Rear Rack + 13Ah Rear Battery for Engine Pro / Engine X

£399.00 £459.00
In Stock

Battery Material:
Lithium-ion Battery
35KM at Electric Mode 5 & 87KM at PAS Mode 1
Charging Time:
About 6 hours

Package dimensions: 23.22 inches * 9.65 inches * 15.75 inches (59.00 * 24.50 * 40.00 cm)

Package Weight: 17.2 lbs (7.8 Kg)

Installation Steps

Engine pro /Engine X rear shelf battery installation steps:

Please click here to view the installation steps.


Q1: About shipping
*In Stock: Once your order confirmation is complete, we will begin shipping within the next 2 business days. This means that your item will start shipping on the 3rd business day after your order is confirmed.
*Pre Sale: Please refer to the product page for detailed pre-order shipping times.
*No Stock: Please see product page for detailed pre-order shipping times.

*Shipped from our UK warehouse, it takes approximately 5-7 working days to receive your e-bike. (Remote areas and islands are excluded from delivery.)
*If you have other special requirements or urgent delivery date, please communicate with our customer service team when placing your order, we will try our best to meet your needs.

Please make sure the delivery address and phone number are accurate and available when make an order. If your order shipped by DX company, the delivery person will contact the recipient twice by phone to reserve a delivery time. Under the premise that the delivery time has been agreed with you, if DX arrives at the delivery address and no one receives the goods, the goods will be returned to the site. You may to bear the cost of re-delivery.
Please note: The express delivery company cannot be specified. We will arrange the most suitable express delivery for your delivery address.

Please Note: Remote areas and will incur additional shipping charges, our free shipping policy does Not cover this additional freight.You will need to pay for the additional freight before we ship you the product.
Please clickhere to learn if your location is the remote areas.
We will contact you after you place order in regarding to the details of freight through email. Please keep close attention to your email after you place order.

Q2: I need to buy parts, how can I buy them?
We recommend that you consult with the corresponding seller to purchase. If your seller does not provide it, you can contact
Customer Service email:

Q3: Can I order the rear battery only?
A: Please Note: This Engine Pro rear rack battery is an integrated design, the rear rack and battery cannot be purchased separately because the battery ca

Customer Reviews

Based on 3 reviews
A Pang
Great add on

This is a great add on with the extra battery my range has been extended, sturdy bracket and a bit longer then the stock bracket, instructions is clear enough so installation was not difficult though because of the compact area of the controller you might need to stuff the equalizer a bit tighter then expected.

The bracket has extra drill holes to allow for extra installations which was great!.

Only downside is that the back light for the battery is only a on/off light unlike the stock tailight that has a braking light. As I want to keep the stock tailight it was an easy fix with a 3D printed bracket that comfortably screws with the battery bracket, just make sure you don't connect the battery tailight.

Also comes with spare zipties and screws.

Rear Rack Battery for Engine Pro

Received this as a gift, it was well packaged and while unpacking it you could see it was a quality product. The installation was a relativity easy process, though it did take an hour or so. The written installation instructions that came in the box weren't particularly helpful, but there is a video available that clearly illustrates the process. It looks great on the bike and the rack is slightly longer than the original rack, so a larger/longer rack bag can fit on there much better. It does add more weight to what is already a heavy bike, which may make it more difficult to manoeuvre when not riding it. I've not had chance as yet to test the battery's performance, but I'm sure it will extend my continuous riding range to to 60 miles +. I have been on a few long rides where the on-board battery has given up the ghost much quicker than I anticipated, particularly if encountering strong headwinds or inclines towards the end of a ride. This can see the on-board battery drop off considerably from say 50% to zero within 5 miles. Hopefully now with this battery bike rack installed those problems will be a thing of the past. It is a costly purchase, but it will save on the extra weight and space taken up in carrying a spare on-board battery. Would recommend this if you do like to go on extended rides.

peter davis
p davis

the battery kit arrived within a few days of placing the order, installation was simple using a minimum of tools.all parts necessary are supplied including the battery blender, there is a very useful short vidio on this Engwe site showing the whole instalation.the battery slides under the rear rack and is very discreet in appearance, its hardly noticeable that it's there, I really like this kit, If I switch both batteries on together I get more range than using them individually, excellent kit, well worth considering.