This is the AIMS 4000 Watt Low Frequency Pure Sine Wave Inverter Charger.This inverter boasts a 12,000 watt surge capacity for 20 seconds and will deliver that sheer amount of power on demand. This is the 12 VDC to 120 VAC version with single bolt type DC terminals that will accept 1/0 (00 AWG) cable, you should use two sets.
The 4000 Watt 12 Volt Pure Sine Inverter Charger has a 100 amp four stage smart battery charger, providing rapid charge to any type of 12 volt battery configuration you may have. The built in transfer switch boasts a lightning fast 10ms transfer time, which you can see in the manufacturer's video above.