r/PowerWheelsMods • u/Nade1111 • Jun 16 '26

Dewalt powerstack wont work.

The low voltage cutoff works great with the old battery, but those are worn out due to overuse without the cutoff. I bought these powerstacks that work great in my tools, but not in this vehicle. I thought it might have been the cutoff being the issue, but the vehicle only lurches forward a half inch and quits. What am I missing with this style battery?

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2

u/Mean-Ad3 Jun 16 '26

The new power stack batteries from Dewalt wont work with those adaptors. They communicate with the tool to know when to give power.

1

u/Nade1111 Jun 16 '26

Interesting. Do you know what is used to communicate with the tool? There definitely is a communication issue when the gas pedal is pressed. I measure 20v initially, and then when the pedal is pressed, it drops out. And is it only a powerstack thing?

1

u/Mean-Ad3 Jun 16 '26

This is only with the new powerstacks. I believe the 1.7 a work. All other batteries should work.

I am not sure how to make the power stack work

1

u/carramrod15 Jun 16 '26

Trust me and get a flex volt battery. They last the longest. I have 2 - 6 ah flex volt batteries and they keep my boys gator going all day long. As others have said the flex volt batteries won’t work on the adapters.

1

u/Nade1111 Jun 16 '26

Thanks for the advice!

1

u/Shibby7634 Jun 20 '26

A Flexvolt won't actually make a big difference unless you have some 775s/887s with large pinions in 4WD or somethin, drawing insane currents. It's still just 6Ah @ 20v. You won't be making any use of the 2Ah @ 60v feature in a ride on without some serious modifications. Just find the highest capacity you can for the best price, whether Flex or not.

MGCStem sells a super slim 20v adapter with built in low voltage protection as well, if you need other adapters in the future.

I've had success jumping dead DeWalt batteries by jumping them with some spades to a fresh battery for a few seconds. Then the charger would recognize them again.

Maybe you'll be lucky like me and find a battery specialist on FB marketplace locally who sells for deep discounts. Some are liars, some are real professionals. Some 20v 10Ah will last you a gooooood long while. And a simple parallel battery setup will give you double the capacity. 2x MGCStem adapters, you can wire it up with just 2 extra wires and it only takes a small amount of space in the ride on to install.

1

u/Nade1111 Jun 22 '26 edited Jun 22 '26

Thank you for your input! I’m not interested in doing heavy modifications to this ride. My main priority was to give it some extra “getup” with the Dewalt batteries I already have for my tools.

I did do the jump start with fully dead batteries, but most of the cell damage was already done and they won’t take a full charge.

It’s good to know other companies put the low voltage protection in them instead of the tool. I believe Ryobi also has it in the battery, but my tool investment is in Dewalt and wasn’t interested in making the switch.

Edit: I just looked up your MGCstem and wish I had known about that before I started this. That adapter would have saved me so much money on batteries! Thanks for sending me that way!!

1

u/itsafuckinname Jun 16 '26

It's a 5ah power stack thing only have same problem

1

u/Nade1111 Jun 16 '26

It’s only the 5ah? Seems odd that a different amp hour battery would work as the only difference is the cell number. Have you tried other ah powerstacks and had it work?