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crashintoty: ChrisD is right: overheating can probably be managed with some fans but the greater risk of damaging your batteries is operating (particularly charging) the powerwall in subfreezing temperatures. I think Seattle sees some times below 32F on clear winter days. But, as you noted...

Between 40F and 80F degrees is the sweet spot for 18650 Li ion. No special insulation required, except maybe for excessive humidity in your climate. Maybe modest ventilation to moderate temperature in the garage, especially if you have inverters in there too. My two cents.

I'm new to using Batrium but maybe try this the next time you're top balancing: Menu --> Hardware --> Shunt --> Edit --> Metrics --> Full --> Ok --> Save.

Fulstein: Have you stress tested your battery build? Perhaps start with more solar to establish the system and then parse out the steps for adding wind. If you're stuck with 12v input from the rectifier, you'll have to boost somehow or suffer elsewhere. Not efficient but can be made to work...

Wobbleszo: Sorry to tease you about the non-OCD cable management. I didn't mean to be harsh. From the photos, all evidence suggests you enjoy your hobby, which will keep you off the streets at least. <-- you see, I can't help myself. The 36v system was the one I studied the longest. There's...

Great potential there. That one photo of the 36v system isn't for the OCD crowd. :-)

Serg: To part of your initial question, Basically, with your pipsystem, if your batteries are full and your house isn't using all the solar energy available, powersimply isn't created. If no demand, the charge controller slows or stops energy production fromthe solar panels.

Yes. It's a bit boutique, but I had to dig deep and buy the batrium too. Waiting on delivery. Shipping from the down under half of the world takes longer for some reason. Batrium has the capabilities I need to run a safe powerwall, so I will happily wait.

Adam: Nice, clean setup. Plans for BMS? Do you mean Amps (A) or Amp-hours (Ah)? Mark

MPT-7210A charge controller would be much appreciated.

If I may ask another, but related, question: I am looking for ways to better insulate the packs electrically to avoid shorts and blown fuses. That just seems a lot of exposed metal. I figured I could use jumbo heat shrink, like the e-bike people sometimes do, but was also concerned about the...

In this application I'll be shooting for room temperature < 30c sounds safe enough, if hopeful.

The tentative plan is to use the hot-Sanyo wall to run the cooling fans in my tool shed, where I plan to install the battery system. But at 4S, the Sanyos would never be charged past 3.7V, therefore keeping them cool and relatively safe. Burning my shed down would be embarrassing. By the way...

I see, Korishan you're suggesting I create my great Sanyo wall of power and use it to process cells. I like that idea too. Mark

It seems to me there ought to be something that can be done with fully functional but red-hot Sanyos. I'm still processing batteries and will probably be at that for a while longer. My plan is to locate my power wall/shelf in my tool shed after cleaning and rearranging it. To use my tool shed...

Here's a follow-up article with video Mark Testdriving VW's groovy electric van of tomorrow http://money.cnn.com/2017/09/01/technology/driving-volkswagen-id-buzz/index.html

Agreed, Major. Still, it's a cool concept.

Hey Jehu: I saw this on CNN this morning. Volkswagen will revisit its Microbus history, but with a twist. Mark Here's the link to the article. http://money.cnn.com/2017/08/19/technology/volkswagen-id-buzz-production/index.html Mark