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Reviewed in the United States on July 23, 2023
Great power backup. I also have a 2KW gas generator, but I wanted a generator that would work immediately inside the house, and could run all night without the engine noise and possible CO fumes. Because power outages are rare here in Florida unless a hurricane strikes, the FF generator might sit for a year with no use. So I decided to give the FF a permanent job as a UPS. The max power the UPS can handle is 1,100 watts, the available wattage brought in with the power cord. The generator sits near the kitchen, plugged in to 120 volts, with the fridge plugged into it, 24/7. We do get random power hits, so this protects the fridge circuits as well. I ran a test and the FF will power the fridge for 20 hours, which will take care of any transient problems. A voltage test shows 121 volts AC input with 120 volts AC, 60 Hz out in UPS mode. The 3rd picture shows the UPS mode. Same power in as out, with 100% battery available.I have (2) 100 watt solar panels to help charge the battery during long outages, and the best I can do is get 80 watts from each panel. Is that because they are rated under laboratory conditions? Also, there is about a 9 watt loss bringing the power in thru the solar input. The 2nd photo shows 168.2 watts from the panels, but the next photo shows only 159 watts are usable. I'm assuming 9 watts was absorbed in the circuitry for the conversion.When using the FF during a power outage, the output voltage is only 100 volts @ 60 Hz. I thought this was a little low, so I measured the voltage on my CyberPower 1350 Watt running on batteries. It measured an even lower 92 volts, so it looks like the FF is doing pretty good compared to other makes.The LCD screen stays on as long as something is drawing power from the FF. The screen will dim after 5 minutes of no buttons pushed. Momentarily pushing the main power button restores the screen to full brightness.
Techie customer
Reviewed in the United States on June 2, 2022
I haven't had the opportunity to really kick the tires on this but what I have done is all good. It is about 48 pounds. I have another model, a 1KWH that is about 1/2 the weight. A 1KW inverter will handle most power tools up to and including most circular saws. A 500 will not handle some. I have looked at the lighter one for replacing extension cords in some places. I do radio support for hikes, bike rides and marathons, in the past I have used lead acid batteries. Most of our equipment runs off 12V DC and were always careful on usage. With this, I can take a 12v cooler, any radios, and have more than enough power. I use a popup tent and have a floor and sides option. The two batteries are great weights to hold it down. (side benefit). I carry both for backup. I also do elections. This time I carried the one in the car. A power failure, I could cover. The USB chargers are great. I have not tried charging with the car, solar or wind, but see no reason to be concerned. The biggest negative, the one thing i looked for and could not find was a unit that had a 12v out at greater than 10A, some of our radio equipment uses more. I can cover that using my 120VAC to 12V 35A power supply which is in my go kit, but it does have a small inefficiency in going battery to 120Ac back to 12 DC. An overall great buy.
PQ
Reviewed in the United States on October 5, 2022
I have this as a power backup for a dorm-sized refrigerator and freezer. Max wattage draw combined about 110 watts when running, but each has a short duty cycle. I need the backup because of the California planned and unplanned blackouts. Based upon the front display, this thing will keep the units powered for an estimated 20-24 hours. It is a bit heavy, but not nearly as much as if it had a lead acid battery. I didn't have any trouble moving it around. The ergonomics are well designed. My only concern is that although the pass through voltage is line level (120VAC), when the unit kicks in it's only 110VAC (verified with a multimeter). That means it increases the current a bit which isn't good for inductive loads, but I imagine most appliances have a 10% voltage tolerance. Overall, if you can afford the expense it's well worth it. Quiet, and you can monitor it continuously on the front panel. Switchover to battery power is essentially instantaneous and seamless. I'd buy another if it weren't so expensive.
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