Update Instructions
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2904 Research Rd • Champaign, IL • 61822 • horizonhobby.com 
Spektrum Smart Charger  
Update instructions, Download Links 
and Change Log 
11 - February - 2022 
Smart Charger Firmware Change Logs 
S2200 AC G2 Smart Charger 
V1.0.0.17 
•  Bug Fix – Balance lead disconnection error now works properly  
V1.0.0.16 
•  Displays Battery and Charger temps in both F and C 
•  Added menu item: Auto Charge On/Off 
•  Expanded end voltage range for LiPo and LiHV battery types 
o  LiPo = 4.10V to 4.20V | LiHV = 4.18V to 4.35V 
S1200 AC G2 Smart Charger 
V1.0.0.26 
•  Bug Fix – Balance lead disconnection error now works properly  
V1.0.0.24 
•  Displays Battery and Charger temps in both F and C 
•  Added menu item: Auto Charge On/Off 
•  Expanded end voltage range for LiPo and LiHV battery types 
o  LiPo = 4.10V to 4.20V | LiHV = 4.18V to 4.35V 
S1400 AC G2 Smart Charger 
V3.1.0.9 
•  Bug Fix – Balance lead disconnection error now works properly  
•  Bug Fix – 1S Battery charging now functions correctly 
V1.0.0.26 
•  Displays Battery and Charger temps in both F and C 
•  Added menu item: Auto Charge On/Off 
•  Expanded end voltage range for LiPo and LiHV battery types 
o  LiPo = 4.10V to 4.20V | LiHV = 4.18V to 4.35V 
S1200 DC Smart Charger 
V3.1.0.9 
•  Bug Fix – Balance lead disconnection error now works properly  
V3.1.0.8 
•  Displays Battery and Charger temps in both F and C 
•  Added menu item: Auto Charge On/Off 
•  Expanded end voltage range for LiPo and LiHV battery types 
o  LiPo = 4.10V to 4.20V | LiHV = 4.18V to 4.35V 
•  Added menu options to adjust Input Power Limit (Wattage) and Minimum Input Power (Voltage) 
o  Located in System Settings Menu 
•  Fixed Battery C rating bug 
•  Fixed Smart NiMH charging bug 
V3.1.0.5 
•  G2 Battery Update will push to battery firmware if out of date 





