I'm looking at a converter to charge a MAXOAK CPAP battery pack (power bank) from my 12v motorcyle battery while I am riding (so that I can use the CPAP during off-grid camping trips). The power bank's capacity is 297Wh/82500mAh@3.7V. Its input is 25.2 V 3A. It has various outputs depending on what CPAP machine you are powering. One of the outputs is 24V 4A, which is what my machine uses. Would this converter work to charge the power bank with my motorcycle battery while I am riding? It would eliminate having to carry the power bar that comes with the MAXOAK on the trips and looking for AC power to charge the power bank. The power bar is 120v IN to 25.2 V 3A out.
I bought leds from AliExpress with a usb port for in my car. I have a headunit with usb ports but after connecting the leds i noticed that the headunit would cut power from my carplay usb and the leds would constantly get dimmer. I looked at the needed voltage and found that its a 24v input😐 can i wire the 12v from my cigarette lighter plug to the dc dc booster so i can get 24v for the leds?
my van has a very large 155ah 12v AGM deep cycle battery. My alternator is 160amp. with my van running I can run 13amp 110v applicances consistently. I am wondering if there is some way I can weld using 1/8 rods with a 12v to 24v step-up rated at 480amps somehow since many have been able to weld using to sitting 12v batteries in series?
Hi there, The way you have the motor running, how long can you run it for, without it over heating. Would it be ok to run it for 8hrs for instance?. Thankyou
The motor was a 24 volt water pump. There are 3 conditions for it to run long term: correct voltage, water to cool it and a 100% duty cycle. This pump meets all 3, but you have to look at the specs of your pump.
Hi one question I have 2 LED bars in my van But the led lights are 24v How or what I need to do to be able to turn them on Do I need a transformer or how I can make them work
In all seriousness you need to find a friend that understand electricity well. I know a guy that burned up his car with a miswiring; it's easy to do. Transformers do not work with DC. This converter is a work of magic, because it converts DC to AC, runs that through a special transformer, then converts the AC back to DC with very low losses. OK. What **I** would do is buy a DC-DC converter that will handle the amps of BOTH bars plus a wide margin (+50%). I would put fuses on BOTH sides of the converter. The converter needs to be where it can get lots of moving air/cooling. The wiring supplying the converter and lights would be enough to handle the amps input (more than 2x the total output) and amps output to bars. I would spend lots of time making sure the wires are run where they are not going to get cut or pinched, and I solder all connections. As you can see, this is not a trivial thing. Find a friend who knows electricity, buy a pizza or 3.
Wow looks like a lot of work What happens is I bought a van with Rechargeable batteries with accessories like lights small ac unit and all that But I am removing alla of it but I was thiy about to keep the 2 long LEDs So they didn't work when I disconnected all the batteries transformers and all that But I just found out the lights are 24v So if is gonna be a lot of work I just gonna remove the lights
Great video, I am going to try to use one of these to boost the rpm of a 12 volt blower motor by sending 20 volts to it, do you think it will work or am I wasting my time.
If you send more voltage to a motor than it is rated for, the current will rise causing a rise in temperature. Since most motors are operated near their max temp, increasing temp will likely shorten the motor's life by a lot.
If the motor is a 24 volt motor and you start at 12v and go to 24 volts, it will probably run faster. However depending on load, motor design, etc. you can damage it.
@@tsbrownie Sir the motor I'm referring to is a 12 VDC. Quick info, my old Snap-on wire feed needs a boost. I've clean and and used low temp. grease. The motor is very inconsistent it bogs down and speeds up.
Hello Mr. I just watched your video and it really is very interesting. I have a 12 volt 110 watt solar pump. I would like to use a 24 volt solar panel and a 24v12v 20 Amp converter (240 watts) to power the pump. My concern is the section of electric cable to use. The well is approximately 15 meters deep. I don't know if I can use 1.5mm, or 2.5mm or more electric cables. I don't want to have an overcurrent for the pump. Thank you in advance.
Since I can not see what you are doing, I can only guess. You need to verify for yourself. 12v 110w means about 9.2 amps. THEORETICALLY, a 24v 5A panel would work with a very efficient (low loss) 24v to 12v converter. I would go bigger if I could afford it. In MY area 1.5mm wire is rated for 13A, 2.5mm for 18A. Personally I always go with a bigger wire size because of power loss at low DC voltages from resistance is significant. If the pump is 12v DC, and the inverter puts outs 12v DC it should not have an over-current issue. Wires can not add current, they can only take it away. If you are using wires as resistors to lower current, that's not a good idea.
