Running power generators and inverters in parallel implies connecting multiple units together to share a load and increase overall power output.

The problem with using different battery packs in parallel is that unless the batteries are charged to similar voltages, they could generate a very high and potentially dangerous amount of current ...

The new technology is built-in parallel generating support, in which the electronics necessary to sync the generators and provide N+1 or even N+2 failover is built into the device at the factory.