Foldable smartphones face battery capacity and design constraints.Honor Magic V3 has the largest battery at 5,150mAh, followed by Pixel 9 Pro Fold with 4,800mAh.Samsung Galaxy Z Fold 6 has the smallest capacity at 4,400mAh.Samsung Galaxy S24 Ultra, a bar phone, features a 5,000mAh battery.In battery tests, Honor Magic V3 and Galaxy Z Fold 6 performed well in media consumption.Samsung Galaxy S24 Ultra excelled in gaming efficiency, while Pixel 9 Pro Fold struggled.S24 Ultra demonstrated the best standby power management, losing only 5% in 16 hours.Foldables showed advantage in power conservation during navigation tasks.Galaxy Z Fold 6 showed the best overall performance among the foldables.Honor Magic V3 showcased strengths in media playback and standby management.Pixel 9 Pro Fold faced challenges in battery optimization during resource-intensive tasks.Foldable phones have advancements but still lag behind bar phones in battery endurance.Foldables bring unique advantages but bar phones remain the gold standard for battery life.