Recent content by avirtuos

I've been logging my power usage (EV vs everything else) by time of day for a year now. I have 3 powerwalls and a 10kw solar array. I'm in NJ with PSEG and here is my analysis of the TOU rate plan. In short, not worth it as we would save about $3 a month over a full year and that includes...

I powerwalls drain doest vary it's an even slope so either it's always running it's cooling (moving parts) ors it's never running them. I'm pretty convinced it's the inverter (a solid state part btw ;) )

That sounds like a great price! Powerwalls are 100% fine in NJ. I'm in NJ and just had 3 installed last week (there is a huge backlog though). Also, the NJ SREC program is closing to new installs very soon so don't delay. Also, don't let Tesla take your SRECs. Assuming the SRECs avg $150 this is...

Sorry but this statement makes false assumptions about sold state vs moving parts it also assumes that the powerwalls, at idle, run their cooling loop (they do not, I've tested with a decibal meter you can easily tell when the pumps are running with any urgency). As for solid state vs moving...

A 2018 MacBook pro uses about 112wh when watching YouTube videos at full brightness for 24hrs. :) So a powerwall seems to be nearly 3x that in vampire Drain when in a perfectly climate controlled space. Tesla can do way better unless some of this loss is just chemistry. I really wish Tesla...

Good to know it's the norm but damn that sucks. Really can't depend on these for 'long term' storage then. At best it's days or a couple weeks before those losses really cut into efficiency. As an aside, we failed our electrical inspection today. Yay Tesla for violating basic building codes.

I shouldn't be surprised but here I am, surprised. I've had my 3 powerwall 2 units up and running for 5 days. I finally got around to writing some scripts to query the backup gateway APIs and log the state of charge, load, solar, and grid power figures periodically and noticed a couple things...

Not sure which part of your post is sarcasim and why. My powerwalls are getting installed tomorrow... Ordered them Oct 2017 along with solar both from Tesla

In general Lithium batteries dislike being at low or high SOC and also dislike extreme temperatures. However changing chemistry, charge and discharge rates, and having a 'buffer' of capacity that is not user accessible all augment this. Powerwalls use a different cell chemeetry than Tesla cars...

Also, from your link.. "You should pin anytime you want to be relatively certain of the remote host's identity or when operating in a hostile environment" Relatively certain... Not the same as true authentication or chain of trust.

See my updated post, pinning doesn't save you when the malicious app replaces the bundled cert. It's a good step but not a magic bullet since neither iOS note Android offer secure storage.

That's not entirely true. SSL only protects you if someone can't inject their own trusted root CA. A common way people 'man in the middle' cell phone apps is to get you to install an app that installs a malicious root CA (certificate authority). This then fools all apps on your phone into...

Sounds like cold weather affects to be honest. Did you notice limited regen or power indicators at all? Have you been using the heater more?

Its not about the sensors, the hardware they use to evaluate the models (GPU or otherwise) are extremely important as even when using the exact same software (models) and pre-recorded sensor input...simply changing which GPU type you run your model evaluation on can cause differing results. Some...

I highly doubt this. AP1 hardware was produced by mobileEye and is substantially different from AP 2.0. It is unlikely that the same machine learning models would run effectively in the AP 1 performance envelope.