Milwaukee M18 Kids 12V Jeep Battery Upgrade
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- Опубліковано 28 сер 2024
- Remember, any alterations to a ride-on car will void the warranty. Also be sure your kid can handle the extra speed!
Update on low voltage dropout problems: • Milwaukee M18 Kids 12V...
Kids 12V Jeep: amzn.to/3PaR07Z
NOTE: THE SELLER CHANGED THE DESIGN ON THE BUCK CONVERTER I USED, AND IT NO LONGER CAN SUPPLY ENOUGH CURRENT. If you have already bought the 2-pack, the easiest fix is to wire them both in parallel.
This is the original 300W buck converter listing *that is actually only 120W*: amzn.to/3JH0uqr
Buck converter enclosure STL file for 3D printing: www.thingivers...
Milwaukee battery adapter: amzn.to/3BPHy6G
Butt splice heat shrink: amzn.to/3bCUnH5
Connectors: amzn.to/3A7HjCJ
Heat gun nozzle set (fits M18 heat gun): amzn.to/3bCUxhF
Computer fan: amzn.to/3CWdO7S
If you attempted this conversion and are having problems with the voltage dropping out under uphill loads, it's due to the buck converter manufacturer changing their design without updating their product listing.
My co-worker (and fellow engineer) recently bought the same ones I used from Amazon and ran into problems with output power. He bench tested them and found that my spare one I lent him could do over 14A at 12V and maxed out his test equipment, while the new one he just bought could only handle outputting 10A at 12V.
The solution is to use both buck converters in that two pack wired in parallel between the battery and the vehicle, or to use a different and more powerful buck converter.
When I grow up I want to be a cool dad like you
Blaise, I'm pretty sure you're already a cool dad! 😄
@@DoresoomReviewsso
Perfect, thank you! Best ride-on conversion video I've seen, and I've seen quite a few. Killed one ride-on completely with a straight up 12v -> 18v conversion. Reducing the voltage is definitely helpful.
Glad you liked it!
does this Battery give more power than a 2ah battery or even 5 ah? I did the switch and my sons jeep with a 2ah battery isn't that quick! . Let me know what you think@@DoresoomReviews
finally a highly detailed DIY video and buy list for parts! awesome stuff thanks
I converted my son's pw jeep to use a Makita battery. Bought a power wheels adapter off Amazon so it would just plug into the jeep, and then modified a Makita USB power source to connect to the battery.
I should've stepped down the voltage or at least a controller. It was a rocket but the surge of power when the pedal was depressed eventually stripped the gear boxes.
I considered upgrading the motors and gear boxes, but he's getting to the point where we'll just look at entry level gas machines.
I got my daughter a Jeep(knockoff) from Amazon and I hooked my 12.0 m18 battery to it. Thing ran great for a while, definitely more power and was quicker, especially with a passenger. Popped a cap or 2 on the control board. Ordered a new board. Never thought of using a step down but always wanted to diy 4 brushless into each wheel.
Oh no! At least it's something replaceable. The buck converter should definitely help with that. Also, be sure not to drain an expensive 12Ah completely, since the low voltage protection relies on an M18 tool to stop drawing power.
great vid! you can actually wrap mountian bike tires around the wheels. glue them down and screw them in. the traction is insane
Great idea! I actually have some mountain bike tires I bought to do exactly that! 😂
I also 3D printed some TPU treads that have awesome traction, but they were a stretch fit and slip off too easily. Screws or adhesive is my next step!
Nice video. I already converted our Dyson vacuums to use m18 batteries and it’s been great. I ordered the parts you left in the comments. Great work. Thanks.
I installed the battery adapter and voltage regulator. The power wasn’t there. I just deleted the voltage regulator. So strait 20 volts to the stock wiring and this jeep has some pep in its step. Only drove it around for about 30min. Nothing seemed to be damaged. All the electronics still work.
I recently discovered the buck converter manufacturer changed their design without updating the product listing. If you bought the two pack, try setting both to 14V independently, turning their current adjusting screws all the way up, and wiring them in parallel between the power tool battery and the vehicle.
I have just bought the same jeep for my daughter cannot wait to do this 20 mile range is insane 😂😂
I use 2 different methods to determine the speed they go. You can put a gopro on and in the quik app to edit you can turn on the speedometer and it'll show on your video, I also have downloaded a speedometer app on an old phone and put it in the car.
