Y300 GT: Vivo teases new mid-range phone with massive 7,620 mAh battery

The Vivo Y300 GT is set to launch in China as a new mid-range phone on May 9, 2025. Hours before the official unveiling, the company teased the smartphone by sharing the core specs, and the massive 7,620 mAh battery is one of the main highlights.

Vivo adds that this large battery supports 90 W fast charging (Ugreen Nexode 100 W charger curr. $49.99 on Amazon), and the company claims there won't be any massive capacity degradation within 54 months. The recently shared teasers also confirm that the Y300 GT has support for bypass charging, which should lead to lower temperatures and better performance while the device is plugged in.

On that note, the Vivo Y300 GT is now confirmed to feature the Dimensity 8400 that's tuned for performance. It's paired with a large 7K vapor cooling setup, which is said to keep the mid-range MediaTek SoC cool during heavy loads. There's also additional tuning that can supposedly lower the peak energy consumption by 44%.

Other aspects of this mid-range smartphone that were confirmed with the recent teasers include military-grade waterproof rating, sand and dust resistance, and anti-fall protection. From all the specs and images that Vivo has shared, it seems that the Y300 GT is a rebrand of the iQOO Z10 Turbo, which launched in late April 2025.

If this holds true, the Y300 GT should sport a 6.78-inch display with a 144 Hz refresh rate, up to 16 GB of LPDDR5X RAM and 512 GB of UFS 4.1 storage, and a self-developed Q1 gaming chip. Vivo has yet to share pricing details for its upcoming mid-range phone, but the iQOO Z10 Turbo launched at a starting price of CNY 1799, around $250.