Victron Energy
Victron Orion-Tr Smart 12/12-30A Isolated DC-DC Charger — 360W, Bluetooth (Alternator to House Battery)
Victron Orion-Tr Smart 12/12-30A Isolated DC-DC Charger — 360W, Bluetooth (Alternator to House Battery)
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The Victron Orion-Tr Smart 12/12-30A Isolated DC-DC Charger turns your alternator into a smart battery charger — pulling power from your starter battery (or alternator) to charge a separate 12V house bank with a proper three-stage charge profile. This is the ISOLATED version, with galvanic isolation between input and output — required for many marine installs and recommended when chassis grounds differ.
Built-in Bluetooth lets you monitor and configure from your phone using the VictronConnect app. Works with lead-acid, AGM, gel, and lithium house batteries.
Why a DC-DC charger instead of a battery isolator?
- Lithium-safe — modern alternators are not designed to charge lithium house batteries directly. Lithium banks pull huge current at low resistance, which overheats alternators. The Orion-Tr limits current and provides a proper charge profile.
- Three-stage charging — bulk, absorption, float (configurable for lead-acid or LiFePO4) instead of a constant-voltage dump from the alternator.
- Engine-start detection — auto-disables charging while engine is off so it won't drain your starter battery.
- Isolated input/output — no shared ground required between source and target. Common requirement on boats with shaft grounding.
- Bluetooth monitoring — watch real-time current and battery status from your phone.
- Parallel-capable — chain unlimited units in parallel to scale up amperage (e.g., 2× = 60A, 3× = 90A).
Isolated vs Non-Isolated — which one?
| Isolated (this model) | Non-Isolated | |
|---|---|---|
| SKU | ORI121236120 | ORI121236140 |
| Galvanic isolation | Yes | No |
| Required for marine | Usually yes | — |
| Best for | Boats, shared chassis with isolation, electrical-sensitive systems | RVs, vans, simple installs where the input and output share a chassis ground |
| Price | $243.95 | $215.05 |
What's in the box
- Orion-Tr Smart 12/12-30A Isolated DC-DC charger
- Mounting screws
- Quick-start guide
Specifications
| Input voltage range | 10–30 VDC |
|---|---|
| Output voltage | 12V (adjustable 10–15V) |
| Rated output current | 30A |
| Rated output power | 360W |
| Efficiency | 87% (max) |
| Galvanic isolation | Yes (isolated input/output) |
| Bluetooth | Built-in (VictronConnect) |
| VE.Direct port | Yes |
| Engine-start detection | Adaptive (input voltage based) |
| Charge stages | Bulk, Absorption, Float (3-stage adaptive) |
| Battery chemistry | Lead-acid (AGM, Gel, Flooded), LiFePO4 |
| Parallel capable | Yes (unlimited units) |
| Protection | Reverse polarity, output short-circuit, over-temperature |
| Operating temperature | -40°C to +60°C |
| Enclosure rating | IP43 |
| Dimensions (HxWxD) | 113 x 200 x 75 mm (4.4 x 7.9 x 3.0 in) |
| Weight | 1.3 kg (2.9 lb) |
| Manufacturer SKU | ORI121236120 |
| Warranty | 5 years (manufacturer) |
Recommended applications
- Marine — sailboat or powerboat house bank charging from the engine alternator (isolation is required for most installs)
- Van Life / RV — lithium house bank from a 12V alternator (lithium-safe current limiting)
- Overlanding — auxiliary battery in a 4×4 or expedition vehicle
- Mobile work — equipment battery in a service truck powered from the engine
- Tow vehicles — trailer house battery charged while driving
Need more than 30A?
Two options: parallel two Orion-Tr 30A units for 60A (~720W), or step up to the Orion XS 12/12-50A for a single higher-output unit. For 24V house banks see the Orion-Tr Smart 24/12 or 12/24 models. For high-amp applications or off-grid use, the Buck-Boost 100A is an option to consider.
Every Jonsson Tech order ships within 5 days nationwide from our Houston, Texas warehouse. Free pre-purchase sizing consultation — call 346-574-9652 or email support@jonssontech.net with your alternator output, cable run length, and battery specs and we'll confirm the right Orion size and recommend cable gauge before you buy.
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