ExpertPower 3000W Pure Sine Wave Inverter Charger | Peak 9000W | DC 12V - AC 110V | LifePO4/ Lithium Battery Compatible | Auto Transfer Switch | LCD Display

We purchased the ExpertPower 3000 inverter charger to replace a different, well-known brand that came stock in our Class A RV. The previous unit only produced a square wave, which was damaging our appliances and electronics. In contrast, the pure sine wave output from this model has been outstanding, even with our most sensitive devices.We boondock occasionally and have a 5KW battery bank powering this inverter. While boondocking, we use power save mode, which consumes just 10 watts at idle and performs flawlessly with no issues observed. In parks, we switch to normal mode, where the idle standby consumption is 90 watts. The power transfer remains seamless when connecting to shore power or switching to a generator. During storm-related power outages, the transition was so smooth that we didn’t even notice the power had gone out.We opted for the model with the remote display, which fit perfectly into the same location as the old unit’s display, making installation a breeze. The remote display makes it easy and convenient to keep tabs on the system’s status, including battery levels and operational modes, at a glance.Once, we accidentally ran the batteries down to the 10.5V cutoff, at which point the alarm kicked in as expected. The inverter handled the situation well and protected our system without any issues. The surge functionality has also proven reliable—once, we accidentally ran more appliances than the system should have handled, and it managed the load without a problem.Installation was straightforward; the inverter fit perfectly into the existing basement cabinet and wired in without complications. The charging function works as advertised, efficiently maintaining our battery bank. Configuration was simple, and the build quality has been excellent. It has already endured cross-country trips in extreme summer heat and winter cold without a hitch.Compared to other options with similar specifications, particularly the more expensive “blue” brand, this unit has delivered exceptional value for the price. We initially purchased one of the popular blue models but ended up returning it and opting for the ExpertPower 3000 instead. This choice has more than paid off in performance and reliability.

I've been using this unit for over a week now, and it's working as expected with one 200AH LIFEPO4 battery. I haven't had any issues with it, it looks solid.

20% restock + shipping to return. It's Impractical for most RVs. You need to be fully aware that a cut off switch at your battery box is needed and you will need to do a resistor pre-charge before using. if installed as recommended it will drain battery when not being used to run your 110v appliances. Also needed is a place for floor mount close to battery box as it can not be wall mounted on flimsy RV walls.The cost to return was about half the cost of the purchase. $117 shipping + 20% restock. Go figure.

All around good inverter. Has a decently clean sine wave and does rated power easily. Meets and sometimes exceeds the 60amp charging current. Only real issues I have is the accuracy of the readings on the screen are off by a few volts. As well as it only outputs 108-110vac. Not a huge issue with most things but I'd prefer to see 115-120v output.

Wonderful upgrade to my vintage RV. Well made and easy to install. Very pleased with results. Full time RV living.

We have wanted to boondock and camp in locations and parks that don’t have electric hookups and up to now have only had the standard 12 volt lead acid battery on our travel trailer. This year we decided to upgrade to lithium batteries with the goal to also add solar down the line. In researching the switch to lithium I knew I needed a lithium-compatible charger and also an inverter and so I began looking for an all-in-one inverter charger. I came across ExperPower’s website and liked what I saw about their customer service and support and the specs for their inverter chargers. I installed this inverter charger along with 400 Ah of lithium batteries and everything is working great. The charger replenishes the batteries from 10 to 15% charge to 100% very quickly and the cooling fan is thankfully fairly quiet (appreciated since it’s mounted in the under-bed storage area.) The unit is robust, built very well and the battery posts and AC inputs and outputs are high quality and heavy duty so no worries about stripping a bolt or terminal when tightening down the connections. What I REALLY appreciate is the long cable for the remote switch; I was able to mount it just below the control panel adjacent to the trailer’s door with cable left over. Very happy with our purchase!

Instructions simple

Tested inverter with 400 Ah battery bank ran up to 3kW with no problems. Charger tested at 58.9 to 59.3 amps.Voltage input reads 0.3 volts low according to DVM and smart shunt.Arrived double boxed and fitted with closed cell foam. Slight blemish on decal. Will only turn on with extension switch. No cover for ac terminals. Cables about 6 feet and 1/0 manual calls for 3 feet 3/0. Comes with precharge resistor.Overall a good product. Didn't test ATS.2/13/2025 updateWorked very well last year, even ran A/C for 2 1/2 hours without stressing the battery bank.Just ordered the 2000 watt version for another camper.