36v 17.5Ah eBike Battery


Please Note: This is the newest model of the downtube battery

This is the best downtube battery on the market! It is very easy to install, does not require Rivnuts, and is easier to slide both on the bike and off the bike. It is also the most water resistant battery we have yet to work with. It has a better charging port, better bottom plate, better locking port, and no USB port. The USB port took up valuable space, and was an vulnerable point of entry for moisture.

All of our batteries are shipped as class 9 hazardous materials. While most of our batteries are shipped from our US location, some will be shipped directly from our supplier overseas and will arrive in approximately 7 to 10 days. Please note that while we do our best to keep all of the batteries we list for sale in stock, there will be times when we order the battery of your choice and our warehouse manager will notify us that they are out of stock. This does not happen often and when it does, we do our best to ship your battery to your front door as soon as possible.

Please note that batteries cannot be returned without the services of a hazardous material shipper. This is a Federal Law that applies to all sellers of Lithium Ion batteries in the United States. Federal Law provides no exceptions to this rule. This is why we sell only the highest quality of eBike batteries.


36v 17.5Ah eBike Battery

This, the 36v 17.5Ah eBike Battery, is the newest version of the downtube battery and for once it is based more on function than form. This style of battery is significantly different (better) than any of its predecessors. Other down tube batteries were difficult to install as they had to be absolutely level. If, the battery was not perfectly level the battery would not easily slide on or off. Also, the downtube batteries often could not be attached without drilling into the frame and installing Rivnuts. With this new battery the use of Rivnuts will not be needed on most bike frames. Nearly the entire bottom of the base plate is an area where you can connect to the existing water bottle holes on your frame.
Another feature of this new battery style is that there is no USB port! Hurrah! This is more important than most realize. The USB port was a bad idea from the beginning. The USP port took up vital room in the battery case, was a point of ingress of moisture into the cells, and the small rubber cover never would stay in place. This new battery also features a better lock and charging port.

In my opinion, if you are ready to upgrade your battery, take off the old Hailong base on your current bike and put on this new downtube battery and base. It will be worth the extra work.

Our other 36v battery is a 36v 15Ah which also features the new version.

We also stock Anderson Powerpole connectors for your battery.


Additional information

Weight6 oz
Dimensions8 × 12 × 8 in