Just ordered the parts, thanks for such a detailed video!
I believe these batteries do have the voltage cutoff in the battery itself.
I have a Milwaukee flashlight with only positive and negative prongs, so it can’t communicate with the battery at all, and still will shut off when it’s low.
This is great. For some reason when hook mine up (f150 raptor), and have 14-15v, the full speed mode hardly crawls, but reverse and slow work just fine.
That's odd. Are you able to hook up a multimeter and get a voltage reading while it's bogging down?
I just tested it. Looks like it bogs down immediately to live with 4 volts, but slowly climbs up to 14 v (like 5 seconds). Any idea why I bogs down so much at first?
@@clarkvargo1066 my BCP Jeep is doing this exact thing. 18v Ryobi battery hooked up same as this Video.
Did you get this figured out and does the truck have a soft start?
@@clarkvargo1066 did u figure it out .. mine too
Thanks, doing the same thing, and usimg your file, thx so much man, daughter is going to be happy
Question, what size of fan are you using 12v?
Have fun! You might have to take up jogging or biking to keep up with her after the upgrade though!
I used one of these 80mm computer fans: amzn.to/3FdVLL2
@@DoresoomReviews ahaha :o,, thanks!
@@DoresoomReviews hey man i need help with the enclousre, I want to print it, but the scale is really small 3mm.. what scale is the right size? z y z axis, sorry kind of new to printing world, but i notice when i hit slice 0min to print it, because is so tiny. ahah
do i just add 80mm to Y axis?
This is how fast it felt as a kid but in reality it was a slog lol. I remember my power wheels quit working after driving it on grass mustve been the morning dew
Best video I have seen for upgrade.
Great conversion, especially as you kept it removable. I wonder how this would handle riding lawn mower wheels with proper rubber, maybe too much extra weight.
Thanks! I bought some 12" bicycle inner tubes to stretch over the 14" diameter wheels. It seems to add a lot of traction over the bare plastic for driving on concrete. They need some adhesive though, since they fall off after about a mile. Plus I have concerns about their durability. Maybe I'll try cutting up some actual off road bike tires and epoxying them on next.
@@DoresoomReviews rubber mat (thin door mat or ute/truck tray mat) attached with a construction adhesive rather than epoxy (too hard and brittle). Silane modified polymer (SMP or MS Polymer) sticks to most things.
Yeah, I was planning on a flexible adhesive. Guess I should have clarified rather than saying "epoxy." Thanks for the suggestions!
I have the same setup with a dewalt 20v 10ah but I get a voltage drop when the accelerator is pushed. And it’s set to 14volts 300w
I had a friend attempt this conversion recently and he ran into similar problems. The manufacturer of the buck converter changed their design without updating the product description, and the new ones can't supply enough current. If you bought the two-pack, try wiring them in parallel between the DeWalt battery and the vehicle. That solved the problem in my friends' case.
I tested the theory before going out and getting the Milwaukee battery and adapter stuff. I installed a second battery that I had as a spare in series with the original. Then I hooked it to the buck step down controller (same as yours). So I have 24 volts input and set it to 14 volts output. It was a minuscule improvement. The Jeep barely makes it up a slight incline on an asphalt driveway. On a grass incline it practically comes to a stop. It’s a HoneyJoy Jeep. Original battery is a 12v 7aH battery.
Why does your Jeep fly up hills and this one is a slug? I measured the voltage while testing it and the voltage controller held steady at 14V. So, it wasn’t starving for power. Current control was turned to max.
What voltage do you run yours at. I did not want to go higher than 14v.
I have mine set up for 14V output, and it drops to about 13.75V on a steep hill using the M18 battery and buck converter. Using the original lead acid battery it was dropping to 11V on hills. The Jeep I have is a Best Choice Products model rated for 3.7 MPH by the manufacturer.
Do your lead acid batteries state their max current output? 300W at 14V is over 21A coming out of the buck converter. On the battery side of things, you're looking at a minimum of 12.5A at 24V without accounting for efficiency losses. Since you have the batteries in series, then they each need to be able to put out that much since voltage adds instead of current. M18 5Ah batteries can output well over 30A easily. To hit 300W at 18V, the Milwaukee battery only needs to output 17A.
