Just to put a footnote on this ...
HP has just announced a worldwide recall of various laptops. The update will replace batteries and alter the BIOS. Reason: " These batteries have the potential to overheat, posing a fire and burn hazard to customers. For this reason, it is extremely important to check whether your battery is affected."
To see whether your computer is affected, if you have a HP laptop:
https://batteryprogram687.ext.hp.com...ProgramSummary
This is a multi-language advisory from HP that lets one pick a different language than English for those who aren't native speakers.
Servus,