Bose recalls about 635,000 S1 Pro and S1 Pro+ battery packs that can overheat and ignite

Bose is recalling about 634,759 lithium-ion battery packs for its S1 Pro and S1 Pro+ portable Bluetooth speaker systems, the U.S. Consumer Product Safety Commission (CPSC) announced on November 5, 2026. About 35,400 more were sold in Canada, where Health Canada published a joint notice the same day. According to the CPSC, the packs can overheat and ignite. Bose has received seven reports of packs melting, giving off smoke or catching fire, six of them involving property damage, and no reports of injuries.

Which packs are covered

What decides it is the battery pack's own serial number, which Bose says is separate from the speaker's. The pack's 17-digit number is on a label on its underside, and the recall covers numbers beginning with 083723, 078352, 084105, 078591, 078592, 084106 or 086409. Bose says any other prefix is outside the recall.

The packs were sold with the speakers and on their own, as accessories and replacement parts. Bose's recall page adds that some S1 Pro systems came without a pack, and asks owners who added one later to check it too. Sellers named by the CPSC include Bose, Best Buy, Amazon.com and Walmart.com. A single pack cost $100 to $160, and a speaker system with a pack cost $700.

The two agencies give different sale dates. The CPSC says December 2017 through July 2026. Health Canada says April 2020 to May 2024 for S1 Pro packs and June 2025 to July 2026 for S1 Pro+ packs. Neither notice explains the difference, and Bose's own check goes by serial number, not purchase date.

What owners are told to do

The CPSC tells owners to take a recalled pack out of the speaker and stop using it immediately. Bose's recall page says to power the system off and disconnect it before removing the pack. Both the CPSC and Bose say the speaker can still run on AC power with the pack removed, so it keeps working, but only plugged in, until a replacement arrives. Neither says how long that will take.

The CPSC says the replacement is free, and that owners register and give the pack's serial number on Bose's recall page.

• Phone: 800-278-1083, 9 a.m. to 9 p.m. ET Monday through Friday, 9 a.m. to 7 p.m. ET Saturday.
• Online: Bose's recall page.
• Recall number: 27-065 on the CPSC notice.

Why the old pack cannot go in a store battery box

The CPSC's disposal note rules out the usual options. It says not to put a recalled pack in the trash, in street-level or curbside recycling, or in the used-battery boxes at retail and home improvement stores, because recalled lithium-ion batteries “present a greater risk of fire”. It sends owners to a municipal household hazardous waste collection center, with a call first to ask whether the center takes recalled lithium-ion batteries, and then to the municipality if it does not.

The U.S. Environmental Protection Agency says most lithium-ion batteries are likely to count as hazardous waste once thrown away, given the risk of fire or explosion from careless handling.

What Health Canada adds

The CPSC notice gives the hazard but not the cause. Health Canada ties the hazard to aging: it says that keeping the packs in service as they get older subjects the cells to “potentially damaging operating conditions”. It counts seven incidents worldwide as of October 5, 2026, none in Canada and none with injuries.

How it compares with other speaker recalls

We searched the CPSC's recall database for titles containing “speaker” and kept the recalls whose hazard was a battery overheating or catching fire. By units, the Bose recall is the largest of them. A title search may not find every such recall.

Bose's previous fire-hazard recall, in June 2023, was bigger but had a different cause: about 884,000 Acoustimass, Lifestyle and Companion bass modules with electrical components that could fail. Owners were offered a free repair or a 40% discount on a replacement product.