I'm not saying for sure that's the problem, but I'm guessing it's the current discharge rate of the lead acid batteries that are limiting performance. Other commenters have reported low performance on different models of jeeps with this same setup though, so I can't say for sure that the M18 battery will fix the issue.
Thanks for the reply. I got it figured out…… the remote control was stuck in the low speed setting.
I had no toddler in the car. I was testing it with the remote. Oops. But now it kicks butt at 14 volts. In fact , a little too fast. I think 13.5 steady volts will be fine. 👍
I recently discovered the buck converter manufacturer changed their design without updating the product listing. If you bought the two pack, try setting both to 14V independently, turning their current adjusting screws all the way up, and wiring them in parallel between the power tool battery and the vehicle.
Also, to the OP, how's the jeep after you've used it with this mod? Are the gears still ok? I'm wondering if the extra punch of the lithium batteries stripped the gears over time.
The Jeep is still running great. No problems at all.
Sweet! Cool all around idea.
I did this but when my daughter is going in grass or little hills the jeep cuts out. Would it be due to to small of wiring? Thanks
Sounds like the motor is starved of current for higher torque situations. Possibly due to too small of a wire gauge, or if the buck converter current setting isn't turned up to the max setting.
I recently discovered the buck converter manufacturer changed their design without updating the product listing. If you bought the two pack, try setting both to 14V independently, turning their current adjusting screws all the way up, and wiring them in parallel between the power tool battery and the vehicle.
Great video subbed! Question. My son has a Grave Digger that runs on a 24v power wheel battery. I’m wanting to convert it to my Hart 20v or 40v battery system. Which would be easier or safer?
I'd try the 20V first, just by hooking it straight up where the original battery connects to. It will probably run a little slower though. If it's too much of a loss of speed, then you could look into a 40V to 24V buck converter.
PLEASE HELP: I did everything the same, put it to max current and I’m at 15 volts but it loses power with my son in it and in grass. Voltage drops down to like 4-5V. What do I do? The main difference I guess would be my adapter has a on off switch with a 30a fuse.
The switch could be a current bottleneck. Also if you're using thinner wires it could contribute.
@@DoresoomReviews using 12 gauge wire throughout. Switch says it’s 250VAC 8a/12.5a.
@@DoresoomReviews should I put a dummy wire in place of the switch just to see if that does it?
@@DoresoomReviews what else could be the bottleneck? Still drops voltage on grass
I'd try bypassing the switch first. Also, is it the same model of jeep? And how heavy is your kid? My daughter is somewhere in the 35-40 lbs range.
When I download enclosure for the buck converter it's extremely small.
What should I scale it up to?
I designed it in inches, and your slicer imported it as millimeters. Scale it up by 2540%.
@@DoresoomReviews thank you, I figured it exactly after I posted the question :D
That's how it always works! :)
Perfect can't wait to do this 👍🏾😂
So installed but going up hills it drops voltage to like 2.3 n won’t go .. I set it to 14v coming out the stepper .. not sure what happening
Sounds like you're starved for current. Turn the current limiting knob all the way up and see if that helps.
@@DoresoomReviews I didn’t and it just keeps rotating and clicking noise .. it never stops turning
A few other viewers have reported the same issues, but I haven't been able to reproduce them unfortunately. You may want to try a 400W or 500W buck converter to see if that resolves the problem.
I recently discovered the buck converter manufacturer changed their design without updating the product listing. If you bought the two pack, try setting both to 14V independently, turning their current adjusting screws all the way up, and wiring them in parallel between the power tool battery and the vehicle.
So question , I’m new to all this but if it’s “12v “ why u say it’s 14v open circuit ? I have a 12v one for
My daughter and not sure what to set the stepper to .. any advice will be great .. thanks
Batteries will read a higher voltage open circuit than under load. The 12V rating is for a loaded condition where the voltage sags. All batteries work that way.
@@DoresoomReviews so set mine the same video to 14v?
That's what I would do.
Anyone else have problems with voltage drop off? I have this same jeep and when it gets in the grass it drops to 4v and won’t move. Using good HO batteries
I recently discovered the buck converter manufacturer changed their design without updating the product listing. If you bought the two pack, try setting both to 14V independently, turning their current adjusting screws all the way up, and wiring them in parallel between the power tool battery and the vehicle.
