I replaced my Galaxy Buds Plus batteries : r/galaxybuds
Amazon.com: iFixit Batteries Compatible with Galaxy Buds+ : Electronics
Upcoming Galaxy Buds Pro 2 may get bigger charging case and battery - Android Community
Amazon.com: Rinetics Charging Case Replacement Compatible with Galaxy Buds Live, Charger Case for Samsung Galaxy Buds Live SM-R180(Wired Charging Only, Earbuds not Included, Black Color) : Electronics
Galaxy Buds Pro Teardown: Two Steps Back - YouTube
Galaxy Buds Live Teardown: The Most Repairable Earbuds Yet? - YouTube