Ampinvt 1200W Pure Sine Wave Inverter with AC Charger, DC 12V to AC 120V Output,UPS Backup Power Low Frequency Inverter for Lithium, Sealed,AGM, Gel,and Flooded Batteries

es excelente para respaldo de energía, no recomiendo aire acondicionado debido a que no esta diseñado para algo con picos tan variantes, alimentamos equipos de redes y hasta ahora un excelente desempeño

hay fallas incluso con poca carga es in inverter caro y de baja calidad

I am using two 1200 watt versions. They have been hooked up continuously for two years now charging two separate 8-battery banks comprised of 12V deep cycle SLA 97 AH marine batteries that were all purchased at the same time. I did this setup to have backup power that could be charged and maintained via a/c power and act as a backup for key systems. It does so by immediately switching to battery power when wall power goes out. When there is power from the wall the unit output functions as a pass-through for that power while also keeping the batteries charged or recharging. It has worked so well that I am buying their solar chargers too. So, here is my setup and what you might want to know: 1. There is a setting in the instructions on how to set up for Standard Lead Acid Batteries. After doing some research I decided to pair 8 deep cycle 97 Amp Hour 12 Volt Marine batteries with each unit. You have to set the the charge current at 80% from what I recall but I cannot find the settings right now to verify. This setting matched the charging current to the battery bank size and type. You just hook them up in parallel. I also purchased short and thick gauge connectors from Interstate Battery. After that you hook the positive lead from the charger to one side of the bank on the positive terminal and the negative end to the other end of the bank on the negative terminal. This will keep all batterie in an even state of charge. 2. It costs around $8/month to keep the batteries topped off at around $0.14/kwh. 3. When the power goes out this thing does not miss a beat. You cannot even tell. No blips no nothing. I have security cameras, deep freezers and incubators plugged in and they just keep running as if nothing happened. 4. Two year old SLA Deep Cycle batteries are at 97% charge state according to the display. 5. The only bad part is the relatively loud fan. I have my banks in two parts of the house so hear them a lot. The good news is they run slower most of the time. There seems to be different speeds. After a while the noise drones in the background and is only noticed when the speed changes. 6. You will need to buy a three-pronged plug and wire to get power from the wall to the unit. I checked the configuration beforehand and found that it was fine and not reversed as some people reported with the 800W version. That was just not the case with the 1200W units.

The inverter is functioning correctly so far. It is currently paired with a 300-amp battery and is providing backup power to a house.

Excellent equipment, very pleased with the performance and robustness of the equipment.