The battery takeoff came with a fuse on the positive wire. Should I keep that on? I don't see that on yours.
I took it off, but it's probably fine to keep it on.
I have the same jeep haha. Im planning on putting a quad motor into it 😅
I did this and it seems to work. But the radio and startup sounds are not completely working. Any ideas why?
I'm not sure. Maybe the buck converter output is noisy? Sounds still work fine on mine.
Anyone used this setup on a dual battery Costzon? I’m getting good power to start with but it fades really fast.
Hey great video, I had a question, about charging the batteries, so for charging the battery should you remove it from its place and charge it using the drill charger itself? Or is there a way to charge it while it’s in place and installed on the jeep? Without removing it
There's not a way to charge the power tool batteries in place. It's pretty easy to just pop them out to charge though.
The problem is I don’t have a charger, I only have the battery, I was thinking why can’t we just use the charging port for the car itself to charge the drill battery, I mean it goes through the same motherboard and system, so I was thinking why can’t we just the regular car charger and charging port to charge it
Lithium ion battery cells need a charge controller, unlike the lead acid battery the car comes with.
Hey there great video!!! I’m having a problem with the amps, I think… the voltage is set to 14.5 v and it goes for a second but any time it encounters a hill or more weight she basically dies. I have the amps turned up all the way as well. Please help!!!
I was just going to ask the same thing, I hooked mine up tonight and encountered the same problem
On flat roads it’s starts slow and then essentially hits the turbo LOL and takes off but we have to keep it on flat roads. Please help!!!
you need at least something that can provide 20A continuous
hey i had this issue with the same 300w 20a buck converter basically wouldnt run under load. i bought a larger buck converter 30amp and that solved this issue, i bought the sealed buck converter thats already pre stepped down to 12v which for my little one is more than enough hes not old enough for faster speeds. i just installed mine a little bit ago so i havent fully tested outside until tomorrow
I recently discovered the buck converter manufacturer changed their design without updating the product listing. If you bought the two pack, try setting both to 14V independently, turning their current adjusting screws all the way up, and wiring them in parallel between the power tool battery and the vehicle.
Thank you for this helpful video! I have a Toyota Hilux and its 4x4, do you think I need a higher wattage step down module? I was looking on Amazon and they have a 500w version. Appreciate your time and have a great day!
Yes, I'd go with the 500W buck converter if you have 4 independent motors. Good call!
@@DoresoomReviews Thank you!
Do you have recommendations for a parental remote? We found one on the curb. We just don't have a parental remote. It usually comes with one. Know how to replace?
This LOOKS like the same remote that came with mine: amzn.to/3ILQBrK
No guarantees it will work, but it's cheap enough that it's worth a shot.
Thank you! We got one before I saw this comment and it'll pair but it won't move it. No clue. Will definitely return and try this one! Any suggestions for a battery charger lol cause I ordered a battery but didn't think about charging it 😅 luckily I got the right battery!
Does the remote still function following this mod? As well, same parts if I want to utilize a Dewalt 20v?
Yes, the remote still works. As long as you buy a DeWalt battery adapter instead of a Milwaukee one, it should work fine.
A lot o these buck converters have built in low voltage cut off btw
Good point - the 300W one I found didn't though.But as long as I pull the battery after my daughter is done driving, no issues so far.
How many turns on the CC (current) I’ve gone clockwise a few times and I’m a little nervous to keep turning it. Will it stop turning when it’s at the max current setting?
I didn't keep count, just turned it 3-4 times maybe. I didn't hit a stop.
Thanks!
Is there any way I can purchase the enclosure from you? I don’t have access to a 3d printer.
Sorry, I don't plan on selling them. Check your local library, it's possible they have a 3D printer available to use. Or you could make it out of wood or acrylic instead of 3D printing.
I just recently found a Yamaha Grizzly 12v somebody was throwing out. I want to upgrade it for the kids and for me to ride on with my daughter who is too small to drive it herself. The wires were stripped and tied off with wire nuts. No battery. Any tips?
If it's designed for a 12V battery, you should be able to copy what I did in the video exactly.
