BESTEK Pure Sine Wave Power Inverter - 300W Car Plug in Charger Outlet DC 12V to 110V AC - Cigarette Lighter Adapter 4.8A Dual USB Fast Charging Ports for Phone, Laptop, CPAP - Black

Works well and the fan is quiet. Before buying, you have to understand this particular product provides 300 watts total, not per outlet. However, you still have to calculate the total watts you plug is going to provide. A 20amp cigarette lighter plug in a 12 volt vehicle provides 240 watts total (20A x 12V = 240 watts). So check your vehicle manual fuse chart to verify the size fuse the cigarette lighter uses to calculate what you are getting out of the lighter. DO NOT increase the fuse size to meet your needs. If you needed all 300 watts, there are kits available to wire directly the battery.

The BESTEK 300W Power Inverter is an absolute essential for life on the go, seamlessly transforming my car into a mobile power station. Its greatest strength is the pure sine wave output, which provides clean, stable power identical to a home wall outlet. This means I can confidently and safely charge sensitive electronics like my laptop, camera battery, and premium headphones without any risk of damage or the humming interference common with cheaper modified sine wave models. The convenience is unmatched. The unit plugs directly into the 12V socket, and the two AC outlets and two USB ports allow me to power multiple devices simultaneously during road trips or while working remotely from my vehicle. It has effortlessly handled everything from a small fan to charging a CPAP machine for a camping trip. Compact, reliable, and incredibly efficient, this BESTEK inverter delivers professional-grade performance in a user-friendly package. For anyone who needs trustworthy AC power away from home, this is an invaluable and highly recommended investment. It simply works perfectly.

First: A big thanks to all of the Amazon Reviewers leaving detailed and technical reviews of this product! I've been considering an inverter for use on long road trips for years now. This spring, I purchased a car equipped with wi-fi. This kicked my consideration into serious shopping mode. I wanted to use my work laptop to accomplish things from the passenger seat. I looked at Dell's online shop and what they had that was compatible with the laptop. I then came to Amazon for the reviews of that model. Not great. Reviewers were mentioning that you need a Sine Wave inverter for laptops. Based on that information, I switched my amazon search to include that term and I stumbled upon this device. I purchased this inverter based on the thoughtful and detailed reviews from purchasers who know more about the technology than I ever will. It performed beautifully and did not even get warm to the touch. I used my laptop twice over our 6.5 hour journey. Once for approximately 3 hours while I took mandatory training though work's learning center. The second time was to respond to emails and fix a few documents and took about an hour. The USB ports ended up being a much needed benefit to this device. This was our first road trip in the new car and my husband (while setting up & testing the inverter) discovered all of the car's charging ports are USB-C (aside from the one cigarette lighter plug in the behind the center console). The car does have a magnetic charger but his phone case does not have a compatible case. We have since ordered USB-C to USB-C charging cables. Over the course of the 2 way trip, we used this device to power 1 Dell Latitude 5420, an iPhone 12 Pro Max, and 1 Kindle Fire. I'm very happy with the performance and thrilled I can work from the passenger seat instead of burning a day of PTO while watching cornfields go by.

Most important things to know about why I bought this and what I think of it.... 1. I built a small battery box to power a mini PC and a couple lights during relatively short power outages. I don't think the mini PC necessarily absolutely has to have a pure sine inverter but the price difference between an inexpensive modified sine wave inverter and this pure sine wave inverter is small enough that it sure can't hurt to just get the pure sine. 2. My knowledge on electronics is a bit shaky but what I do know is that I have a fan that does not run well on modified sine wave inverters. It's motor makes an ugly buzzing sound when it's connected to one of those. So I can't run a fancy test on this to verify that it is definitely pure sine wave. However, the first thing I did was plug up that fan to it and the motor runs exactly as quietly as it does when it's plugged into a house outlet. This tells me that most likely, the pure sine wave claim is as accurate as it needs to be for the price. And maybe even better for all I know. 3. I don't really have any complaints on the fact that this inverter can't be connected any other way than through the hardwired cigarette lighter plug. That is (after all) what kind of a connection I was looking for. But I personally wouldn't try to pull 300 watts through that plug. Lucky for me, I don't ever intend to. Everything I intend to run off of this inverter totals less than 60 watts. If you are looking for anything near the 300 watts (or more), I would personally be prepared to spend more. So far, I've tested it up to 3 hours running the 50 watt load continuously off of a 20 AH lithium battery. No problems to report as near as I can tell. Since I already had the battery with a cigarette lighter socket wired to it, this is a very inexpensive way to have a little bit of emergency power to keep lights on and check the news during power outages on a full sized screen without squinting at my phone. The one minor complaint I have is how it was shipped. It was shipped in a box that's barely big enough for the item and so, the non-removable power cable was bent at a 90 degree angle that left a kink in it after being unwound. This could have easily been avoided by simply making the box a little larger and not bending the power cable at an extreme angle just to make it fit in the box. Considering that the cable can't easily be replaced, the last thing you want is anything that even slightly damages it. I'm nitpicking though. This inverter fits into a fairly specific niche. Many people are probably looking for more power and versatility. I just don't need more than about 100 watts.

