Your iPhone running iOS 13.2 experiencing poor battery life? Has your battery gone from great to terrible? Here's what you need to know to diagnose and fix the problem.
Go to Settings > Battery > Battery Health for the news -- good or bad.
If this screen shows Maximum Capacity over 80 percent and Peak Performance Capability is showing "Your battery is currently supporting normal peak performance" then you are OK. Anything else then you may have isolated your battery issue and you may be looking at replacing the battery.