@@DoresoomReviews I beleive it is I'm not entirely sure. I'm trying to be safe rather than sorry lighting up the neighborhood with flaming plastic.
Would you sell this kit already made? Since I'm not tech savvy? Please let me know my kids will be forever happy and thankful
Sorry, I don't have plans to sell any kits.
If the battery dies can I add another charged battery to it or would that over heat the power wheels ?
Just swap another one in and keep going. But the longest my daughter has driven it at once was 3 miles continuously, and it was hovering between 1-2 bars left out of 4 on a 5Ah battery. I'd plan on swapping batteries every 4 miles so you don't completely kill one by overdischarging it.
Could you show how it’s actually hooked up in the car please
🙏
The only connection to the car is power. So unhook the lead to the battery, cut the connector off (after marking positive and negative!). Then solder on new terminations that match your buck converter and connect.
How high of a voltage can you go to before the electronics will fry? I want to do this mod, excellent! Reading the comments, you haven't gone beyond 14v?
Yeah, 14V is all I've done. Still working great! Unless you go through and inspect each components' design specs in the boards, it's kind of a crap shoot when applying higher voltages to it.
Don't run more than 1 battery unless you're wiring them in parallel. Just blew my son's tractors controller board seeing if it would run 36v
Will it being higher voltage batteries fry anything? what would a stronger battery mess up?
That's why I used the buck converter to step down from 20V open circuit to 14V open circuit. I didn't want to risk burning out the motors or frying any of the circuit boards. If you wanted to be even more conservative, you could set the voltage to 13V, which is the open circuit voltage of the stock battery that comes with it.
Will it drain your battery completely if you run it dead?
Yes. I keep an eye on charge level and swap batteries after about 45 minutes just to be safe.
Is anyone here able to help me with what % I should scale I should print the STL file for the enclosure? The model is not the correct size and needs scaled.
I designed it in inches, and most slicers import it as millimeters. Scale it up by 2540% and you're good to go.
My daughters is this fast with the factory 12v battery. I’m trying to figure out a way to bypass it to make it slower. Lol
You could try a 6V battery, but it's possible that will make it too slow. For DC motors, speed is proportional to voltage.
Just purchased the m18 adapter and step down board for my kids Aosom Jeep purchased from Amazon. It has a remote. Went to wire the adapter and board into the main power feed coming from the old battery, and all it does it send power to the lights. No starting noise, no power to the wheels. Not sure what’s going on, any ideas?
Did you adjust the current and the voltage limiters on the buck converter? Turn the current setting all the way up, and set voltage to 13-14V using a multimeter.
Also check to be sure polarity is correct, but if the LEDs are illuminating I suspect it is.
I didn’t check, and did adjust the settings with no change to the unit. To add another variable to my issues I unwired the converter and wired just the m18 adapter direct to the jeep and just lights, still no sound effects, but the jeep would only drive foreword, would not engage in reverse.
Those are strange symptoms. Does it work normally on the original battery?
Yes runs normal on stock battery, but I thinnnnnk I know the reason for the strange symptoms. So stock battery runs on 14V and 11amps, my genius self only ordered one m18 adapter, meaning the jeep was only getting 18V 5amps (battery I used when testing). Only half the amperage… so guess I’m ordering another one
The Amp-Hour designation on the battery is for energy storage capacity, not max current output. So a 5Ah battery can output 1A for 5 hours. Or 5A for one hour, or 10A for 30 minutes, etc. Those M18 batteries can dump a lot more current than 11A. It's very weird that the M18 battery connected directly to it couldn't make it work. Although the car's board might have high voltage input protection? So it may really be that the buck converter can't keep up.
But the low current symptoms I was seeing was not enough torque to go up steep hills, not inability for the vehicle to move at all. Is the buck converter the same 300W one that I linked to? I had a friend try it with a larger two seater 12V vehicle, and he said his still has trouble going up hills with two kids in it. Wiring two buck converters in parallel might do it, but I'm not sure.
Is there any way to do this exact setup but instead with a Dewalt 20v XR battery?
Just buy a DeWalt battery adapter instead of a Milwaukee one - that's the only change needed. DeWalt 20V Max is really the same voltage as Milwaukee M18. Both have multiples of five 3.6V cells in series in their batteries.
