Oh hey, actually reading the article for the win; it’s already possible to turn a limit on manually:

echo 80 | sudo tee /sys/class/hwmon/hwmon3/max_battery_charge_level

Agreed. I’m definitely capable of replacing my Decks’ batteries, but I’m excited about this feature because I’d still rather not have to. Plus my deck spends 99% of it’s life plugged in on it’s dock.