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Twin Tube Battery Mount

7 reviews
SKU: BAT344.1

Electric Assist is a great way to make tandeming way more fun. Hill climbing is a breeze and even really long rides are within range. How to carry the battery though? This mount solves that. It puts the battery right where you'd like it, down low and out of the way. It doesn't compete for space with anything else, and your bike's handling is unaffected. Sweet! While we designed this for the Screamer, we are aware there are other twin bottom tube bikes out there this versatile mount will probably fit. We just haven't had time to test them yet.


1. Where does this go?

On a Screamer, this mount is designed to go from just behind the idler mount to about 8 inches (20cm) ahead. A cutout in the plate wraps around the Screamer idler mount. But, since the plate has adjustment slots, it can be used other places.

2. How does it attach?

The plate attaches via six modified Cateye brand clamps. We use Cateye clamps for all sorts of things, and six is plenty to keep your battery super secure. Cateye clamps are great because they work really well, are super strong, and are available in a nice range of sizes.

3. Will my battery fit on it?

Almost certainly. If it's any sort of regular downtube type battery, yes. The top of the plate is generously sized and has lots of 5mm mounting holes, so it will bolt right on. If you have a brick type battery or are using a case of some kind, you'll be able to attach it without much trouble.


  1. Lay the plate on top of the twin bottom tubes where you think the battery should go. On a Screamer, this is usually right near the twin idler mount.
  2. Check that the on edge of each tube is within reach of the adjustment slots. As long as the edge of the tube is within a slot or no more than about 3/16 inch (5mm) beyond the end of a slot, the tube is within reach.
  3. Snap the Cateye clamps around the tubes so the aluminum bushings pressed into the clamps are facing up where the slots in the plate are. Make sure to slip the clamps under any cables. Line the clamps up with the slots in the plate, and start the bolts through the plate into the clamps.
  4. When the bolts are all started, slide the plate around to straighten it up and get it into final position. Tighten all the clamps.


  • Slots in the plate allow for forward/back and side to side adjustment as well has allowing use on bikes with different tube spacings and angles.
  • 25 mounting holes, in 3 rows, make attaching your battery easy. All are threaded m5, the standard battery mounting size.
  • Two battery standoffs with m5 flat head mounting bolts are provided. This is the most common downtube battery mounting arrangement.
  • Plate is made from black anodized 6061T6 Aluminum. Overall plate size is 8" x 3" (20 x 7.5cm). 25 m5 threaded battery mounting holes in 3 rows. Holes are multiples of the standard bottle boss spacing, so downtube batteries will bolt right on in your choice of places.
  • Fits all known RANS Screamer models. The mount is made with adjustment slots, so it will work on additional twin bottom tube bikes as well, we just haven't had the time to do the testing. We'll try to keep this entry up to date, but call or email us if you have any questions about fit on your bike.
Customer Reviews
4.9 Based on 7 Reviews
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Filter Reviews:
Mark W.
United States United States

Battery mount for Rans Screamer

I've added an ebikekit to my Rans Screamer. The Battery rack bolted nicely to the frame of the bike under the stoker's seat. We have ridden five times so far with no issues. The plate is securely attached to the frame and there are lots of holes to attach the battery mount.

T-Cycle Twin Tube Battery Mount ReviewT-Cycle Twin Tube Battery Mount Review
Thomas R.
United States United States


This item was back ordered when I ordered it. It was worth over a month wait. I have two tour easy bikes, and a 1000w mid drive and this battery mount keeps the weight forward and down on the ebike version. The bike rides great with this setup, as compared to a heavy rear hub and battery at the rear, which would make the bike even more light on the front. My bike is black, and the black anodized finish looks great. With a 13ah 52v battery, there is PLENTY of room but it looks like a very custom fit. I ordered other items from Terra, and all of them were terrific, beautifully crafted. I highly recommend their idler wheel upgrade, too.

Steven C.
United States United States

Easy Racers Twin Tube Mount

Awesome mount, easy to install and keeps the weight of the battery below the center of gravity. Bike handles like a dream with the battery on this mount, Highest recommendation!

Erik D.
United States United States

Battery Mount

Easy to install. Provides a solid mount for a heavy battery pack. Just what I needed.

United States United States

This mount likely works best on Rans. The twin bars on my Tour Easy are not parallel - one end too close for the clamps. So, I had to do some jerry rigging to make it fit and have the pre-drilled screw holes in the middle between the two bars. Suggest adding another role of screw holes. Only four of the clamps (the mount came with 6) would fit. Nonetheless, the mount is very snug and provides a stable base for the battery. Pricey - with delivery the cost is $100.