I obviously thought this would be about back-up power for buildings. The author is using batteries as an metaphor for software deployment readiness I think.
lol I am. I think I should start coming up with better titles
About the topic, some say Django is kinda rechargeable. Lots of pieces can be toggled / swapped and the whole keeps coherency somehow.
Same, especially after Tesla started to talk about batteries being part of structural element. I often wonder if we could use "walls" for more than just support + surface.
I use my walls as thermal mass by insulating from the outside. This acts like a thermal sink keeps the interior temperature from fluctuating on hot or cold days. I need 3 days of extreme temperature to move the interior temperature.