@@fromtheflightdeck252 They seem to be well regulated, but I've not seen the circuit diagram so I can't say for sure or how it's done. I'm not a doctor nor familiar with CPAP tech so I won't venture a guess on it. They are relatively cheap and it might be worth trying it out for other uses to see if it will work for you.
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Was looking for a review for this. Will now order it to put in a portable speaker with a 200w 12v-24v amp and two 180w 4ohm speakers
I plug mine in and not getting any output .going through a cigarette lighter in car to step up to 24v .Not sure why not getting no output ?
What is the input minimum voltage? Do you have it wired correctly? Is it a step up or down?
@@tsbrownie Its a step up from 12v to 24v 10amp 240v .
I did check the input ,there is 13v but nothing on the output .
@Robo sounds like it's bad. They are not tricky, they work or not.
@Robo Is it a 12 to 24 or a 12 to 240?
I'm looking at a converter to charge a MAXOAK CPAP battery pack (power bank) from my 12v motorcyle battery while I am riding (so that I can use the
CPAP during off-grid camping trips).
The power bank's capacity is 297Wh/82500mAh@3.7V. Its input is 25.2 V 3A. It has various outputs depending on what CPAP machine you are powering. One of the outputs is 24V 4A, which is what my machine uses.
Would this converter work to charge the power bank with my motorcycle battery while I am riding? It would eliminate having to carry the power bar that comes with the MAXOAK on the trips and looking for AC power to charge the power bank. The power bar is 120v IN to 25.2 V 3A out.
I don't know about CPAP machines or the output from motorcycle generators. Those are 2 of several critical considerations.
I bought leds from AliExpress with a usb port for in my car. I have a headunit with usb ports but after connecting the leds i noticed that the headunit would cut power from my carplay usb and the leds would constantly get dimmer. I looked at the needed voltage and found that its a 24v input😐 can i wire the 12v from my cigarette lighter plug to the dc dc booster so i can get 24v for the leds?
I can't do a diagnosis from afar, but in theory, if you need 24 volts DC output from a 12 v DC input, these things can supply it.
How about i use 12V 5A battery, can i have an output of 24V and 3A, i have seen this item with 3A output at 24V
I can't say for sure, but with the one I had, 12v 5 amps in would output about 24 v and a little over 2 amps.
@@tsbrownie Anyway, is this device have reverse polarity protection? or not
Good converter. Should work with Resmed CPAP machines for those that camp or RV with those portable battery "generators"
thats what im looking at to charge my flashfish 330 generator
Link to item?
my van has a very large 155ah 12v AGM deep cycle battery. My alternator is 160amp. with my van running I can run 13amp 110v applicances consistently. I am wondering if there is some way I can weld using 1/8 rods with a 12v to 24v step-up rated at 480amps somehow since many have been able to weld using to sitting 12v batteries in series?
I don't have any experience with that. Perhaps someone else can chime in.
Hi there,
The way you have the motor running, how long can you run it for, without it over heating.
Would it be ok to run it for 8hrs for instance?.
Thankyou
The motor was a 24 volt water pump. There are 3 conditions for it to run long term: correct voltage, water to cool it and a 100% duty cycle. This pump meets all 3, but you have to look at the specs of your pump.
Hi sir. May i use that on my tb21 12-24volts mini amplifier?
I can't say. I am not familiar with the tb21.
Hi one question
I have 2 LED bars in my van
But the led lights are 24v
How or what I need to do to be able to turn them on
Do I need a transformer or how I can make them work
In all seriousness you need to find a friend that understand electricity well. I know a guy that burned up his car with a miswiring; it's easy to do. Transformers do not work with DC. This converter is a work of magic, because it converts DC to AC, runs that through a special transformer, then converts the AC back to DC with very low losses. OK. What **I** would do is buy a DC-DC converter that will handle the amps of BOTH bars plus a wide margin (+50%). I would put fuses on BOTH sides of the converter. The converter needs to be where it can get lots of moving air/cooling. The wiring supplying the converter and lights would be enough to handle the amps input (more than 2x the total output) and amps output to bars. I would spend lots of time making sure the wires are run where they are not going to get cut or pinched, and I solder all connections. As you can see, this is not a trivial thing. Find a friend who knows electricity, buy a pizza or 3.
