AT command unknown in the arduino IDE environment

[settala1]

Describe your question or issue
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TINY_GSM_MODEM_SIM800 Library one of it's AT commands have been denied in the binary configuration environment "they say it's an undefined character. how can we go about it'
AT+CBC, Inquire charging status and remaining battery capacity.(it's the AT command needed to be defined)
Environment
Arduino IDE
This information is all important; it's hard to help without a complete set of answers.

• Version of Fimrware being used: Rev C
• Version of Arduino IDE being used:Arduino 1.8.20

[Baalmart]

Thanks @settala1 , I guess the rest here are better placed to assist. @deogratius2phantom @semajoel @NsubugaAnold