Victron Energy Phoenix 12/1200
(10 reviews)
A thousand watts of true pure sine wave from a 12 volt battery: the reference among motorhome owners and sailors, with a five-year warranty.
Buy at AmazonAs an Amazon Associate I earn from qualifying purchases.
Characteristics
- Output: 1000 W continuous at 25 °C, 2200 W peak
- Waveform: True pure sine wave, adjustable 230 V
- Standby: ECO mode, 1 W draw
- Format: 7.4 kg, 25 mm² screw terminals
- The pure sine wave that runs nearly anything
Detailed overview: Victron Phoenix 12V 1200 VA pure sine wave inverter
The Victron Phoenix 12/1200 VE.Direct converts a battery bank's 12 volts DC into 230 volts AC. It is rated at 1200 VA, meaning 1000 watts continuous at 25 °C and 850 watts at 40 °C, with an admissible 2200 watt peak. It is the model in the range that opens the door to everyday household appliances.
The signal produced is a genuine pure sine wave, generated by a full-bridge topology paired with a toroidal transformer. That architecture explains the 7.4 kilo weight and the series' recognised robustness: it copes better with brief overloads and with hot or vibrating environments than a light high-frequency design.
ECO mode brings standby draw down to one watt when no load above fifteen watts is present, against ten watts in normal operation. The unit wakes briefly every 2.5 seconds to check, an adjustable interval. On a boat or motorhome left in port over winter, the saving runs to tens of amp-hours a week.
The VE.Direct port allows configuration of low-voltage alarm and cut-off thresholds, load-dependent dynamic cut-off, output voltage from 210 to 245 volts and frequency at 50 or 60 hertz, via a Bluetooth dongle or a USB cable. The input accepts 9.2 to 17 volts and cuts off at 9.3 volts. The enclosure is IP21, it works from -40 to +65 °C and connects through screw terminals taking up to 25 square millimetres. Victron warrants the unit for five years.
If your needs stop at a laptop, a television and charging tools, the Phoenix 12/500 is enough and costs considerably less. Conversely, check your battery bank capacity before aiming at 1000 watts: our solar section lists suitable leisure batteries.
User manual / Instructions for use (PDF)
Comparison
The Phoenix 12/1200 compares poorly with modified sine inverters of nominally similar rating. Here is why.
| Criterion | Victron 12/1200 | Victron 12/500 | Ampeak 2000 W | Bestek 500 W |
|---|---|---|---|---|
| Continuous output | 1000 W | 400 W | 2000 W | 500 W |
| Peak | 2200 W | 900 W | 4000 W | Not stated |
| Waveform | Pure sine | Pure sine | Modified sine | Modified sine |
| Zero-load draw | 10 W (1 W in ECO) | 6.5 W (1 W in ECO) | Not stated | Not stated |
| Observed price | ≈ 394 € | ≈ 146 € | ≈ 175 € | ≈ 60 € |
On paper the Ampeak 2000 W claims twice the power for less money. In practice it is a modified sine unit whose real continuous output depends heavily on ventilation and battery voltage, and it is unsuitable for sensitive appliances. The Victron addresses people fitting a permanent installation: ECO mode, the five-year warranty and signal quality justify themselves there, far less so for occasional use out of a boot. For more modest needs, the Phoenix 12/500 offers the same qualities at reduced power.
Related video
Video: Pure Sinewave Inverter for off-grid RV or boat. Small & compact Phoenix VE.Direct - Published on 03/03/2022
Our tester's review: Gilles Caron
A thousand watts is the threshold at which an inverter stops being a stopgap and becomes a genuine onboard supply. Below it you charge appliances; at this level you run a coffee machine, an entry-level microwave, an angle grinder or a compressor fridge without thinking. The 2200 watt peak matters as much as the nominal rating: it absorbs the inrush current of a motor starting, the very moment when many cheap inverters simply shut down on protection. The Phoenix produces a pure sine wave through a toroidal transformer, an old but proven topology Victron has not abandoned in favour of lighter electronics. That explains the 7.4 kilos, and it also explains the reputation for reliability these units enjoy on boats that vibrate and motorhomes that get hot. ECO mode remains, as across the range, the argument buyers underestimate and then come to appreciate: one watt of standby instead of ten adds up to over two hundred watt-hours saved per week on an installation left connected. The VE.Direct port gives access to low-voltage cut-off thresholds, load-dependent dynamic cut-off, output voltage and frequency. Two reservations. Price first: at around two hundred and fifty euros on the continent it costs more than a modified sine unit rated at 2000 watts, and you need to understand why to accept that. Then battery sizing: 1000 watts out means nearly 90 amps drawn at 12 volts. A 100 amp-hour lead-acid battery will last only about thirty minutes at full load, and you need heavy-gauge cable up to the 25 square millimetre screw terminals.
Frequently asked questions: Victron Phoenix 12V 1200 VA pure sine wave inverter
At full power the unit draws nearly 90 amps at 12 volts. A 100 amp-hour lead-acid battery will last only about thirty minutes, and discharge deeper than recommended. Plan on lithium or a 200 amp-hour bank for comfortable use.
An entry-level model rated at 700 watts of cooking power, yes, since its actual draw is around 1000 watts, and the 2200 watt peak absorbs the start. An induction hob or a powerful microwave will exceed its capability.
The screw terminals take up to 25 square millimetres and you should get close to that: at 90 amps an undersized cable heats up and drops enough voltage to trip the inverter's low-voltage protection. Keep the run to the battery as short as possible.
It can with very low-draw devices, such as a phone charger on its own, which the inverter fails to detect and leaves in standby. The detection threshold is adjustable through VE.Direct, and ECO mode can simply be switched off.
Other products in the "12V → 220V converters" category
Bestek 500W power inverter
See price
500W of 220V in the car: the Bestek inverter turns your cigarette lighter or 12V battery into a mains socket to power small devices and charge on the road.
Bestek 12V 220V Converter 200W
See price (8)
Of excellent quality, this small inverter converts a 12V current into a 220V current and also features 4 USB ports.
Victron Energy Phoenix 12/500
See price (4)
The inverter you fit once for a decade: true pure sine wave, an ECO mode that draws a single watt on standby, and five years of manufacturer warranty.
Published on 26/07/2026