?

Log in

No account? Create an account

Pedin · Guren


My Recent Projects

Recent Entries · Archive · Friends · Profile

* * *
I have been busy in RL working on home maintenance. The 16 year old batteries that power my house at night have come to the end of their life, wit htheir storage capacity less than half when they were new. But, 16 years for lead-acid batteries is a great run, so no complaints other than batteries are no longer recycled in the U.S. - thy are shipped to China to be crackeded open with human wielded seldge hammers to recover the lead. The acid flows into acid pits. Not good.

This time the tech has advanced and new battery chemisty is available. I just took delivery of 24 Aquion batteries (http://aquionenergy.com/) and now have to run off and rent a hoist to move them into place. These are managanese and nanocarbon.
My temperment:
cheerful cheerful
* * *
* * *
[User Picture]
On October 8th, 2016 06:35 pm (UTC), grey_lady commented:
Looks like a project and a half!

Good to 'see' you - and a happy belated!
* * *
[User Picture]
On October 12th, 2016 01:47 am (UTC), johnpalmer commented:
I don't do any electrical generation. But I still have a stab of "ooh, not fair, he's getting all the cool toys!"

(And I wonder how this stacks up next to Tesla's home battery? It looks like they're far bigger and clunkier - but also far better.)
[User Picture]
On October 21st, 2016 07:13 pm (UTC), elimloth replied:
Aquion vs Tesla Li-ion batteries
There are several differences. The Aquion manganese/saltwater/nano-carbon chemistry is lower density than Lithium Ion chemistry. So yes, for the same capacity the Aquion batteries are bigger than the Tesla ones. That works out OK in home usage. The positive for Aquion chemistry is that it does not suffer thermal runaway ever. The Tesla home battery system has a lot of active individual cell cooling tech to stop the runaway explosions from happening.

Here's a review of several battery systems: http://www.cleanenergyreviews.info/blog/2015/11/19/complete-battery-storage-comparison-and-review
[User Picture]
On October 21st, 2016 09:36 pm (UTC), johnpalmer replied:
Re: Aquion vs Tesla Li-ion batteries
"Thermal runaway" definitely didn't sound *good* but then you got to the part about "explosions". And then I flashed on https://xkcd.com/651/, and realized that if a laptop battery has the energy of a "grenade"... yikes.

[User Picture]
On October 21st, 2016 11:18 pm (UTC), elimloth replied:
Re: Aquion vs Tesla Li-ion batteries
A laptop LiIon batter hold somewhere around 200Wh of energy. An off-grid home system like mine hold 52,000Wh of energy. I really do not want any significant amount of that energy released suddenly.
* * *

Previous Entry · Leave a thought · Share ·