The Gocycle 2A charger and 4A Fast charger both work in the range between 100V and 240V supply.
When charging the Gocycle from a 12V supply you will need an inverter.
There is no inverter that we can recommend but we are aware that many of our customers use inverters in RVs and boats, and have not had any reports of problems.
Please check the information present on the charger.
If you have any questions, please contact Gocycle Tech Support using our contact form.