I have just received my unit about 2 days ago and started testing. Unit works exactly as per the specifications. Low voltage shutdown is 10.6vdc. (Manual says 10.5vdc – close enough!). The tests were done in my vehicle with a small 250watt Kaz (Honeywell) heater, running on half setting. (Tried full setting but that immediately popped the cigarette lighter fuse in the vehicle’s fuse box – NB: There is definitely NO fuse in the unit’s plug itself!). The inverter powered the heater with no issues while the engine is running but gets to the low voltage shutdown within minutes when the engine is shut off. This is due to quite a voltage drop at the cigarette lighter plug. Probably due to thin gauge wiring used by GM to wire the vehicle. The fan noise can be lower if better fan is used but is not too bad. One get used to it very quickly. The wires and the unit stayed cool, no heat detected except at cigarette plug itself. (but it doesn’t overheat). I think that is about as much (125 watts) as one can expect from the cigarette socket in a typical vehicle. To get to the full 300 watts, one must use a Female Cigarette Lighter Socket extension cable (at least 12AWG) directly to the battery. (Not included in the box – pity). Haven’t tested the direct connection to the battery yet since my extension cable is still on its way.

On l utilise avec notre panneau solaire qui est a notre camping. Fonctionne très bien en plus non bruyant!

Day 1 of using it it works on my laptop running full power with a 180w power supply and no issues so 5 star from me. You can hear the fan Wich makes a wine noise and not a wind noise like I'm used to but as long as it keeps this thing cool I'm ok with it

I bought this inverter in the hope that it could solve a power station charging issue. In my case it did not! The power station a Bluetti AC180, was burning the cigarette lighter fuse. Following a couple of YouTubers advice I went ahead and bought the inverter. The unit plugged in the input on the power station goes up to 150 watts, the Bluetti shuts down the charge and stars back few seconds later. To try to correct the issue, the charging schema was changed to echo mode and a instable input current was activated. So basically I can not say if is the inverter or the power station that is causing the charging issue. The unit itself looks of good quality and well built.

After using 6 months I am writing the review. This is a decent product for its price. I have tested it with different equipment and it worked. The max load I used is 250 Watts. A few good things are (1) It is not too heavy and too big so you can carry it easily even inside a laptop bag. (2) Pure sine will protect your sensitive and expensive devices such as laptops. (3) Cigarette plug is very firm and will hold in place, unlike other cigarette plugs. (4) It has two regular plugs and two USB plugs which is sufficient. There are a few drawbacks for people who are buying to use with a car or SUV. (1) Most cars come with a 10 to 15 amps fuse for cigarette lighter plug. So you can only get 120 Watts if your fuse is rated 10 AMPS and 180 Watts if your fuse is rated at 15 AMPS. Make sure you don't plug anything which uses more than this wattage otherwise car fuse will be blown. (2) There is no external fuse on the wire. If you end up blowing up the fuse of this inverter then you can't replace it by yourself unless you are a technician since the fuse is soldered on the board inside. (3)You can't clamp on the battery directly since there is no extension for clamps which means you have to buy an extension that can cost around $20. (4) Since it is plastic this can get hot in summer but In Canada, we should be fine. (5) The supplied voltage is around 108V to 110V, which means it can take a little bit more time to charge your laptop than a regular wall outlet. Note: If your car supplies power to cigarette lighter plug while the engine is off then make sure to unplug it. Because on power off it also consumes little power to supply those USB extensions. If you worry about blowing up the fuse inside your car there are cigarette lighter extensions with a build-in fuse which will cost around $20. Make sure you test it when it arrives sometime they don't work. Another one I bought did not work but it was in the return window so I was able to return it. If the manufacturer is reading my review. Please fix the issue of the fuse to make it really good inverter. Conclusion If you get it for a decent price then go for it.