these are made from 3 types of salt a magnesium rod and a peice of copper pipe. can run for years without fail.
Crystal Cells Have Been Going for 4+ Years! – Crystal Cells Duration Testing Update – YouTube
Battery Systems
- Saltwater
- lithium ion
- forklift and golfcart battery
- https://batterybro.com/blogs/18650-wholesale-battery-reviews/77975750-how-to-store-18650-batteries-safely
- ford escape batteries seem really good for winter applications – nickle hydride
- hydrogen fuel cell and tanks
- natural gas – corncob tanks ?
Food Storage
https://www.costco.com/Emergency-Food-ARK-1-Month-Supply-390-Servings.product.100102033.html
Kenetic Energy
- flywheel
- hydro storage
- storage of weighted blocks above and below ground.
Thermal
- hotwater tank
Chemical
- hydrogen
- methane – biogas above/underground resovior for storing methane.