My 3.5kw NextGEN's output is between 59-60 Hz, 120 volts, as long it has it least 1000W load. Should load decrease (water heater cuts out), the voltage stays the same, but the frequency rises to 90-100 HZ. What effect would this have on my charger and other electronics?
Naturally voltage matters for both DC and AC appliances. With alternating current, frequency is paramount. Having your frequency off by 50% is serious. I would recommend to have your Genset serviced.