Victron Energy Orion XS Smart DC to DC Battery Charger 12/12 50A (700W) - IP65 Dust & Waterproof - Fully Configurable - Remote Management Possible - Advanced Battery Protection

I was surprised at how small this unit was compared to my Solar MPPT 100/50 unit (see photo). There are no heatsink fans on the back so I was worried that it would get hot, but it doesn’t.As usual, the VictronConnect app is where it’s at and it’s great to be able to see Solar and Alternator charging from the same place. Really excellent system.Previous to this I was just charging the leisure batteries (4 x 100Ah) from the alternator when solar wasn’t cutting it over winter, but it took forever to charge to 100% and never reached Absorption voltage. This however is a night and day difference in terms of charging in the way it controls the voltage and current when charging. True bulk, absorption, float and storage states means it charges the batteries quickly. Easily three times quicker than using the alternator alone - depending on state of charge.The entire Victron system is highly recommended. A+

I had a Sterling Power 60a charger which went faulty. Their customer service was useless so I decided to try out this Victron unit. It's a fraction of the cost, a fraction of the size, it runs silently & charges better than my old one. I have many Victron products & I can't fault any of them. Buy this with confidence. You will be happy

Perfect no problems

I replaced a 25amp Australian made b2b with this on a pilote motorhome. The motorhome has the 24amp fridge connected to the charger output so there was little left to charge the batteries. The victron replaced the old b2b but is the same physical size. Uprated 16mm2 wiring is required. We can now charge the battery in just over an hour of driving.

The Orion XL is a really great charger and this one fitted into our campervan is perfect. A better option than the Orion Tr with more options, lighter without getting too hot.

Fitted to a narrow boat this now takes power from the alternator/starter battery only when the engine is running and the voltages are high enough (values can be set).It then helps charge a large lifepo4 battery at set amperage values ensuring the alternator doesn't over heat from constant charging and protection from a sudden end charging spike (lifepo4 will take a constant voltage/amperage until full then stop charging whereas lead acid voltages taper off as they become charged).It "talks" to the victron mppt and inverter via a Bluetooth network (inbuilt) and keeps the charging values inline with the battery requirements and solar feed.Gets luke warm instead of hot like the older units.Brilliant bit of kit as the engine bay is now an isolated unit from the leisure system.

As you would expect from Victron, it does exactly what it is supposed to do, great product

Bought for a motor home charging upgrade.This B2B charger works well so far but on the first unit supplied the remote switching jumper came adrift from the PCB. The jumper plug is stiff to remove but was inadequately soldered to the PCB so it became loose on the PCB when removed during installation as instructed to do. This defect took a while to diagnose.This has rather knocked my faith in Victron products, which I had for decades regarded as solid bits of kit, very robust and well engineered. The jumper arrangement is surprisingly poor! “Tat” might be the word! I will now be looking more closely at Victron products before buying “Blue” automatically as I have done in the past.The charger was replaced without quibble but I did not dare to remove the jumper during installation as per the instructions. I left well alone! If there had been the time to re-jig the installation and install an alternative product then I would have done so. I would probably have bought the Renogy B2B, which is also cheaper and as I recall higher capacity.The input and output cable terminals are also very small. 16 sq. mm. cable is specified, but not all 16 sq. mm. cable can be persuaded into the terminal, and there is no room between the terminals for any stray strands! I wanted to fit a Battery Master as well and it would have been very convenient to wire this into those terminals, but no way was there space for an extra tiny cable! Bring back decent bolt-on lug terminals!!So all in all rather disappointed, but it is doing the job so far. I would look more closely at alternatives next time.