Watch the list argue about batteries from 1996 to 2024. It starts with debates on alkaline vs. carbon-zinc. Moves to NiCad memory effect in the early 2000s. Erupts in the 2010s over LiFePO4 charging safety, and today discusses solar MPPT controllers for portable QRP. It is a living history of portable power.
The archives are prized for their "homebrew" culture. They contain thousands of threads on: QRP-L Info Page - QTH.NET qrp-l archives