We are sorry to hear that your'e experiencing this issue after the update. We have shared similar feedback regarding increased battery drain after updating to One UI 7, and we completely understand how frustrating that can be, especially on a new or previously well-performing device.
We recommend trying the following steps:
Restart your device – Sometimes a simple restart post-update can help stabilize background processes. Check battery usage under Settings > Battery > Usage since last full charge to identify any apps consuming abnormal power. Wipe cache partition via Recovery Mode — this helps clean leftover temporary files from the previous version and has been known to resolve post-update battery drain. Enable Adaptive Battery and limit background activity for non-essential apps
Also, please consider sending an Error Report through the Samsung Members app so our team can review any unusual battery behavior: Samsung Members > Get Help > Send Feedback > Battery.
