Galaxy S27 Ultra: Bigger Battery, Smarter Charge

The upcoming Samsung Galaxy S27 Ultra is anticipated to receive a substantial battery capacity increase, with rumors suggesting a 5,700mAh cell. This potential upgrade would represent a notable jump from the consistent 5,000mAh capacity in recent premium Galaxy S Ultra devices. The new model could also introduce an optimized charging curve.

This revised charging approach aims to maintain higher charging speeds for longer durations during the initial charging phases. The maximum 60W charging power is expected to remain, but improved efficiency could reduce overall recharge times. This strategy contrasts with a simple increase in wattage, potentially allowing Samsung to enhance real-world charging performance.

Samsung's development efforts come as Chinese smartphone manufacturers continue to lead in both battery capacity and charging speeds. By focusing on charging curve optimization, Samsung might offer a competitive advantage. Current flagship Galaxy S26 Ultra models support 60W charging, reaching approximately 75% in 30 minutes. The S27 Ultra's enhancements could build upon this performance.

Discussions among users indicate a desire for more ambitious battery advancements, including silicon-carbon technology and significantly larger capacities, to directly challenge top Chinese Android flagships. While enormous battery capacity is appealing, long-term battery health and stable performance over years are also crucial factors for user satisfaction, an area where Samsung has a strong reputation.