SuperPit But We Have It At Home - Team 1727 REX

Team 1727 REX is excited to share our pit design for the 2024 season! Cheap, easy to transport, and charges 10 batteries simultaneously, what more could you need (wink wink).


  • Sub $1000 budget
  • 10 battery simultaneous charging
  • Lighting
  • 2x8’ of table space
  • Shelving for 48 storage bins


Battery Insert
By removing just three of the drawers, we opened up space for a custom laser cut polycarbonate insert that can hold 10 batteries, with plenty of room to mount chargers of your choice in the back. We used three of the 3 Bank Chargers that we had from our previous battery cart, though there is plenty of room for chargers of your choice.

The chargers are mounted in the back as well the SB50 connectors next to where the batteries sit using 8-32 hardware we had on hand. To install, we drilled out the rivets holding the drawer slides and drilled a hole in the back right of the cart to feed the power strip through. We had originally planned to rivet the sides of the insert to the cart but it slid in very snug so we opted not to.

Lastly, a grommet was 3D printed to protect the power strip cord going through the top of the cart.

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Cart Structure
The surrounding cart structure is nothing more than 1/2" Plywood attached with 1/4-20 bolts and rivnuts. The plywood was cut using a track saw, but a table saw would also work fine. Before assembling, we painted all the wood black to match the Husky Carts. We purchased a wrench driven Rivnut Tool from McMaster-Carr mostly due to price, though I really can’t recommend this for any more than assembling the cart. It was much harder to use than lever-style rivnut tools, but got the job done on a budget. We installed 6 rivnuts on each side and 8 on the back which was more than enough to hold the structure. The handle and power strip that come with the cart also need to be removed before attaching the wood.

The top of the cart is supported by a frame made with 1x1" aluminum tubing and aluminum gussets made on our CNC router. LED light strips mounted underneath provide great lighting in the pit.

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Most effective way to cut the plywood:

This pit design is by no means perfect, but our team (and many others) cannot justify spending thousands of dollars on roadcases or other fancy pit setups. With the donations we received from Home Depot and Lowes, we spent less than $600, and we’ve managed to create a functional and cost-effective pit setup that meets our team’s needs and budget constraints. Feel free to use our design, including the CAD files below.

Onshape Doc


This looks great!

Keep a close eye on the caster wheels - especially for the toolbox holding the batteries. You might see if you can stiffen up the sometimes comparitively thin aluminum it’s mounted to.


I love this so much!
How do you transport these? And can you put a panel over the work bench so that area can be used for storage during shipping?


This is awesome!


Those wheels can get stuck in sidewalk cracks and have trouble over wire run protectors in pits. If you’re gonna stiffen the casters you might want to just swap them out to larger diameter wheels at the same time to make moving it easier.

Edit: shared this with our team cuz this is seriously awesome! We’re in the midst of setting up a mock pit in out new lab space to work out of so this is giving us some ideas definitely

Pretty cool upgrades to COTS pit gear!

Maybe call it… ThriftyPit?


I love this!

How did you get Home Depot to give you such a sizeable discount? The best I’ve been able to get is a $25 gift card.

We haven’t had any issues so far, but we will keep an eye out.

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That’s a great idea, we plan on wrapping the top section with a moving blanket until we upgrade any further.

We currently transport in a sprinter van. It is not difficult to load with a folding ramp and a few people.

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Agreed that these casters hate being moved regularly.

My suggestion would be to add a piece of 3/4 plywood to the bottom of this setup, and bolt the casters through it into the toolbox. You can also screw through it into the plywood sides for some added rigidity.

Is there anything that prevents your storage bins from falling off backwards? If there isn’t, you could use the panel that @Zatack7 mentioned as some type of backstop.

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You could make it out of lauan or some other thin plywood or some thin polycarb just thick enough to not break when pushed up against. Then put a hinge on it and have it fold over like some other super pints out there.

Some terrific ideas there!

One question: how do you tell which batteries are charged (it doesn’t seem like the charger lights are visible)?

One caution, we have this cart and after 4 years it’s at the end of it’s useful life. As others have mentioned the casters are definite weak spot, as is the metal they are fastened to – take the weight limit seriously. Also some of our drawer slides have failed and it has proven nigh on impossible to find correct replacements – several companies make these for Husky and they are not identical :frowning:

These are super cool! I love how affordable and sleek this is. I think a backstop on top is definitely a good idea to avoid toppling things into a neighbor’s pit, but I will definitely recommend this method to others. Reminds me a lot of 2135’s pit setup, thought this does seem a bit easier to put together.

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The Home Depot closest to us has been very supportive with donations over the past few years. I’m sure the management at each location makes a big difference.

For our first iteration we focused on making everything as simple as possible, but that is a great idea we will consider in the future.

We use a Battery Beak to test batteries before matches. Also having one designated person handle the batteries throughout events helps ensure only fully charged batteries leave the pit.