Voltage cut off is in the tool
Thanks for confirming. I usually swap batteries after 1-2 miles just to be safe.
I dont have a voltage meter. How can i adjust the CV?
The best solution is to just get a multimeter. They're very affordable for basic models: amzn.to/3VyOQUe
Or if you have the same model jeep I do, the "radio" LCD displays the battery voltage. You could turn the voltage potentiometer all the way CCW, hook it up to the jeep, and slowly adjust CW until you reach the proper voltage. Initially the jeep might not turn on though, so you'll be without any insight for the first little bit.
I have a jeep that’s my daughters n sadly had water go all into battery is there a recommendation how to go about w the repair ? Not really a professional In this type of thing 😂
First, you need to put it in a wading pool full of rice... 😂
Honestly I have no idea - you may want to contact the manufacturer and ask.
Do you know of how I could send up 18v to the motors but keep only ~12v going to the electronics lights/radio?
You'll likely burn the motors out or strip the plastic gears if you try that.
@@DoresoomReviews ok if upgrade the motors & gearboxes i can avoid that, then do you have any thoughts on how to control voltage to other electronics?
You'd have to figure out where power gets sent to the circuit boards vs the motors. If it's split off of the main battery line it should be easy. If it's a board-level split then it will probably be impossible.
@@DoresoomReviews i have the same jeep as yours, i believe its a board level split... you run yours at 14v right? is that the max everything can handle?
I have the same buck converter as you, For the current you said to turn it clockwise? Mine just keeps turning and turning and turning and doesn't seem to be a limit how do you check the current with a voltmeter?
I have a bunch of Milwaukee M18 batteries, but as I gather they don't have UVLO (under voltage lockout). I'd definitely be running these batteries until dead, so I'm wondering if anyone has figured out an easy way to protect the battery cells?
And any theory on whether Makita batteries have UVLO built in?
I guess I see a low voltage disconnect in my future, but it sure would be nice if one of the batteries I have (Makita, Milwaukee M18 and Rigid) don't need one.
I've done a 3+ mile drive with my daughter and still had a few bars left on a 5Ah battery. I just disconnect and recharge immediately after she's done driving and haven't had one drain completely yet. But if you want to pass everything through a low voltage cutoff board, you could put something like this between the battery and buck converter: amzn.to/3y671Wu
You'll have to have a fairly high rated current, I suspect at least 20A. Also know that a board like this will continue draining the battery after it stops supplying power to the vehicle. So you'll need to disconnect the battery right away after it cuts off due to low voltage.
@@DoresoomReviews Thanks for that. I'm not sure that's the board to use though, apparently it doesn't keep its settings once removed from power. At least according to the comments in the reviews. So every time you change the battery you'd have to configure it again. Good ol Chinese gizmos. I randomly have the Victron BP-65 low voltage disconnect left over from another project, it claims a capacity of 65 amps and remembers its settings. Relatively pricey though at $40. I'll probably give that a shot.
Amazing that you're getting that much range on a 5ah battery. The stock SLA battery claims to be 12ah @ 12 volts (144 watt hours), and a 5ah drill battery @ 19v is 95 watt hours. I don't think I get a mile of range on my stock SLA battery, but of course lithium has more usable capacity, and I guess a lot more kick. And lord knows what the real capacity of that SLA battery is. And I'm on dirt 100% roads.
Ah, I missed that that board doesn't retain settings. Good catch!
Dirt roads will likely cut down on range, almost all the driving we do is on concrete sidewalks. I couldn't believe the runtime either after the first time we did a longer drive. I stopped to check the battery a few times along the way too. I used the MapMyRide app the second time to confirm how far we had gone.
@@DoresoomReviews That's amazing. Can't wait for the drill battery socket adaptors to arrive so I can try this. Thanks so much for posting this vid, great info.
You got the websites for the setup your running?
I've got links to all the parts in the video description.
Can you make and sell me one? I could buy everything but making the 3D print thanks
Sorry, I don't plan on selling them. You could always check if your local library has a 3D printer you can use.
vid was sup helpful. def will watch agn.
