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this post was submitted on 28 Apr 2026
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Solarpunk technology
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So it's a rust battery? Because that's what happens when iron gets watery. It rusts.
I mean if it works, that's great, I just find it funny.
This is getting out of hand, now they are refactoring batteries to use Rust too
Rust is designed to work at the hardware level.
And Rust is both secure and efficient, am I right?
No leaks either!
Rust batteries are older than you may think
Nickel-Iron rechargable batteries have been around for over 125 years, and are sometimes called "Edison batteries" because they were produced by Thomas Edison's battery company.
The active material of the negative plates is iron oxide (i.e. rust). They could more accurately be called iron-oxide/nickel-hydride batteries.
They have some disadvantages especially for portability (liquid electrolyte and poor weight to charge ratio) and require regular topping up electrolyte like older models of car batteries. However, they are tolerant of frequent cycling, undercharging and overcharging, and can last 20-30 years in continuous use.