Tripp Lite APS750 Inverter / Charger 750W 12V DC to 120V AC 20A 5-15R 2 Outlet

I have an off-road trailer that I use for research. I purchased the APS750 and coupled it with a 105 AH AGM battery in the nose box of the trailer. Away from mains power, it provides excellent run time for several laptops and communications equipment. I keep the battery charged with solar panels off-road and take advantage of the 20A charging capacity of the APS750 when mains power is available. It's a 750W sine wave inverter, transfer switch, and battery charger in a rugged package perfect for my needs. I highly recommend the APS750 for mobile applications where high quality and reliable power is important. I can see where it might make a good emergency power system too.

[Edit Sept. 21, 2011: In my original review I stated that the Tripp Lite APS750 was a pure sine wave inverter. I removed that statement from my review as I learned through investigation that the output is pure sine wave when running on mains power (as expected) and PWM (pulse width modulated) sine wave when running on battery. PWM sine wave should not be confused with the fixed square wave output of cheaper inverters. PWM provides tight voltage regulation (+/5%) and eliminates harmonic noise the static hum you might hear with sensitive equipment if run on a cheaper square wave inverter. PWM sine wave is suitable for sensitive electronic equipment and motors. Anyway, I've been running sensitive radio communications equipment and computers on my APS750 with no problems.]

I use this as a backup power source for my pellet stove. If the power goes out when the stove is on, you get a smoky mess since it relies on a fan for combustion and exhaust. I chose to go the APC route instead of the stove-branded unit I feel more comfortable with a company that knows this business well. I could not be happier with it fast switching, charges the battery fast after the outage too. Ultimately simple as well the switch is either off, or automatic or charge-only. Set it and forget it!

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Here in South Florida, we have what would be described as unpredictable weather... which leads to unpredictable power ;-). Since I work at home on the computer, I need to be able to work through our unexpected power outtages which can last several hours at a time. My UPS just wouldn't cut it for power outtages lasting more than an hour or so.

Enter the king of UPS's, the APS 750! I bought a marine battery at Walmart for under $70 and connected it to the unit. Just the one battery gives me about 5 to 6 hours of run-time for both my desktop and my LCD monitor. If I need more run-time, I can simply connect more batteries in parallel.

Like a regular UPS, the unit charges when it has power, and switches to battery during a surge or blackout. Though the transfer time is a bit higher than a typical UPS, it doesn't seem to matter.

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I brought one of these down to Costa Rica to deal with the unexpected power outages that happen on a semi regular basis. I hooked it up to two 100 amp hour deep cycle batteries. This will run my lights, electronics, wifi, computer, and short use of tools for a day or more (maybe much longer/ never tested). I separate & leave equipment with higher energy draws (like the refrig, pumps, washer, dryer, air conditioner) off the same power out electrical line. When set to operate automatically, this inverter takes over and supplies the 120 volts of electricity from the batteries via inverter when your grid electricity goes off. This unit will also regulate the grid voltage when voltage drops low or spikes high. The batteries are automatically recharged when the grid electricity comes back on. Great product for good competitive price. In my opinion: This is the BEST DEAL on the market. I believe Tripp Lite knows what they are doing when I study their full line of products. I see they also make auto power supplies for medical use. 2012 Update: My Tripp Lite APS has been working flawlessly for 4 years in Costa Rica's humid beach climate. Another Plus: Any electric powered burglar deterrent hooked up to this system will work 24/7 including when the grid is off line.

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This product is truley genius. 750 watts of RMS power at demand. Instant switching at selectable voltage drops. The Tripplite APS 750 is set to run off of my 825amp marine battery when it detects a voltage drop below 95 volts. When this occurs It switches from AC pass through power to a 20 second minimum run off of the battery.

If after 20 seconds the line power is still below the adustable threshold trigger, the unit will continue to run off of the DC battery. When the line power is back and stable, the unit resumes AC in-out pass through "while also charging the marine battery at a 20amp rate" to have it fully recharged for the next AC outtage.

If you're experiencing a bad lightning storm and power is flickering, or you are going through brown-out conditions, this device will switch over the instant the voltage drop is detected and will run off of the battery power for a minimum of 20seconds. ( So there is NO rapid switching of source power.)

I use the Tripplite APS 750 to run the main life support pumps on my saltwater tank. " Four punps at a total of 120 watts." My pumps were geting damaged from the rapid switching of AC power causing one of them to malfunction and hence me having to come home to saltwater on the floor.

(Not a problem anymore!) The Tripplite APS 750 says what it does and does what it says. It may only switch to battery power for 20 seconds once in a year, but I know my floors are dry now and the critical systems on the tank are 24/7/365.

By the way, at 120 watts of draw the 825amp marine battery would last over eight hours before it exhausted its usable amp load. If you need more battery run time you can cascade muliple batteries. The Tripplite has no problem with multiple DC sources. Just follw thier insructions.

AN OUTSTANDING PRODUCT!

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