Hello there! mikel_2001,
Thanks for reaching out to us here in order to find out about whether it's okay to charge your beloved Samsung Galaxy A52 if the moisture detection notification is gone. I feel and understand why you are worried for a device that you've take care so much, if my device is facing similar experience, I will be bothered too. But don't fret, I will try to assist you to the best of my abilities.
Before you try out the below recommendations as to your solution, be sure to check if your device's software are updated with the latest version. Please check how to update your mobile device's software in the following order.
Step 1. Go to Settings > Software update.
Step 2. Tap on Download and install.
Step 3. Follow the on-screen instructions.
To ensure that there is no issue with the battery, please use Diagnostics in the Samsung Members app.
Check the status of your device with the Samsung Members app Diagnostic tool. You can select the individual categories you would like to diagnose or run a complete diagnostic check. After the diagnostic is completed, you can select the corresponding icon to see the results and status of your device. Follow the steps below to start your diagnostic check.
Step 1. Run Samsung Members and select Get help on the lower half of the screen.
Step 2. Tap View tests located under Diagnostics.
Just to make 100% sure that there is no problem at all, you may need to visit the Authorized Samsung Service Center nearest your area.
or book an appointment with the Samsung Members app as follows:
Support > Book an appointment to set one.
Should you need further assistance and guidance, you may contact us via our online Samsung Customer Care support channels below.