February

[NikoV6]

Thought we would put another PowerWall in, got a quote, £10,900 fitted!

Only paid £8995 for the full install with gateway last year, bonkers!

Can a DC battery system play nicely with the PowerWall?

[Fintray]

Thought we would put another PowerWall in, got a quote, £10,900 fitted!

Only paid £8995 for the full install with gateway last year, bonkers!

Can a DC battery system play nicely with the PowerWall?

I have been looking at the same, and a DIY battery system could be had for much cheaper and with greater capacity.

[NikoV6]

Thought we would put another PowerWall in, got a quote, £10,900 fitted!

Only paid £8995 for the full install with gateway last year, bonkers!

Can a DC battery system play nicely with the PowerWall?

I have been looking at the same, and a DIY battery system could be had for much cheaper and with greater capacity.

Interesting! I would only need as storage, the PowerWall can do all the tricky house isolating thing if needed!

Don't want to hijack this thread, do you know if this is discussed in another thread?

[Fintray]

I don't think this particular set up is being discussed on the forum.

[Joeboy]

I don't think this particular set up is being discussed on the forum.

Looks like a good proto thread Iain? Would be great to see it run.

[nowty]

The dumber the battery inverter is, the easier it is to add some DIY battery storage. I fear a Powerwall my be too clever for that and difficult to get to a suitable DC tap off point.

[Fintray]

The dumber the battery inverter is, the easier it is to add some DIY battery storage. I fear a Powerwall my be too clever for that and difficult to get to a suitable DC tap off point.

The DC voltage of the Powerwall would also be too high for safely linking a suitable DIY battery.

[nowty]

The dumber the battery inverter is, the easier it is to add some DIY battery storage. I fear a Powerwall my be too clever for that and difficult to get to a suitable DC tap off point.

The DC voltage of the Powerwall would also be too high for safely linking a suitable DIY battery.

Spec says "Internal Battery DC Voltage 50V"
https://www.tesla.com/sites/default/fil ... _en_GB.pdf

[Fintray]

The dumber the battery inverter is, the easier it is to add some DIY battery storage. I fear a Powerwall my be too clever for that and difficult to get to a suitable DC tap off point.

The DC voltage of the Powerwall would also be too high for safely linking a suitable DIY battery.

Spec says "Internal Battery DC Voltage 50V"
https://www.tesla.com/sites/default/fil ... _en_GB.pdf

Duh, I looked up the original Powerwall and that states 350-450v but that will be the dc voltage incoming!

Still wouldn't want to try linking into the Powerwall whilst still under warranty though.

[Moxi]

Could you build a DIY battery to your own voltage spec and then use it to trickle feed the background load via a cheap and cheerful hybrid grid tie inverter and leave the heavy lifting to the power wall ? Effectively you are keeping the systems separate but have the advantage of extra storage

Moxi