Are you worried that your battery is starting to die and may need to be replaced? Are you looking for a used laptop and want to make sure that the battery is in reasonable condition before you buy?

Is your Windows laptop battery not lasting as long as it used to on a single charge? High screen brightness, incorrect power settings, and too many applications running in the background are a few of ...