Watts_Up
Well-Known Member
Instead of Tesla offering an upgrade to a bi-directional on-board charger,
I would prefer that Tesla provide a firmware update that's compliant with other bi-directional DC chargers that use CCS like dcBel or Wallbox Quasar. That is a much better solution for Tesla cars that are already on the road. With a CCS adapter and CCS compliant charge port controller,
it's just firmware to allow DC to flow out of the vehicle and telling the charger how much it's allowed to take. Heck,
they can even charge a fee to enable this feature.
I don't think that typical home owners realise the additional complexity of adding an external power source to their home.
Unless you have already a Solar Power system with batteries, so the transition from Grid power to Off-Grid power is already provided,
in the case of someone trying to upgrade their Tesla charger with a bi-directional charger will require a very complex instalation.
As an example, beside the Solar case, when some one wants to use a gas generator in case of power outage, the gas generator is not connected
to the full house but to a switching subpanel where you can provide power only to essential devices, like your fridge, lighting, and heater...
In general, the switch is done manualy, but could be performed automatically like in the case of Solar power systems.
So using your car battery as external power source will requires to isolate the particulars devices that you want to energize
but also you need to isolate thoses electrical circuits from the GRID, like in the case of a Solar System.
I read that the new Tesla Universal Wall Charger to provide Power Share capability will require using a Gateway wich will be a costly system,
such as also describe in this article about the Quasar Wallbox:
Jet Charge to deliver V2G charging capability, allowing owners to turn their EV into a home battery
Described by Jet Charge as “the world’s first bi-directional DC charger”, the Wallbox Quasar
is said to cost around $10,000 for the average consumer and gives EV owners the potential
to at least partially power their home or business using their vehicle’s battery.
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