Consult the following table to check if a certain Range Extender battery is compatible with your bike's frame size!

↓Bike Battery→	52V13Ah/14Ah	52V16Ah/17Ah	52V19Ah/21Ah
Juggernaut Hub Duo Step-Thru (All Sizes)	✅	✅	✅
Juggernaut Hub Duo Step-Over (All Sizes)	✅	✅	✅
Juggernaut Classic Duo Step-Thru (All Sizes)	✅	✅	✅
Juggernaut Classic Duo Step-Over 16.5" (2021)	✅	✅	❌
Juggernaut Classic Duo Step-Over 18.5" (2021)	✅	✅	❌
Juggernaut Classic Duo Step-Over 17" (2022)	✅	❌	❌
Juggernaut Classic Duo Step-Over 18.5" (2022)	✅	✅	❌
Juggernaut HD Duo (All Sizes)	✅	✅	✅
Juggernaut Ultra Duo Step-Thru (All Versions and Sizes)	✅	✅	✅
Juggernaut Ultra Duo 2 Step-Over (Silver Lining Colour)	✅	✅	❌
Juggernaut Ultra Duo 2 Step-Over 17"	✅	✅	❌
Juggernaut Ultra Duo 2 Step-Over 19" + 20"	✅	✅	✅
Juggernaut Ultra Duo 3 Step-Over 17"	✅	✅	❌
Juggernaut Ultra Duo 3 Step-Over 19"	✅	✅	✅
Juggernaut Ultra FS Pro 2 17" M + 19" L	✅	❌	❌
Juggernaut Ultra FS Pro 2 20" XL	✅	✅	❌

eBike Batteries & Chargers