Wow looks like a lot of work
What happens is I bought a van with
Rechargeable batteries with accessories like lights small ac unit and all that
But I am removing alla of it but I was thiy about to keep the 2 long LEDs
So they didn't work when I disconnected all the batteries transformers and all that
But I just found out the lights are 24v
So if is gonna be a lot of work I just gonna remove the lights
Thanks for the help
Great video, I am going to try to use one of these to boost the rpm of a 12 volt blower motor by sending 20 volts to it, do you think it will work or am I wasting my time.
If you send more voltage to a motor than it is rated for, the current will rise causing a rise in temperature. Since most motors are operated near their max temp, increasing temp will likely shorten the motor's life by a lot.
What would happen, when I have 12V/1,2A Input? Do I have then 24V/5A output?
You would have 24v 0.6 amps out.
@@tsbrownie ah, you know a way how I can have 12V/1.5A Input and 24V/2.5A Output?
@@tobiasstampfl2817 No, that violates physics. You can not get more power (volts times amps) out than you put in.
@@tsbrownie ok thank you
Good afternoon. Is the input ground wire and the output ground wire the same?
That is a good question, but they don't give the circuit diagram and I have not opened one up.
Can this be also use as 24v down to 12v.??
Not this device, but there are similar devices that go from 24 to 12v with very high efficiency.
@@tsbrownie Thanks
From what I have read going from12v to 24v should increase the RPM on a 12 VDC motor, is this correct?
If the motor is a 24 volt motor and you start at 12v and go to 24 volts, it will probably run faster. However depending on load, motor design, etc. you can damage it.
@@tsbrownie Sir the motor I'm referring to is a 12 VDC. Quick info, my old Snap-on wire feed needs a boost. I've clean and and used low temp. grease. The motor is very inconsistent it bogs down and speeds up.
@@jacked-666 24 volts would likely kill the 12 volt motor.
@@tsbrownie It will kill the motor? Thank you sir. I guess what I read was misinformation.
@@tsbrownie I should add that I'm referring to your step up converter 12 VDC to 24 VDC
Hello Mr. I just watched your video and it really is very interesting. I have a 12 volt 110 watt solar pump. I would like to use a 24 volt solar panel and a 24v12v 20 Amp converter (240 watts) to power the pump. My concern is the section of electric cable to use. The well is approximately 15 meters deep. I don't know if I can use 1.5mm, or 2.5mm or more electric cables. I don't want to have an overcurrent for the pump. Thank you in advance.
Since I can not see what you are doing, I can only guess. You need to verify for yourself. 12v 110w means about 9.2 amps. THEORETICALLY, a 24v 5A panel would work with a very efficient (low loss) 24v to 12v converter. I would go bigger if I could afford it. In MY area 1.5mm wire is rated for 13A, 2.5mm for 18A. Personally I always go with a bigger wire size because of power loss at low DC voltages from resistance is significant. If the pump is 12v DC, and the inverter puts outs 12v DC it should not have an over-current issue. Wires can not add current, they can only take it away. If you are using wires as resistors to lower current, that's not a good idea.
@@tsbrownie OK thank you
can it run on DC24V 600w motor?
600 watts / 24 volts = 25 amps. So if you can find one that will handle that many amps it should work.
Thank You 👍🏻
You're welcome!
Where did you get your power supply ?
This is a homemade power supply based on the LM338K voltage regulator.
Amper will be same?
No, it's like a transformer, you trade off amps and volts. But this is very efficient and output does not vary with input.
Can i use this to motorcycle?
Maybe, it depends on what you are doing.
@@tsbrownie im planning to charge a 24v solar battery with my 12v motorcycle
@@dadathegreat9910 I'm not sure I understand, but this device will take 12v and convert it to 24v by trading off voltage for (increased) current.
12v battery in>>24v converter out>> class D amplifier will it work?
@@dadathegreat9910 Don't know about the amp, but the other should work. Will depend on how much power you draw.
where can i buy it?
I bought this one at a local electronics shop. I've seen them in online shops.
Ebay / amazon
Aliexpress $5
@@tsbrownie is it regulated? Looks like it? Will be good for CPAP machines that use 24v to run off battery power in RV/camping?
@@fromtheflightdeck252 They seem to be well regulated, but I've not seen the circuit diagram so I can't say for sure or how it's done. I'm not a doctor nor familiar with CPAP tech so I won't venture a guess on it. They are relatively cheap and it might be worth trying it out for other uses to see if it will work for you.