The following notice has been issued by the manufacturer:
IMPORTANT SAFETY NOTICE
Denon is voluntarily instituting a worldwide corrective action program for certain batches of its HEOS 1 Go Packs, a lithium-ion rechargeable battery pack sold as an accessory for the HEOS 1 portable speaker.
Denon has determined that the battery in the Go Pack can overheat, posing a fire hazard. The corrective action does not affect any other Denon products.
In case you have purchased a HEOS Go Pack please check here (https://www.gopackreplace.com/gb/en) if your Go Pack is affected. You can find your serial number at the back of the product.
We would like to emphasize that Denon takes customer safety very seriously and out of an abundance of caution Denon has decided voluntarily to implement a battery replacement program to remove any potential risk.
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