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925	925
926	926
927	927
928		-=== 4.3.1 ​Battery Note ===
	928	+1.
	929	+11.
	930	+111. ​Battery Note
929	929
930		-(((
931	931	The Li-SICO battery is designed for small current / long period application. It is not good to use a high current, short period transmit method. The recommended minimum period for use of this battery is 5 minutes. If you use a shorter period time to transmit LoRa, then the battery life may be decreased.
932		-)))
933	933
934	934
	935	+1.
	936	+11.
	937	+111. ​Replace the battery
935	935
936		-=== ​4.3.2 Replace the battery ===
937		-
938	938	You can change the battery in the LSPH01.The type of battery is not limited as long as the output is between 3v to 3.6v. On the main board, there is a diode (D1) between the battery and the main circuit. If you need to use a battery with less than 3.3v, please remove the D1 and shortcut the two pads of it so there won’t be voltage drop between battery and main board.
939	939
	941	+
940	940	The default battery pack of LSPH01 includes a ER26500 plus super capacitor. If user can’t find this pack locally, they can find ER26500 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes)
941	941
942	942
943	943
944		-= 5. Use AT Command =
945	945
946		-== 5.1 Access AT Commands ==
947	947
	948	+
	949	+1. Use AT Command
	950	+11. Access AT Commands
	951	+
948	948	LSPH01 supports AT Command set in the stock firmware. You can use a USB to TTL adapter to connect to LSPH01 for using AT command, as below.
949	949
950		-[[image:1654589001411-343.png]]
	954	+[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image025.png]]
951	951
952	952	Connection:
953	953
954	954	USB TTL GND <~-~-~-~-> GND
955	955
956		-USB TTL TXD  <~-~-~-~-> UART_RXD
	960	+USB TTL TXD <~-~-~-~-> UART_RXD
957	957
958		-USB TTL RXD  <~-~-~-~-> UART_TXD
	962	+USB TTL RXD <~-~-~-~-> UART_TXD
959	959
960	960
961	961	In the PC, you need to set the serial baud rate to **9600** to access the serial console for LSPH01. LSPH01 will output system info once power on as below:

1654589001411-343.png

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1		-XWiki.Xiaoling

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