After updating my iphone 11 ios 16.6 my battery health is draining

Hello sehar23,

It is expected that the maximum capacity of your battery will decrease over time as it ages chemically. Your battery is designed to retain up to 80% of its maximum capacity before your battery needs to be replaced. This resource has more details, for reference: iPhone Battery and Performance - Apple Support

If you are experiencing decreased battery life from your iPhone, approximately how long are you able to use your iPhone on a full charge?

Additionally, does the reported battery level of your iPhone appear to decrease more quickly when using certain apps or features?

Let us know, and we'll go from there based on those details.