World's largest battery - GIF

World's largest battery.

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Previously:

Dropping lithium battery in water - GIF
Manufacturing lead-acid battery grids - GIF
Pedal battery Amazon delivery truck - GIF
Repairing a battery terminal - GIF
Solar battery storage racks - GIF

More details here. It's a humongous grid-scale battery when fully built out it will supply 850 MW.

Unfortunately the article doesn't mention what kind of batteries they are. I have high hopes for iron flow batteries no exotic metals needed.