Hit the gas? Don’t you mean hit the battery? 🤣🤣🤣
"Hit the switch and complete the circuit" just doesn't have the same ring to it! 🤣
Do you have a conversion kit that you would sell me? Or what would you charge to build and ship one of these to Mississippi? I have plenty of M18 batteries, just not the time or experience to put this build together. (Please don’t laugh at me)🤣
No, sorry I don't plan on selling them.
anyone know what size fan he used a 120mm or a 80mm
80mm - links are in the video description
Having an issue with this exact setup. Under load the voltage drops below 4v. I have the current dialed all the way up but I'm thinking the 20a limit on this buck converter is the issue?
Same exact jeep? My kid weighs around 35 lbs, is yours significantly heavier?
I run it at 14V, so 20A is 280W. If you're running at under that voltage, its power output will be lower if it does max out at 20A.
@@DoresoomReviewssame size kid, same jeep. Only variable is the Ryobi Battery. It starts off normal and then stops after a few seconds, especially on grass.
Ive cut out the thermal fuses just to eliminate that possibility but with the voltage dropping so hard at the buck converter under load I have to assume that's the problem.
I ordered a 30a buck converter to see how that fares, I'll report back when I get it in.
@@F01EY did the higher amperage buck converter do the trick?
Yes! Works perfectly now. That was the culprit.
@@F01EY awesome, thanks for the reply! I’ve got a 400W in the mail for tomorrow. 🤞
This is cool!!!
Is this a Best Choice brand jeep?
Yes, it's this one: amzn.to/3PaR07Z
I think we have at least 300 miles on it now, still doing great!
Why not actually use the drill motors as well instead of converting the system to use batteries only ?
A brushless drill setup would be way more reliable for a powertrain as well :)
It's much easier to just do a battery swap. I'd have to modify a lot more on the jeep to use drill motors to power it.
Waste of time and a good battery. Bypass the oem speed controller , wire the shifter into the new speed controller, add a 12v buck to the brain for lights and such
Go for the low voltage cut out my father in law killed a 9 ah battery
Yeah, I only run 5Ah batteries in it for that reason!
Why not just use m12 batteries? Anyone used m12?
M12 is 10.8V open circuit voltage. It will cause the jeep to run slower than the standard batteries do.
@@DoresoomReviews ahh thank you! I just bought the stuff to do m18 to 12v conversion.
Mph?
Covered that at 6:35
I did this and it burned up the powersteering 12v motor lol
Even with the buck converter? Or did you wire it straight to 18V?
Curious, would you make and sell me one of these now that you’ve done it once? I have the jeep and the m18 battery, looking for your set up to plug n play
No, sorry - I won't be selling these. You could probably find an Etsy seller to 3D print the enclosure for you thougb.
Flex seal for the tires lol
I'm working on some 3D printed TPU tire covers!
Cut the middle out of some old atv tires and wrap them on.
That's a good idea. I had planned to do exactly that with some bike tires, but then went down a rabbit hole of 3D printing my own seamless TPU treads. They work well for traction, but getting them to stay on the wheel without an adhesive is proving to be a challenge.
Word of advice. Don't run 2 m18 batteries in series. It'll blow something. LOL
Ha, 36V into a 12V motor? Poor thing didn't have a chance! 😂
@Doresoom Tool Reviews there weren't any labels on anything so I said what the hell and gave it a shot to see what it could take. Lol 18v is fine in parallel but once that voltage goes up then it's done. Lol
This video is too complicated for a noob like me haha
Everyone's got to start somewhere! It can seem intimidating at first, but soldering and wire terminations are pretty easy with some practice! 😊
Can you sell me one?
No, sorry I don't plan on selling them. I'm sure you can find an Etsy seller to 3D print you the enclosure if you want.
i have this same vehicle that i want to upgrade... can you share your email so i can ask you some questions?
You can just ask here.
@@DoresoomReviews im curious if i can use a 20v battery & lower it on the heat sink like you did? Or do i need a different heat sink for a 20v? Does your remote controller still work?
@@DoresoomReviews also does the different gear function still work?
20V max batteries are actually the same voltage as 18V nominal, so it will work fine. Remote still works too .
@@DoresoomReviews have you had to replace any gears since youve made this modification?
Would the full 18v be a problem?
With the number of people commenting here that the full 18V burned out their circuit boards or motors after a while, I'd definitely use the buck converter to step it down.