Why the name “2000” needs explanation
Xantrex sells this model as PROwatt SW 2000, but the current technical specification lists 1,800 W continuous output and 3,000 W surge. The marketing/model number must not be substituted for the continuous rating.
This is useful in a camper because loads should be planned against the documented continuous and surge limits, not a rounded product name.
From 12 V battery power to household AC
The inverter takes nominal 12 V DC and produces North American 120 V-class AC at 60 Hz. Xantrex specifies an input range of 10.5–15.5 V DC and AC output range 104–127 V.
A high-power AC appliance therefore creates a very large current on the 12 V side. That is why short, correctly sized DC cables and appropriate protection matter.
True sine wave
The output is a true sine wave, intended for sensitive electronics and motor loads as well as ordinary appliances within the power limits.
True sine quality does not mean every appliance is automatically suitable. Startup surge, continuous watts and the camper's battery capability still need to be checked.
Continuous and surge power
The official product page lists 1,800 W continuous and 3,000 W surge. Surge is for short startup events; it is not a second continuous rating.
MHS explanation.If an induction appliance or microwave is close to 1,800 W continuously, there is little reserve for simultaneous loads. The inverter should not be sized by assuming everything runs at nameplate maximum forever, but the combined realistic load still matters.
Battery current and fuse size
Xantrex recommends a 250 A DC fuse for the PROwatt SW 2000. That illustrates how much current can exist on the battery side of a 12 V high-power inverter.
The fuse is part of the installation, not proof that any cable can carry 250 A. Cable length, conductor size, terminals and battery/BMS discharge capability must all be engineered together.
Efficiency and idle draw
Optimum efficiency is published at about 90%, and no-load draw is under 0.6 A on the current product page.
MHS explanation.Conversion losses mean the battery supplies more power than the AC appliance receives. Leaving the inverter on with no load also uses some energy, which matters during long off-grid stops.
GFCI outlets and fixed wiring
The unit provides dual GFCI receptacles. Xantrex also offers optional accessories such as a transfer relay and remote control.
Using built-in receptacles is different from feeding a camper's permanent outlet network. Any fixed AC integration needs a correctly designed transfer/shore-power arrangement to prevent unsafe backfeed.
Low-voltage behaviour
The input range begins at 10.5 V and the documentation includes low-battery alarm/cutout behaviour. These inverter thresholds are not a replacement for the battery's own BMS or a broader low-voltage strategy.
Voltage at the inverter can also sag because of cable resistance even when the battery itself is healthier, so wiring matters during high loads.
Physical installation
The current specification gives approximately 100 × 299 × 348 mm and 4.9 kg. The inverter needs ventilation and accessible DC/AC connections.
Do not bury it in soft cargo or a sealed cabinet to save space. Heat removal and safe service access are part of the installation.
What to check in a camper
Confirm part 806-1220 / PROwatt SW 2000 and the 120 V North American version. Check the DC fuse, conductor size, battery/BMS discharge capability and how AC outlets are switched between shore power and inverter.
If a remote switch or transfer relay is claimed, verify those accessories separately—they are not implied merely by the inverter model.
Key takeaway
PROwatt SW 2000 provides clean 120 V AC from a 12 V battery, but its documented continuous rating is 1,800 W. The quality of the DC wiring, protection and transfer arrangement is just as important as the inverter itself.
Sources
North American 806-1220 model. Despite the 2000 model name, current Xantrex data lists 1,800 W continuous output.