They had a range of converters over the years. THey were in the 3000 watt range, then moved on to 5000 watts. The latest mode had 2 fans at both ends. THe previous model had a single fan at either end. None of the converters ever reached their stamped output. Thinking it was a real inverter with a diode in it effectively cutting hte output in half do to the nature they operate. so a 3000 watt unit was really 1500 out and 5000 was more like 2500. I ran 17 amps at 117 volts.
Regardless 17 amps seemed to be the amp output limit, but you could crank up the voltage without worry unless you pack started to sag or dropped a cell.
The hard core prius users who went for miles n ev mode used 2 converters in parallel to keep up with demand of the electric motor. I wanted to get a 2nd converter myself, but never pulled the trigger.
Before they went out of business in the US he was selling the kit minus the batteries for 995. I think he should of done that from the start so most users would go to their local walmart or auto store and buy 4 deep cycle batteries and chargers for the power supply. Then later on team up with a good lifepo4 battery company or let end users do all the experitmenting at their own risk.
Here are some cliff notes:
1, used the gas engine to accelerate and use the electirc to maintain or glide.
2, precharge your vehicle hybrid battery before parking of a day or before you start off in the morning.
3, precharge the bat too when you leave work, business, etc.
4, start planning your route and decide if you are going to turn off the converter to regen or just coast.
5, give your battery bank a few cycles to build up and use it gentle the first 12 runs.
6, watch your vehicle for any strange behavior such as doing wasteful stuff with the extra electricity. For example the prius would use the electric motor to spin the gas engine when the soc was too high.