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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 only compatible with 20" XL Frame
(3) 52V19Ah / 52V21Ah Batteries incompatible with 17" Medium 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!
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!
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 only compatible with 20" XL Frame
(3) 52V19Ah / 52V21Ah Batteries incompatible with 17" Medium 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 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 XD FS | |||
| Juggernaut FS Step Thru | |||
| Juggernaut Ultra Eagle (4) |
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Customer Reviews
Based on 19 reviews
63%
(12)
21%
(4)
5%
(1)
0%
(0)
11%
(2)
M
I purchased the duo OEM backup battery a little over a year ago. The first battery I received did not charge. I was made to prove to them that it was not charging before. They would send her a replacement and I had to pay for shipping. The second battery I received Worked for the first few months. I hadn’t used it for a few months, but kept it charged… I thought. When I went to use it, it had no charge and was unable to hold a charge. In other words, both batteries were faulty and a complete waste of money
A
Hello, I really like my Juggernaut XD, it’s just that I have a challenging commute and I need more battery. I bought the XD expecting the range extender to be available soon after buying. Well, I was happy to be informed that the design had been completed so I ordered. I was told “plug and play” but the 11 step directions said that a qualified person needs to install. Being a bike mechanic from the 80’s and 90’s I reluctantly decided to install. I basically got to the end but could not stuff all the wires, connectors, XT-60, etc. back inside the frame. I cannot get my original battery back in the back so I have decided to go to a reputable local bicycle shop to see if they can help me. I am hopeful but it has been a challenge. So, my beautiful XD is resting awaiting to be revived. When this is all done, I hope to write a better review. Most everyone at Biktrix have honestly tried to help. More to come.
C
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