Please select your color
![]()
Overview
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!
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!
Compatibility
| Bike Name | 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/Pro Step-Over (3) | |||
| Juggernaut Ultra Duo 3/Pro Step-Thru | |||
| Juggernaut Ultra Duo 4 Step-Thru | |||
| Juggernaut Ultra FS Pro 2 (4) | |||
| Juggernaut Ultra FS Pro 3 | |||
| Juggernaut XD FS | |||
| Juggernaut FS Step Thru | |||
| Juggernaut Ultra Eagle (4) |
Need A Hand?
Customer Reviews
Based on 18 reviews
67%
(12)
22%
(4)
6%
(1)
0%
(0)
6%
(1)
E
When I rode my juggernaut FS XD and I took the riding to work route. With my old bike, when I got to my work, I had to plug-in the battery for at least an hour and a half before I went back home. This time I did the full route and still had 50% left! This range is great and I love not having range anxiety!
G
i can ride more 50 KLM no pedaling at 32.5 klm hrs and more than 150 pedaling love it Merci Biktrix you are top bike cant wait to buy one off those XD
W
Prompt delivery. Excellent customer service. On two separate occasions I called and it was off hours and I did not leave a callback message and the next day they spontaneously called me to ask if they could help me
C
The best shipping , the best bikes .and biggest smiles
J
I ordered a new extended range battery from Biktrix as I’m planning for a few extended day trips this summer. Curtis quickly got my order in and I was surprised and pleased that it was on sale for $200 off the regular price. It was shipped and got here quickly with no issues. Thanks Curtis and Biktrix!
W
Great
L
WoW it’s great no more range anxiety
G
The main battery gets good mileage, however I would suggest going with the extender. It fits nicely and can still use the step thru.
A
Excellent customer service. Thanks