UltraFire Rechargeable Battery Collection

A: Consider runtime needs and device size:
• : Compact (18mm diameter) for 2-4hr high-power use
• : Larger (21mm) for 5-8hr runtime – ideal for all-night operations

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A: Keep at 40-80% charge in fireproof containers. Our anti-corrosion terminals resist oxidation for 18+ months storage (tested at 77°F/60% humidity).

A: Achieve + cycles by avoiding full discharges.

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