Oppo Reno15

The Oppo Reno15 houses a 6500mAh Si-Carbon Li-Ion cell — one of the largest batteries in the smartphone market. This massive capacity translates to comfortable 2-day usage for moderate users, or a full heavy-use day with screen-on time potentially exceeding 10 hours. Keep in mind that the 6.59" 120Hz display is a significant power consumer — so real-world endurance depends heavily on screen brightness and content type.

Wired charging tops out at 90W (SuperVOOC) — fast enough that a 20-minute charge during lunch provides meaningful battery boost for the rest of the day. Specifically, 0-50% takes approximately 30 min minutes, with a full charge completing in around 55 min minutes. Wireless charging at 15W adds the convenience of drop-and-charge, making nightstand charging effortless.

The charging ecosystem extends beyond basic fill-ups: reverse wireless charging at YesW for topping up earbuds or a smartwatch; reverse wired charging via USB-C; battery health management (AI battery management). The battery health features are particularly noteworthy — they help maintain long-term battery capacity by intelligently managing charge cycles, meaning the Oppo Reno15 should hold its charge capacity better over 2-3 years of ownership.

Note that a charger is not included in the box. To achieve the full 90W charging speed, you'll need a compatible USB-C PD adapter, typically costing $20-40 extra. Using a lower-wattage charger will work but charge significantly slower.