1# Battery Info Error Codes 2 3<!--Kit: Basic Services Kit--> 4<!--Subsystem: PowerManager--> 5<!--Owner: @zhang-yinglie; @volcano_wang--> 6<!--Designer: @wangyantian0--> 7<!--Tester: @alien0208--> 8<!--Adviser: @w_Machine_cc--> 9 10> **NOTE** 11> 12> This topic describes only module-specific error codes. For details about universal error codes, see [Universal Error Codes](../errorcode-universal.md). 13 14## 5100101 Service Connection Failure 15 16**Error Message** 17 18Failed to connect to the service. 19 20**Description** 21 22This error code is reported if a service connection failure occurs. 23 24**Possible causes** 25 261. The system service stops running. 27 282. The internal communication of system services is abnormal. 29 30**Solution** 31 32Check whether the system services are running properly. 33 341. Run the following command on the console to view the current system service list: 35 36 ```bash 37 > hdc shell hidumper -ls 38 ``` 39 402. Check whether **BatteryService** is present on the system service list. 41