Question, due to reasons I can/want to use my cars V2L system to charge my Pylontech stack.
Important note: I have NO SOLAR setup for now. This would be phase 1 in my ESS system, solar will be done at a later date.
I was thinking about using the AC-IN port on the Easysolar to charge my batteries and after I unplug it, the batteries can be used to discharge and give power to the home.
Ignore all the reasons like “decay of the car battery etc”, this does not matter, for me it’s a purely hypothetical, would be the same thing if it would be a Diesel generator as far as I know.
I drew a quick schematics on how it should work.
So the AC-OUT-1 is linked to my home install on 1 phase (because the Easysolar is 1phase), I’ll have a plug connected to the AC-IN port which I can connect to my cars V2L adapter that delivers max 3,3kW. This should deliver power to my battery, and if possible it can also deliver power to the house/grid as well, but need to keep in mind the maximum of 3,3kW for the discharge.
I’d prefer to charge my pylontech battery stack first and after it’s full, the rest of the V2L can be used for the house at night. When I unplug my AC-IN, the house should start working on the battery-pack.
Is this feasible with this setup or am I missing components?
If you had an off-grid system, I would use the AC input.
However, since you have a grid-connected system and are possibly considering purchasing a generator, I would definitely use a separate 2 kW charger, e.g., Eltek, Huawai, or Meanwell, directly on 48 V.
These have a wide-range input and run on V2L or V2G… or later … with Generator …
You would now always have to reconfigure the AC input via VE Configure so that the Multi accepts the AC input.
What do you mean with reconfiguring? In the first year I’d just run it off V2L, no generator. The generator was just an example that it would be 220V no matter what input source.
Do you have any suggestions on Eltek,Huawei,Meanwell, etc that I could take a look at or compare?
Is there an issue while charging a battery through a 3rd party and discharging it on the Victron?
In grid operation, the AC input of the Multi must accept the grid before it can be connected. At least that’s how it works for us
A simple switch from mains to generator or V2L is not always possible WITHOUT configuring the “mains input” in Ve Configure.
As I said… When operating with ESS, this MUST be done because the Multi will never accept it.
So it may work for you… no guarantee
If it works, there is no reason to purchase an additional charger.
And charging a battery on the DC side is always possible. A graphical representation is another matter… A shunt could be configured as a “DC generator”…
I use the Eltek Flatpack 1 kW or 3 kW to charge my battery… in combination with an Eltek Smartpack control unit in a 19-inch built-in system…
In any case… this way you are much less dependent on the Victron system, and maybe you’ll end up getting a generator instead of the V2L charger after all… you never know…
If you want to get this into VRM or the Remote Console… put a shunt in the 48V line and configure it as a “DC generator”… done.
The best voltage for Pylontech is 51.5V… this should be set on the AC/DC converter.
This prevents the Pylontech batteries from overcharging and the SOC stabilizes at around 90%-94%.
Also note that when you unplug the system, being basically off grid, ESS wont work, ESS needs grid to balance, better to stay on grid and adjust settings in ESS to maximize self consumption
and use a separte charger for V2L as allready mentioned..
