Ful load maximum operating temperature: 40 degrees Celsius 

     Battery low voltage shutdown: 9.7 +/- 0.5 Volts

     No load power consumption: <1.45 dc amps

     Full load efficiency: 90%

'Lo All, Since I am not familiar with the AIMS inverters, I went to their website to look at them. I found a troubling specification in the PWRIC150012S (1500 W sine wave inverter w/ 10A charger and transfer switch). Copied from their website: Ful load maximum operating temperature: 40 degrees Celsius (automatic shutdown) Now, 40 Degrees Celsius = only 104 degrees Fahrenheit. That is almost ambient air temps here in Florida, so the units would almost have to operate in an air conditioned environment. If the unit is under load and the ambient air is fairly high, I would expect the unit to shut down at somewhere less than 100 F ambient temp, all depending upon the actual load and ambient air temp. Point being: I would never install it in an engine room or other high-temp area if I was running anything critical on it, such as nav computer or refrigeration. And an observation: Copied from their website: Battery low voltage shutdown: 9.7 +/- 0.5 Volts No load power consumption: <1.45 dc amps Full load efficiency: 90% Shutoff at 9.7 V (9.2-10.2 V DC) seems to me to be very low, and means that the battery (bank) is totally depleted - possibly to the point of damaging it or significantly shortening its life. Yes, I KNOW that we ALWAYS monitor the battery bank(s) and NEVER let them get too low..... ;-) No load power consumption seems somewhat high? http://www.aimscorp.net/PWRIC150012S.htm Just some thoughts. Take care and be safe. Wayne Celestial Albin 43 Sundeck Near Panama City, FL