Sadly, 19 hrs is all you have: The charging case for your OWS is just that — it will charge the earbuds when connected to ability (through USB-C) but it has no battery of its have. Even so, that changes if you dig in the Sony Headphones application and dig https://allhealthmarket.com/product/smart-wearables/smart-electronics-smart-wearables/headsets/original-lenovo-lp40-pro-tws-earphones-wireless-bluetooth-5-0-earbuds-headphone/