Charge Tank (and DigiNow/other fastcharge) owners, can you post your usage experiences with this accessory? Is it glitchy? Does it work as advertised? How long does it take at a L2 station to charge from about 10% to 80% using this?
Most tested and reliable is the Hollywood Electrics Elcon Kit - With the onboard allows 6.3 kW charging for a 10-80% on a 4 brick in about a hour. You have to carry these in side or top cases. It has been available for 4 years now and many Zero owners have these.
Next is the ChargeTank from Zero. Came out about 5 months ago and reliability seems good. With the onboard allows 3.8 kW charging, for a 10-80% charge in about 2 hours. This can not be used on bikes that have or will want a PowerTank. But it is integrated into the tank area and a good choice if you don't need the most power and don't have the max battery.
Next is the supercharger. This is being made by a small company and while perhaps the best and most powerful product, has the growing issues of a small company. There have been some testing issues and right now there is a long backlog of orders with at least a 6 month delay, and no communications person to let everyone know the progress. But it is capable of 10 kW on it's own from an RV type plug. But at this point if you need something soon, you need to look elsewhere.
There is always the accessory delta Q charger. It is only a 1 kW unit, but can cut charge time in half for now, full charge in 4 hours with the onboard. But not good enough for traveling, just for faster charging at home really.
Call Hollywood Electrics and discuss your needs, vs time, cost and storage space and they can help you choose an option best for you as they carry all 4 types of chargers listed above.