19.13 Power for the radios

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A single battery size in everything you can (AA): radios, flashlights, NOAA radio. It simplifies your reserve (chapter 2).
A spare set for each radio, plus an extra one for the news radio.
Prefer two-way radios that accept AA batteries in addition to their rechargeable battery.
Rechargeable batteries (NiMH) and a charger that works over USB, to charge from a power bank or solar panel.
Folding solar panel and power bank to keep the phone and radios charged in long blackouts (chapter 9).
Store batteries outside devices you don't use: they discharge and can leak. Check every 6 months.
Heat: the inside of a car in hot weather damages batteries. Don't store radios or batteries in the glove box in summer.
Conserve: low power, moderate volume, turn off between listening times.