BESTEK 1000W Car Cigarette Lighter DC Adapter

Very light and compact, powerful at the same time. 7A grinder started with no problem, 150W fridge also starts and works without any issue or overheating. Love the unit. One thing to note that it can not be left connected to a battery for months even when it is powered off. It draws around 30mA to power USB ports, which are always on, and that would drain 8Wh a day.

Excelente inversor

I have so many thoughts on this inverter, where do i start? I paid $138.99 in December 2019. first off it does work and yes it puts out the clean pure sine wave power. I first bought the Bestek 300 watt pure sine wave inverter and liked it so much that i bought this unit when it came out & only had a few reviews because i had faith in the brand. I saw power out put as rated by my Kilo-watt meter read as low as 102 volts with a heat gun loaded up 950 watts and as high as 117.5 volts with just about no load, the meter showed 59.9 hertz most all the time with occasionally reading 59.8 and only a few times did it read 60 hertz even Pro's and con's! here we go Pro's it has powered everything i wanted it to and more, (one item at a time) my kitchen LG refrigerator (4yrs old) & garage fridge (13 yr old old style compressor type high load starting) a 6yr old HE front load washing machine & my house furnace, yes the home furnace! i rewired the furnace by removing the Romex and wiring a 12 gauge heavy duty grounded plug as its input then wiring the Romex into a standard plug the the heater can plug into. My furnace is a high efficiency 90%+ variable speed natural gas furnace that uses about 400 watts on the low and 900 watts max on the high heat setting. i powered up the furnace and let it run two heat cycles of 15+ minutes each in the low setting over a 45 minute timeline and the little Bestek worked great. the inverters fan would vary its speed with the load, but i never even felt hot air came out. USB ports have power with the unit powered off but of course hooked up to a battery. Battery power input listed on the front does seem real accurate. The output wattage also seems to read correctly accordingly to my Kilo-meter. this even powered up the old garage refrigerator that takes at least 1070 watt load to start it, once it did i ran that fridge for over a hour, on another day i ran my kitchen fridge for 4 1/2 hours with no problems from a fully charged Interstate marine deep cycle battery. Con's #1 at a draw of 950 watts the voltage read by the kilowatt mater showed 102 volts! The fan runs as soon as you power up the inverter even with no load applied (unneeded power use). The little green power button light seems like it is only 1/3 lit, so its a little hard to see. The power output that it list is it's putting out 115 volts but that does not reflect the real voltage output. The supplied power cables are really short but they worked fine with out getting even warm for me. The 4 fuse's it uses are a ATO (automotive style) fuse rated at 50 amps each, and i have never seen that high of amperage in that style of fuse and i worry i would have trouble getting replacements locally (luckily it does come with 4 extra's). There are no mounting legs or tabs of metal sticking out to allow you to mount this inverter to a solid surface. In all reality I'd really give this 4.5 stars if possible, but i think i can trust this unit as a I have run it a good amount testing it out over the last month, i ran it hard & in case it failed i was going to return it but it was good enough for for my needs, knowing i would not run it at even 60% of its capacity. Edit 1/2022 i realize i should have mentioned to always over size your inverter by a good margin say 50% larger than you need. I Have upgraded my battery back up system early 2021 i built a different semi portable system using Battle-born 100 amp hour battery & installed a Giandle 2,200 watt pure sine wave inverter. the large Giandle's fan doesn't even need to come on until about 800 watts pulled wow! is all i have to save, lead is truly dead for me! i still have this Bestek and its still working fine, sorry for the rambling review as i dont give many but for a product that i do like and was worried about its worth my time and hope it helps you.

So portable and easy to use. I needed a PSW of at least 1000 watts. This is so easy to carry and use. It's light weight and has a nice little handle to carry it around. The display has all the usefull information you'd want on an inverter. Really happy with this unit.

I was initially a little skeptical about this inverter when I saw it's price vs the rated capacity and that it is true sine. I can definitely confirm this is a true sine inverter. I plugged a 120v to 15v AC transformer into this inverter and them put my oscilloscope on the output of the transformer and it is indeed a true clean sine wave just as you would have out of your household AC outlet, or the popular inverter style generators. This does have a cooling fan that runs all the time, noise wise it is not too bad at no/low load. The cooling fan does ramp up under full load and definitely becomes audible at load. I ran a space heater off this inverter which at it's high setting draws about 1100 watts and the inverter had no trouble for the few minutes I ran it. I ran the same space heater at it's low setting, approx 600w for well over an hour as a test and the inverter had no trouble powering it. I would replace the included cables if you are planning to use this at it's full rated 1000w. The cables that this comes with are 10mm2 gauge written on the cable, or 8 AWG equivalent. They become noticeably warm at full load and cause a significant voltage drop at the inverter. When doing my 1100watt space heater test they became quite warm and caused the battery voltage which measured 12.8v at the battery to drop to 11.1v at the readout on the front of the inverter. I would not use the included cables for much more than half of the rated capacity of this inverter. For this fuses this inverter uses 4 of the 50amp "medium" sized automotive fuses. I have to assume wired in parallel inside the inverter, so good for up to 200amp. You might want to find a source for these and pick up a few extra as this seems like an uncommon amperage and you might have trouble finding some in an emergency. I did not know these size fuses went over 40amp. The inverter does come with a set of them preinstalled, and another set of 4 of them in the bag in the box, so you're set for at least one set of fuse changes if the need arises. In a pinch you could probably get away with putting 4 of the more common 30 or 40 amp fuses in, since at full rated load this should not exceed much more than 100amp from the battery. I am really impressed by this inverter for its size/weight/power output capability and the fact that it is a true sine wave.