The U.S. Consumer Product Safety Commission announced a recall of lithium-ion battery packs used with Bose S1 Pro and S1 Pro+ portable Bluetooth speaker systems. The agency said the battery packs can overheat and ignite, creating a risk of injury from fire and overheating hazards.

The recall covers about 634,759 battery packs in the United States. The commission said about 35,400 were sold in Canada. The affected batteries were sold with the speakers and also as accessories or replacement parts.

The commission said the firm has received seven reports of battery packs melting, producing smoke or catching fire, including six reports of property damage. No injuries have been reported.

The recalled rechargeable packs are intended for the Bose S1 Pro and S1 Pro+ systems. The 17-digit battery serial number is printed on a label on the bottom of the pack. Battery packs included in the recall have serial numbers beginning with one of these six-digit prefixes: 083723, 078352, 084105, 078591, 078592, 084106, or 086409, according to the notice.

The agency said owners should take out any recalled battery pack installed in an S1 Pro or S1 Pro+ speaker and stop using the battery packs at once. The speakers may continue to be used on AC power once the battery is removed. Consumers are asked to register and provide the affected battery’s serial number at http://www.bose.com/support/s1-battery-recall to obtain a free replacement. For packs not installed in a speaker, the serial number can be read directly and submitted on the website.

The commission also instructed consumers to dispose of the recalled battery packs in line with local and state regulations. The notice warns not to place the batteries in household trash, the general recycling stream, or retail used-battery collection boxes. A municipal household hazardous waste collection center may accept the recalled packs; consumers should contact the center or their municipality for guidance before bringing in a battery, the agency said.

The battery packs were sold at Bose, Best Buy and other retail locations and distributors nationwide, and on Amazon.com, Bose.com, BestBuy.com, Walmart.com and other websites. Sales occurred from December 2017 through July 2026, priced from $100 to $160 for individual battery packs. The speaker systems that included the packs were sold for $700.

Bose Corporation of Framingham, Mass., is listed as the importer. The battery packs were manufactured in China. The recall date is Nov. 5, 2026, and the recall number is 27-065, according to the commission.

Consumers can contact Bose toll-free at 800-278-1083, weekdays 9 a.m.–9 p.m. ET and Saturdays 9 a.m.–7 p.m. ET, or visit the recall website or www.bose.com and click on Product Recalls for more information, the commission said.