I researched this product knowing I would use an inverter in conjunction with four 6v golf cart batteries. 2 series and 2 parallel giving me 440 AH.
I full time in an RV and use 10A worth of solar panels to recharge these batteries. I recommend this inverter to anyone who needs to confidently run AC items up to what a normal outlet in a home would run.
For example, with a full battery charge and a days full sun on the two solar panels I ran the computer/monitor and a laptop for 14 hours and my system voltage went from 12.7V to 12.1 volts.
Obviously it was excessive use for a normal day, but it was a test of the battery bank, inverter, and about 60A of solar charging replacement throughout the day.
There is a high pitch frequency that is present while on, but it is quickly drowned by a computer fan, or whatever it is your using it for.
There is a technique I read about twisting the output positive and negative wires before ataching it to the inverter to reduce the noise, but I didn't twist the wires to verify.
I used 2/0 welding cable for battery interconnect and to the inverter.
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