We are writing to advise you that 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 program does not affect any other Denon products.
In case you have purchased a HEOS Go Pack please check if your GoPack is affected. You can find the serial number at the back of the product. Only HEOS Go Pack Rechargeable Batteries with the following serial numbers are affected: 5xxGxxxxxx (any serial number beginning with 5) and 601G913517 to 601G914004.
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 programme to remove any potential risk.
If you have an affected battery pack, please stop using it immediately and register your product by calling the authorized service center of D&M Singapore (Office hours from Monday to Saturday) at phone number: +65 6273 7955 in order to start the exchange process. Once you have registered your GoPack, and returned it to the D&M authorized service center, you will receive a replacement GoPack free of charge.
We regret any inconvenience this situation may cause and thank you for your cooperation and continued support.
Kind regards Denon