Do You Need a Power Inverter for Overlanding? 3 Ways to Add AC Power to a Jeep Gladiator

You need a power inverter for overlanding only if something you carry has to plug into a wall outlet. Phones, lights, and a 12-volt fridge run without one. For everything else, there are three ways to get AC power in a rig: a portable power station, a small plug-in inverter, or an inverter wired to a battery. Which one fits depends on how many watts you need and how much wiring you are willing to do.

This comes up for Jeep Gladiator owners in particular, because the Gladiator can be had with a factory outlet in the bed, and plenty of trucks were built without it. Mine was one of them. Here is what the factory setup actually is, what your options are without it, and what I ended up doing.

What the factory Gladiator outlet is

The Gladiator owner's manual calls it a power inverter. On trucks that have it, there is a 115-volt, 400-watt maximum outlet on the back of the center console, and there may be a second one on the rear right side of the truck bed near the tailgate, turned on by a switch to the left of the steering wheel. On the 2026 truck, Jeep lists the 115-volt bed outlet as part of the available Cargo Group with Trail Rail System.

Three details in the manual matter more than the headline number:

• The 400 watts is shared. The manual says 400 watts is the inverter maximum, not the limit per outlet. Two outlets in use split it.
• It needs the key. The inverter only turns on with the ignition in ACC or ON/RUN.
• It is for small loads. The manual lists phones and low-power electronics, and says certain video game consoles exceed the limit, as will most power tools. If it goes over 400 watts, it shuts itself off.

So even the factory option is a laptop-and-charger outlet, not a jobsite outlet. That is a useful yardstick for everything below.

Start with what you are powering

Before picking hardware, sort your gear into two piles.

Runs on DC already: phones and tablets over USB, most camp lights, air compressors that clip to the battery, and 12-volt compressor fridges. The Dometic CFX5 45, for example, is powered by AC or by 12 or 24 volts DC, and Dometic lists its 12-volt consumption at 1.05 amp-hours per hour at 90 degrees ambient and 39 degrees inside. None of that needs an inverter, and a fridge is better off without one.

Needs AC: laptop power bricks, camera and drone battery chargers, cordless tool chargers, and anything with a household plug. Add up the watts printed on those, and you have your number.

One caution from the owner's manual applies to the whole article: accessories that draw higher power, and it names coolers, vacuum cleaners, and lights, will run the vehicle battery down faster and should be used intermittently and with care when the engine is off.

Option 1: a portable power station

This is the no-wiring answer. A power station is a battery, an inverter, and a set of outlets in one box. You charge it at home, set it in the bed or the back seat, and plug in.

Two current examples, with numbers from the makers' own pages on October 2, 2026:

• EcoFlow RIVER 2 Pro: 768 watt-hours, 800 watts of pure sine wave AC output (1,600 surge), listed at $529 regular price and $349 on sale.
• Goal Zero Yeti 500: 499.2 watt-hours, 500 watts continuous (1,000 surge), listed at $499.95.

The catch is refilling it on the trail. EcoFlow lists the RIVER 2 Pro's car input at 100 watts maximum, so putting 768 watt-hours back from empty takes most of a day behind the wheel. Goal Zero lists five hours for the Yeti 500 on its 10-amp car charger. If you drive a few hours a day and mostly charge laptops and camera batteries, that math works. If you camp in one spot for three days, add solar or plan on rationing.

Option 2: a plug-in inverter

The cheapest route is a small inverter that plugs into a 12-volt socket. Harbor Freight sells a 120-watt Jupiter for $24.99 and a 400-watt for $52.99.

The limit here is the socket, not the inverter. The Gladiator manual says not to exceed 160 watts (13 amps) at a 12-volt outlet, and that going over will blow the protective fuse. A 400-watt inverter on that socket is a 160-watt inverter. That is why the Harbor Freight 400-watt unit ships with two cables, a 12-volt adapter cable and a clamp cable for connecting straight to a battery, with the instruction to use one.

For a laptop and a camera charger, 160 watts is plenty. Just remember the socket draws from the starting battery.

Option 3: a hardwired inverter

Past a couple hundred watts, the inverter has to connect to a battery with real cable. This is the route that gets you 750, 1,000, or 2,000 watts, and it is also where the planning is.

Size it to the load, then look at the amps

An inverter has two ratings. Continuous watts is what it can run all day; peak or surge is what it can cover for a moment while something starts. Devices cannot use more than the continuous rating in steady operation, and some draw well past their label: the Harbor Freight manual notes that a typical 600-watt microwave oven draws about 1,000 watts.

Then do the arithmetic on the DC side, because that is what sizes the cable. Watts divided by battery voltage is amps, before losses. Harbor Freight rates its 2,000-watt pure sine inverter at 188 amps of input at 12.5 volts. That is a current no accessory socket or light-gauge wire will carry, which is why the same manual says to install a properly rated fuse on the positive output of the battery, and why the big inverters are sold alongside heavy cable sets. Follow the cable and fuse chart in the manual for the unit you buy.

