What better way to close Battery Week than a boat trip up the Amazon? There, remote villages are reducing their reliance on dirty, noisy diesel generators by turning to batteries and solar panels. That’s doing more than bringing light: Batteries are helping radically improve the quality of life.

Today’s newsletter takes you on a cruise to see the next frontier of battery deployment. Plus, your weekend listen with London Mayor Sadiq Khan and your weekend watch on — what else? — batteries.