A new leak suggests Vivo is planning major battery upgrades for its next flagship lineup, likely the X500 series, with capacities around 7,000mAh. The tipster also claims some upcoming mid-range Vivo phones may feature even larger 8,000mAh to 9,000mAh cells. The X500 lineup is expected to launch late next year, while the X300 Ultra is still pending launch. However, gl…A new leak suggests Vivo is planning major battery upgrades for its next flagship lineup, likely the X500 series, with capacities around 7,000mAh. The tipster also claims some upcoming mid-range Vivo phones may feature even larger 8,000mAh to 9,000mAh cells. The X500 lineup is expected to launch late next year, while the X300 Ultra is still pending launch. However, gl…