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RE: R&D at Tesla, is projecting $100 per KWH battery packs by next year, which will be perfect for off grid homestead power!
That is part of the cost savings, less material needed. This is a good upgrade!
:)>
So these new ones are alot lighter too?
Yes, costs are improved by better power to weight ratios, which reduces the amount of material required.
:)>Just think where they'll be in 10 or 15 years, do you have any idea or is that above your paygrade?
At this rate, they should push it under $50, but they will be at the limit of this technology. It will slowly be taken over by solid Sodium Ion solid electrolyte batteries that I posted on about six months ago. Less energy density, but the cost should be much lower, maybe in the $20 range.
The right course would be the Vanadium Redox flow battery, if they get smart.
:)>What in the world is the Vanadium Redox flow battery?
The answer to a transportation battery. The fluid can be exchanged for charged fluid, similar to filling a gas tank. That was a service station can recharge a car in a minute or so. The fluids are permanent, and do not degrade, so exchanging them is a safe thing to do. The old fluid can be recharged and pumped into the next car. Stations could be run on solar panels.
The Vanadium redox battery is a flow battery using ionic vanaduim in sulfuric acid across an osmotic membrane.
https://en.wikipedia.org/wiki/Vanadium_redox_battery
Vanadium redox battery
The vanadium redox battery (VRB), also known as the vanadium flow battery (VFB) or vanadium redox flow battery (VRFB), is a type of rechargeable flow battery that employs vanadium ions in different oxidation states to store chemical potential energy. The vanadium redox battery exploits the ability of vanadium to exist in solution in four different oxidation states, and uses this property to make a battery that has just one electroactive element instead of two. For several reasons, including their relative bulkiness, most vanadium batteries are currently used for grid energy storage, i.e., attached to power plants or electrical grids.
The possibility of creating a vanadium flow battery was explored by Pissoort in the 1930s, NASA researchers in the 1970s, and Pellegri and Spaziante in the 1970s, but none of them were successful in demonstrating the technology.
Actually there are six ionic states for Vanaduim, not four. There are practical transportation batteries in Australia since the late 1980's
They are commercially available for power storage at power plants.
https://www.australianvanadium.com.au/vanadium-batteries/