Pure sine or modified sine

Harbor Freight's Jupiter line shows the price gap: 1,000 watts is $89.99 in modified sine wave and $199.99 in pure sine; 2,000 watts is $149.99 against $279.99. The manual is direct about what you give up with the cheaper one. Modified sine wave inverters should not be used to power sensitive devices such as medical equipment or plug-in computers, and certain devices, such as laser printers, variable speed motors, and digital clocks, require sine wave power to operate properly. If the plan includes a laptop on its wall charger, buy pure sine.

Where it goes and what it runs from

The manuals agree on a few installation points. Do not install the inverter in the engine compartment. Give it ventilation and do not cover the cooling fins. And think hard about the battery: if the inverter is powered by the starting battery, the manual says to be careful not to discharge it to the point that it will no longer start the engine, and it recommends deep-cycle batteries for inverter use, noting that AGM batteries can be used.

That last point is the argument for a second battery. A dual battery kit adds a house battery and an isolator, so camp loads pull from one battery while the other stays ready to start the truck. Genesis Offroad's Gen 3 kit for the 2020 and newer gas Gladiator is one example: $799 without batteries, it lets the engine charge the cranking battery first and then links the two in parallel, and it has a boost function that connects them like jumper cables to help start the engine. Genesis requires matching Group 25 batteries and notes that the factory battery is not compatible. On battery type, Optima draws the line plainly: RedTops are designed for starting, and YellowTops are designed for both starting and deep-cycle use.

What I did on my Gladiator

My truck didn't come with the bed outlet, so I added it with factory parts.

Mopar sells the pieces. The inverter switch that sits in the dash is part 68370049AA, listed for the 2020 to 2026 Gladiator at $40.90. The bed inverter power outlet is part 68312754AC at $160; check that against your VIN before ordering, because the listing isn't Gladiator-specific. I installed the outlet and the switch myself.

The parts alone do not wake up. I used a Z Automotive Tazer JL Mini, which lists "enable pickup bed outlet (Gladiator)" among its settings and sells for $329, to enable the feature.

The factory path is the inverter itself. Mopar's power inverter module lists at $349. I used a Harbor Freight inverter instead and feed it from a dual-battery setup running two Optima batteries: a YellowTop and a RedTop.

Two honest notes about that. First, this is what I did, not a procedure Jeep or Mopar publishes; I could not find an official retrofit document, and Z Automotive's listing covers enabling the factory outlet, not aftermarket inverters. Second, if you are starting from scratch, follow the kit maker and the inverter manual on batteries: match the batteries, and use a deep-cycle type on the side that feeds the inverter.

Which one should you pick?

• Weekend trips, laptops, and camera gear: a power station. No installation, and you can take it with you when you sell the truck.
• One laptop, on a budget: a plug-in inverter, inside the 160-watt socket limit.
• Tools, long stays, or anything over a few hundred watts: a hardwired pure sine inverter on a second battery.
• You want it to look factory: the Mopar outlet and switch, with the caveats above.

Power is one piece of a build. For where the weight goes once you start adding gear, see overland packing and gear storage, and for what all of it does to your fuel range, your overland range problem is the roofline, not the engine. If the Harbor Freight angle appeals, we put their recovery gear through the same budget test, and 10 expensive Jeep upgrades and the cheaper alternatives cover where else the money goes further.

Checked October 2, 2026. Prices and specifications are from the manufacturers' pages on that date and will change. Electrical work on a vehicle can start a fire or leave you stranded; this is general information, not installation instructions. Follow the manual for the equipment you buy, and have a professional do the wiring if you are not sure.

Frequently asked questions

Do you need a power inverter for overlanding?

Not always. Phones, lights, and a 12-volt compressor fridge all run on DC power without one. You need an inverter, or a portable power station with AC outlets, when something only plugs into a wall: a laptop charger, camera and drone battery chargers, a cordless tool charger, or a small appliance. List what you actually carry before you buy anything.

How many watts does the outlet in a Jeep Gladiator provide?

The factory power inverter is rated at 115 volts and 400 watts maximum. Per the owner's manual, there are two outlets: one on the back of the center console and one on the rear right side of the bed near the tailgate, and the 400 watts is shared between them. It only works with the ignition in ACC or ON/RUN.

Can you plug an inverter into the 12-volt socket?

Yes, within the socket's limit. The Gladiator owner's manual caps each 12-volt outlet at 160 watts (13 amps), so a plug-in inverter can deliver about that much no matter what number is printed on its case. Anything bigger has to be wired to a battery.

Do you need a pure sine wave inverter?

For sensitive electronics, yes. Harbor Freight's own manual says modified sine wave inverters should not be used to power sensitive devices such as medical equipment or plug-in computers, and that some devices, such as laser printers, variable speed motors, and digital clocks, require sine wave power to work properly. Simple chargers and resistive loads are less picky.

Will an inverter drain your starting battery?

It can. Inverter manuals warn against discharging a starting battery to the point that it will no longer start the engine, and recommend deep-cycle batteries for inverter use. That is the case for a second battery with an isolator, or for a portable power station that carries its own.

Does a 12-volt fridge need an inverter?

No. Compressor fridges made for vehicles run directly on 12 or 24 volts DC. Running one through an inverter converts DC to AC and back again for no benefit, and wastes power doing it.