DIY custom battery mount Ecoflow Trail 300

[murphtron]

I finished a custom battery mount for the Bronco. It’s specifically for the Ecoflow Trail 200/300 battery series. It mounts to existing hardtop retention bolts next to the passenger side rollbar. Pics below.

It’s a small capacity 288Wh battery with USB and 12V outputs (no AC out). I don’t have large power needs. The main purpose is to power my BougeRV fridge, and keep it going should I have a one day layover with no other power. I’m usually moving everyday and the battery is charged from the 12V rear passenger outlet.

But I had no way to secure the battery. So I started the design process using CAD.V1 (cardboard…). Made a quick prototype and figured let’s keep going. A friend (the kind of friend you really want!) has a 3D printer, welder, etc. So we BS-ed during post-mountain bike beers and he agreed to do a Fusion360 CAD render.

After a couple 3D prints, and test fits, I then sent it to Send-Cut-Send to have the metal parts cut. A few days later SCS delivered (what an amazing service!!!) and we welded, grinded it smooth, and then several coats of matte black.

Here’s the result. A small, integrated battery mount that fits between the rollbar and hardtop window. Uses existing hardtop bolt threads to secure it (I sourced low profile flat M8 bolts for the base). I’ve completed 20-30 twisty off-road miles so far and the tolerances seem to work between the rollbar and the window as the frame flexes.

I realize it’s not useful for everyone. But it works for my low power needs. And was fun! My first metal project and first CAD learning experience. A few more ideas are percolating.

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[Q1svt]

Nice fabrication… and use of an unusual space. Hoping to do something similar for a dc-dc charger.

 

[dejones64]

Awesome. Wish my Bluetti was that thin. I will be diy a tray on that side using molle panel and the Rough Country window molle panel (for 2-door) to mount the Bluetti charger 2.

 

[timhood]

I’m curious what the fabrication cost was. I’d be worried that my kind of off-roading could send the battery into the side window. I’m still in the “thinking about it” stage of a battery purchase, but one thought was how I would secure it—things have been known to get airborne in my cargo area!

 

[dejones64]

I’m curious what the fabrication cost was. I’d be worried that my kind of off-roading could send the battery into the side window. I’m still in the “thinking about it” stage of a battery purchase, but one thought was how I would secure it—things have been known to get airborne in my cargo area!

I was concerned about the "flying out the window" also. So I installed the Rough Country side window molle panels. My molle battery tray will sit inside that, strap it down to the tray (my rear seats have been deleted).

The Rough Country side window molle panels may not fit in there though with his battery location so close to the window.

I hope to finish it up this week and have some pics.

 

[murphtron]

I’m curious what the fabrication cost was. I’d be worried that my kind of off-roading could send the battery into the side window. I’m still in the “thinking about it” stage of a battery purchase, but one thought was how I would secure it—things have been known to get airborne in my cargo area!

I had the same concern about the battery going airborne. The design includes two slots through which I can run 1” webbing to hold down the battery. At least that was the plan. However after welding it seems like the heat shrunk the width slightly (or perhaps the tolerances were too tight) so the battery really wedges in the box tightly. It takes quite a bit of force to remove it. And the webbing doesn’t fit. I’ve thought about a second version to fix that. But haven’t bothered yet. I don’t think it’s going to fly out while speeding through the whoops.

I also considered doing something similar to the AAL Dometic water jug tie down that uses a Cobra-style buckle. I think there’s enough room.

sendcutsend fabrication cost was $43 including tax + free shipping using 1008 Mild Steel .048”/1.2mm. This is how it came packaged. And a few cents for 3D printer materials. And time.

 

[Chrome_Pony]

I’m curious what the fabrication cost was. I’d be worried that my kind of off-roading could send the battery into the side window. I’m still in the “thinking about it” stage of a battery purchase, but one thought was how I would secure it—things have been known to get airborne in my cargo area!

Less concerned about the battery flying off than I am with the battery being a piece of shit and dying after a year, which has been my experience with two separate Ecoflows.

 

[JoHo]

SCS does really good bending so you could have saved yourself a lot of welding! I have my 110VAC outlet for my much larger battery system in the same location.

 

[dejones64]

Following-up with my solar battery storage/set-up. 2-dr Black Diamond with rear seat delete, plywood platform with fridge slide on the passenger side.

Installed the side window Rough Country molle panels.
Modified (cut-up) the Turn Offroad front overhead molle panel, and made a shelf for my Bluetti AC180.

Mounted Bluetti Charger 2, AC180 on the shelf, Setpower fridge. Nothing strapped down yet, dry fit and for pics.

No pics but I mounted a Callsun 200w bifacial solar panel on top of my Aspen Lite RTT. Still need to get it all wired up.

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