Manuals
Battery Holder S2, T3, T4 User’s Manual
http://www.starmicronics.com/support/Manual.aspx
SM-S230i
https://www.starmicronics.com/Support/Mannualfolder/um_BatteryHolder_S2.pdf
SM-T300i,SM-T300
https://www.starmicronics.com/Support/Mannualfolder/um_BatteryHolder_T3.pdf
SM-T400i
https://www.starmicronics.com/Support/Mannualfolder/um_BatteryHolder_T4.pdf
Update Contents:
-Changed the name of optional parts.
-Changed the battery charger illustration.
-Changed the storage temperature.