Alkaline or lithium for an emergency kit?

Lithium. Longer shelf life (10+ years vs 5–7), lower temperature tolerance, and no leakage risk that can destroy a radio during storage.

Can I mix old and new batteries?

No. Mixing drains newer cells prematurely and increases leak risk in the older ones.

How many spare batteries should a family of 4 keep?

Minimum 16 AA and 8 AAA for a 72-hour blackout — two full swaps for headlamps, radio, and children's lights.

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AA and AAA Batteries for Emergency Kits

Rotate a full pack of fresh alkaline or lithium AA/AAA every 2 years. Lithium primaries handle cold and humidity better, which matters for flashlights and radios stored in a garage or car.

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Często zadawane pytania

Alkaline or lithium for an emergency kit?: Lithium. Longer shelf life (10+ years vs 5–7), lower temperature tolerance, and no leakage risk that can destroy a radio during storage.
Can I mix old and new batteries?: No. Mixing drains newer cells prematurely and increases leak risk in the older ones.
How many spare batteries should a family of 4 keep?: Minimum 16 AA and 8 AAA for a 72-hour blackout — two full swaps for headlamps, radio, and children's lights.