No. If this happens, the battery pack may be defective or the module's circuit board may have failed. In the module, install another fully charged battery pack. Then run the module functional test found in RF Service Procedure 1. If this test fails or the battery pack gets hot, email ANKOM Technology at https://www.ankom.com/contact/technical-services or call 315-986-8090 for module repair.
Note: It is normal for the batteries to become warm to the touch when charging, while using the RF25 battery charger.