Thank you! Running a 30A variable speed controller on a grave digger with 40v Ryobi batteries and it rips! The kids are always nearly killing my expensive batteries. This will help!
Thank you so much, I've been having this issue and just ordered a 35amp low voltage cutoff as a remedy but you're right...a relay will just listen to what the cutoff says without transferring the voltage through it. Gosh I'm dumb
Thanks for the video! I know its been a couple years for you, but I was wondering if you could share how the relay is wired up? Maybe even a wiring diagram? I just ordered the same 5 pin model that you have. Also, does the existing relay on the board need to be removed?
I'm sorry I don't know how in the world I missed that diagram in the video. I got it now. Just to clarify though, when you say your relay board is not hooked up, do you mean the relay was de-soldered from the low voltage cut-off circuit board, or is it just bypassed by wiring it up as it shows in the diagram?
@@brandongreen7856 I thought you were speaking about the original toy relay board, none of the original electronics are used in my build. Everything else is hooked up as pictured or in the schematic
@VintageSpeedwerks no I'm just trying to replace the relay on the voltage cut off board and didn't know if the smaller amp relay that comes on that board needed removed or left in place. Thanks for the help!
@@VintageSpeedwerks so my voltage cut off switch is just like yours, but won’t take a 12 gauge. The 12 gauge is too thick. I can work in a thinner wire, but I’m a little worried about amps flowing and the thinner wires getting hot. Do you have any suggestions?
Hello, I'm planning to use a 4s lipo battery with my daughter car, can I use this same setup or do you recommend some modifications? Working voltage from a 4s lipo goes from 14.8 to 16.8v with a 80c peak discharge rate
Hi, I installed this setup after watching your video. The dewalt batteries runs nicely and it cuts on 16.5V as I've configured. But! It seems if I forget the battery in the car the cutoff boards draws some power and drains the battery completely. Is there something I can add to the setup to prevent the cutoff board to drain the last voltage out of the battery?
I’m having that problem I’m blowing the little relay on the cutoff switch. I see you’re using a 5pin is the 5th wire just a ground? Or would I be okay with a 4pin?
@@VintageSpeedwerks I’ve decided to change the board and go for a 30amp with an external display and buttons so we can set the cut off each time if we need to. Thanks :)
Could you please show the actual wiring in a way we could understand like what goes where and in what order? I look at your set up and it looks like a spaghetti bowl
1:48 The schematic should be pretty straightforward. If you're not sure how to read the schematic then it's best to not attempt this conversion yourself.
If you are watching this video, you are a great parent.
Thank you. All we can do is teach the kids improvisation.
Thank you! Running a 30A variable speed controller on a grave digger with 40v Ryobi batteries and it rips! The kids are always nearly killing my expensive batteries. This will help!
Thank you so much, I've been having this issue and just ordered a 35amp low voltage cutoff as a remedy but you're right...a relay will just listen to what the cutoff says without transferring the voltage through it. Gosh I'm dumb
Yes, usually those boards burn up quick without a relay
Do they not sell any boards with a better relay?
Stealing this for my robotics platform. I appreciate you
Thanks for the video! I know its been a couple years for you, but I was wondering if you could share how the relay is wired up? Maybe even a wiring diagram? I just ordered the same 5 pin model that you have. Also, does the existing relay on the board need to be removed?
It's in the video, should push pause.
My relay board is not hooked up, the extra volts work fry it
I'm sorry I don't know how in the world I missed that diagram in the video. I got it now. Just to clarify though, when you say your relay board is not hooked up, do you mean the relay was de-soldered from the low voltage cut-off circuit board, or is it just bypassed by wiring it up as it shows in the diagram?
@@brandongreen7856 I thought you were speaking about the original toy relay board, none of the original electronics are used in my build. Everything else is hooked up as pictured or in the schematic
@VintageSpeedwerks no I'm just trying to replace the relay on the voltage cut off board and didn't know if the smaller amp relay that comes on that board needed removed or left in place. Thanks for the help!
What gauge wire are you using? Great video!
12 I think it was
@@VintageSpeedwerks so my voltage cut off switch is just like yours, but won’t take a 12 gauge. The 12 gauge is too thick. I can work in a thinner wire, but I’m a little worried about amps flowing and the thinner wires getting hot. Do you have any suggestions?
Hello, I'm planning to use a 4s lipo battery with my daughter car, can I use this same setup or do you recommend some modifications?
Working voltage from a 4s lipo goes from 14.8 to 16.8v with a 80c peak discharge rate
I don't understand something. The 40 amp relay. There are 5 wires coming from it. Where is the middle wire going to? 87a
Usually it's.juat pass through power if I remember right
Do remember if the voltage drops like 1-2volts while under load? It seems to be tripping my cut off…
I don't recall that. Just.chsnge the setting
Hi, I installed this setup after watching your video. The dewalt batteries runs nicely and it cuts on 16.5V as I've configured. But! It seems if I forget the battery in the car the cutoff boards draws some power and drains the battery completely. Is there something I can add to the setup to prevent the cutoff board to drain the last voltage out of the battery?
I have mine hooked to the switch, so nothing is on until kid jumps in and hits on
Same thing happened to me 😭
I’m having that problem I’m blowing the little relay on the cutoff switch. I see you’re using a 5pin is the 5th wire just a ground? Or would I be okay with a 4pin?
Have to look at schematic and see. Might work without ground, might not
How do you know it will keep the stored settings? I have the same board and when I remove the battery it defaults to 12
It depends on the board, I've seen that some do some don't
@@VintageSpeedwerks I’ve decided to change the board and go for a 30amp with an external display and buttons so we can set the cut off each time if we need to. Thanks :)
@@screech925just got similar 30A boards, running M18 batteries, curious what you set your limits to. Thanks
Do you have a wiring diagram?
Lol, watch the video?
That relay is a "12v 40amp"... tell me that's not a problem with 18v Milwaukee batteries. 🤦♂️
....it's not a problem with DeWalt 18v.
Could you please show the actual wiring in a way we could understand like what goes where and in what order? I look at your set up and it looks like a spaghetti bowl
Your picture of the wiring doesn't make any sense man.- is what I'm saying
You mean the schematic? If that doesn't help ya, nothing I can do man.
1:48 The schematic should be pretty straightforward. If you're not sure how to read the schematic then it's best to not attempt this conversion yourself.
The relay in your link says 12v and in the video it looks like it says 20vdc, is it ok to use a 12v relay in a build like this?
I would recommend a 24V relay, you might get the coil burnt at 20V on a 12V relay for extended time
I think I saw 28v on it I’m confused cause now I got a 12v 40a