Orion-Tr Smart DC to DC Charger (Bluetooth) - 12/12-Volt 30 amp 360-Watt - Battery Charger for Dual Battery Systems - Non-Isolated

Bought this for my boat to charge a Lipo4 battery. It was very easy to install and configure using the bluetooth interface. It's not too big to be effectively installed in a small hatch but you'll need to watch out for airflow as the unit can get a bit hot. That said, it will charge just about any battery - it's quite versatile. It's not cheap but who wants cheap on the water? There's a reason you see victron on so many sailboats, etc.

Great unit of course, being Victron. And the first thing I've ever bought "used" via Amazon. Appeared new but in weathered original packaging.....may have been a return but looked new upon inspection and works perfectly.

When it came time to upgrade my motorhome to Li-ion house batteries, there were two choices for protecting my alternator: a DC to DC charger or one of those timer-style systems. After reading and listening to many experts, I chose the DC to DC charger. Since I wanted a DC to DC charger, there was really only one top-of-the-line company, Victron. I was able to find the product that I needed for a little less than ordering directly. Same product, less money! The instructions were absolutely clear, and as I ordered, I was able to look ahead and get all the parts I needed. The only difficulty I ran into was separating the ignition and battery connect wires in my coach. Once I figured that out, the installation went quickly. To configure the charger, I just needed to install the application on my phone and connect via Bluetooth. The application walked me right through the setup to include whether you have a smart alternator, ignition wire, etc. There was NO trial and error, configuration was easy and right the first time. We are only part-time campers, so I have only used the system twice, and most of our driving, we use the generator to run the overhead AC units. This is primarily a secondary method to keep our house batteries charged. In the few tests, it does exactly what is advertised. The Li-ion battery is getting 14.5 volts while minimizing the draw on my alternator.

We've been camping in converted vans for over ten years, with ever-evolving electric systems. All three of the vans I've converted have had a battery-based, solar charged electric system. The last van and our current one have both had ample battery capacity, with the limiting factor being our charging capacity, especially in less than ideal conditions. I finally decided to install a DC-DC charger, after kicking the idea around for the last three years or so. I'm so glad I did. We haven't had a chance to camp in the van yet, but it's already making a difference. It's early March as I'm writing this, and solar conditions are far less than ideal here in New England, but our batteries are staying fully charged, despite having some fairly heavy loads on them. I made a 3-gallon electric water heater over the winter, and I've been using that to test the charger. I installed a 200 watt element in it, so it takes a while to heat the water significantly - about 3-4 hours. 200 watts at 12 VDC is about 18 amps - a fairly good load on a small system like ours - but the charger keeps up with it no problem. I think this is going to make our off-grid camping much more comfortable. I considered the Renogy, which is cheaper and higher output. I decided on the Victron, partly based on reviews, partly on reputation, but mostly on physical dimensions. The installation was easy - the hardest part was running the 6 AWG wire to the starter battery. The unit gets a bit hot in use, but not dangerously so. I've installed a couple of 80mm fans on a temperature controller above the charger to cool it down. I'm not sure I needed to do that, but it provides peace of mind. The unit seems very rugged, and the Victron app is very convenient for monitoring the system as I drive, Overall, I highly recommend this unit.

If you don't have lithium batteries, you don't need this device. The chassis alternator can get fried if it tries to recharge the engine and lithium house batteries because the lithiums have very low internal resistance. There are a lot of videos on that. I highly recommend the Victron SmartBMV. Without it, you won't really know what the charger is doing. The Victron Connect app lets you program both the Smart BMV and the converter. How to install in a motorhome: The supplied instructions are confusing, but this is the advice from tech support given to me. You need to separate the circuits for the chassis and house batteries. There is likely a relay that on ignition power interconnects both systems so that your alternator normally charges both. You need to find that relay and deactivate it. In my coach, it was a large, White Rogers relay located under the inverter/charger. Once you find it, disconnect its grounding wire (probably white). You will later need to access the positive ignition wire attached to it (leave it attached). With that relay now unpowered, make sure it is really open by removing the cables on it and using your multimeter (mine was stuck closed and I had to replace the relay). If you put the cables back, they won't accidentally touch each other. Leave the ground wire to the relay off, forever. Next, you should use bus bars, sold here. You will use all 4 posts on both bus bars. You will want to mount the converter close to your chassis AND lithium batteries. You will need several sets of battery cables and they'll have to be long enough to reach from the ENGINE batteries whose positive will connect to a 60 amp fuse/circuit breaker and then go from there to the input on the converter. (The lithiums should have the SmartBMP shunt attached first. Check the app to make sure it's working and do the update online for it via your smartphone.) Look at the green switch plug (it comes in the little Ziploc bag) and see how it inserts into the converter. The left connector on it is L, the right one is H. Remove the wire loop from the H connector (let it dangle from the L) and run a wire to that H connector from the ignition wire attached to the unpowered interconnect relay. Plug the green switch module into the converter. Connect the cables from your inverter/charger and from the lithiums to the bus bar (you can determine where they come from by disconnecting them from lithium batteries and turning off the inverter/charger, checking voltages with your multimeter when turning them back on). Attach a cable from the ground connection on the converter to the negative bus bar, which should also have a battery cable from the lithiums negative. The cables to the bus bars from the lithiums should not come from just one battery (assuming you have at least 2). The positive should come from one battery and the negative from the other. Connect a cable from the converter output to the positive bus bar. The Blue LED on the converter should flash slowly. Start the Victron Connect app and do the update (it takes about a minute). Set up the converter for lithium batteries. Turn the ignition key to the on position. The app will say that the engine hasn't been started! Start the engine and the converter will go into bulk charge mode, which you can see on its app and also watch on the BMV app. The blue and green LEDs will now be flashing about once a second. Lastly, make sure the main power disconnect switch (usually located by your entry door), turns off and on your 12 system - ceiling lights, porch lights, water pump, etc.). If it's a toggle switch and it doesn't work, then there's either a problem with that latching solenoid (it may look like a relay, but it's not!!! - mine was a Cole Hersee 24200 latching solenoid that switches from open to closed back to open after each momentary contact power) or that solenoid isn't getting power from the CHASSIS batteries. My latching solenoid is located next to the interconnect relay (the White Rogers) under the inverter/charger. If your disconnect switch is a regular switch and not a toggle, then it probably goes to a real relay and you need to check its power and function. You should now be done!

Fast delivery top product exactly what I wanted

Top, configuration parfaite, ne chauffe pas tant que ça, un peu gros et lourd par rapport à la concurrence mais c’est aussi ce qui fait sa solidite

Ottimo prodotto funziona egregiamente anche l'app e semplice e funzionale

Excellent produit facile d’utilisation et d’installation

These are the gold standard for marine use DC-DC chargers. Easy to install, easy to set up, works really well, and well supported by the manufacturer.