This sleek external battery is a secondary battery on the Juggernaut Duo series bikes along with the Juggernaut FS Pro 2/3. Use this battery if you want to ride even further than you can with just the internal hidden battery! A high-quality design and many power options provide reliable power and range to extend your ride!
Which Connector type to get?
Note: This battery has 3 different case heights - the larger 17Ah and 21Ah models may not fit smaller Step-Over frame sizes. Consult the pictures here for battery height and notes below for frame size compatibility.
Compatibility Notes:(1) 52V16Ah / 52V17Ah Batteries incompatible with 17" Medium Frame
(2) 52V19Ah / 52V21Ah Batteries incompatible with 17" Medium Frame
(3) 52V16Ah / 52V17Ah Batteries only compatible with 20" XL Frame
(4) 52V19Ah / 52V21Ah Batteries only compatible with Large Size Frame
Note: If you have a Juggernaut Duo Series bike you will need a Range Extender plate to connect your battery to the bike - consult this guide if you need help determining which type is on your bike! When buying your battery on this page the plate will be included!
Wondering about the brand options and what to pick between Top Brand and OEM/Sinowatt? Take a look at this FAQ for some information!
|52V13Ah / 52V14Ah
|52V16Ah / 52V17Ah
|52V19Ah / 52V21Ah
|Juggernaut Hub Duo SO / ST
|Juggernaut Classic Duo Step-Over (1)
|Juggernaut HD Duo
|Juggernaut Classic Duo Step-Thru
|Juggernaut Ultra Duo 2 Step-Over (2)
|Juggernaut Ultra Duo 3 Step-Over (3)
|Juggernaut Ultra Duo 3 Step-Thru
|Juggernaut Ultra Duo 4 Step-Thru
|Juggernaut Ultra FS Pro 2 (4)
|Juggernaut Ultra FS Pro 3
|Juggernaut FS Step Thru
|Juggernaut Ultra Eagle (4)
Need A Hand?
WoW it’s great no more range anxiety
The main battery gets good mileage, however I would suggest going with the extender. It fits nicely and can still use the step thru.
Excellent customer service. Thanks