Firmware update saves the day.
In the month of July, Japanese peripheral maker Hori issued a statement on its website warning customers about a battery-draining issue linked to ts Joy-Con with a full D-Pad arrangement. Hori even reached out to us at the time with a statement about the problem:

We are working to have this issue resolved by the time this product is released in the US. We don't have further details at this time, but we wanted to personally reach out to let you know that we are working on this and this will be resolved.

Read the full article on nintendolife.com