This just in - the National Telecommunications Agency in Brazil confirmed the Galaxy Note9's massive battery in a leaked document. The certification document doesn't reveal much but it confirms one of the main features the Galaxy Note9 will boast over its predecessor - the 4,000 mAh battery. Rumors about the large battery capacity have been going around since April and the bit was later confirmed by a different source in June. Now, a month later, ANATEL is here to solidify these claims with an official document. We think that it doesn't get any more legitimate than this. We hope...
Source: https://www.gsmarena.com/brazils_national_telecommunications_agency_confirms_galaxy_note9s_4000_mah_battery-news-32359.php