Victron Energy Orion 12/24-Volt 10 amp DC-DC Converter Non-Isolated, High Power

I use this to bump 12 to 24v to maximize charging efficiency on my Bluetti EB3a power bank using the solar input. Just get a 7909 barrel jack pigtail with 16awg wire for the output and at least 12awg for the 12v in. and you can get the maximum charge from your car. You will need to use a direct wire, though. You'll surely burn out a cig lighter plug so don't do that. I'm assuming that a lot of folks think of doing this. Just make sure you fuse at the start of your wire coming from the source and not at the booster. Also the spade lugs are included, if you use your own, you should probably only use good quality yellow ones from the auto parts store as they are the only ones that would properly transfer the correct amount of current. Don't mess around and create a fire hazard. This booster does get warm during maximum charging from my EB3a so it will need room to breathe. Don't mess around with those no-name boosters in an aluminum heat sink brick. Its impossible to trust they will work. I tried that first and the 400w one can only manage about 35w.

I use this for charging a ecoflow river 2 pro… in my jeep. This more than doubles charge wattage available at 12 volts x 8 amps (100 watts)…. This bumps it up to 28 volts x 8 amps ( 220 watts ) anyway charging at 220 watts this barely generated any heat at all… yea I am impressed. Yea I know this can supply more than 220 watts… but the charge cable I am using is a xt60 not an xt60i , makes the difference to maximize watts but the unit I am charging maxes out at 220 watts anyway.

This seems to be acceptable so far. Maybe I was expecting more, but it seems to be merely OK. It's advertised with an ability to charge batteries, which is what I'll be using it for. It'll be charging a 24v battery from a 12v supply on a truck. I tried running the output through a 25 ohm resister with a lab power supply set to 13.6v. After cranking the voltage knob up all the way I got an an output of 27.1v. That's disappointing -- only a bit over 1 amp output. This thing is rated for 10 amps at 30v. So only getting 1 amp at 27.1v is disappointing. Moreover, the output voltage changes based on the input voltage. So it just wasn't all that stable. If you want any sort of accurate battery charging or regulated output, this is not the device for you. It's just not very good. Update: just installed it to actually charge the rv 24v battery. With 14.5v input, it manages about 8.4a at 26.3v output. With a 12.1v input, the output drops to just about 5a. This is with the output potentiometer cranked up all the way. I haven't had a chance to observe it in action for too long -- but it looks like it should charge the batteries slowly while I'm towing the RV.

Absolute garbage. 13.5V to the input, 0V from the output. The thing is a paperweight. I took it out of the box and installed it, then immediately removed it and purchased a different one. Customer was very disappointed. Using it on a solar array and battery box to provide 24 volt control wiring for level switches to start a pump contactor. Huge disappointment overall.

Works good. The voltage will drop once it has a load by a few points nothing drastic. You can manually adjust voltage

Works as expected and doesn't get to hit. Seems well built.

Got this to charge my power station from my battery bank,works fantastic.