Bose have issued an urgent recall of their popular Bose S1 Pro and Bose S1 Pro + battery packs. The recalled lithium-ion battery packs can overheat and ignite, posing a risk of injury from fire and overheating hazards. This issue only affects some of the batteries installed in these Bose speakers. To find out if yours is affected by this recall, you will need to remove and inspect the battery serial number. If the first six digits of the battery pack serial number begin with one of the following, your battery pack is impacted and included in this recall:
083723
078352
084105
078591
078592
084106
086409
If it is, you will need to immediately stop using it, and arrange for a replacement direct from Bose. The process is quite quick and simple, here is the link for full details on what to do: