HP is working on a worldwide recall of laptop batteries for the usual reason: they might overheat and catch fire.
The batteries shipped with a bunch of different HP and Compaq-branded models sold between March of 2013 and August of 2015, including HP ENVY, Compaq Presario and HP Pavilion. Batteries sold as spares or replacements are also included in the recall.
Since there are a lot of different barcode numbers covered by the recall, HP has posted software to check whether a unit has an at-risk battery, here.
The same page has an online form to check serial number, barcode number, and country. ®