Batteries

Recommendations for buyers

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  Check the C-Rating (Discharge Rate)

  Capacity (mAh) isn't everything; you must check the discharge rate (Amps). High-drain devices like vapes or power tools require high-amp batteries to function safely without overheating.
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  Verify Protection Circuits (PCB/BMS)

  For loose lithium cells, check if they are 'Protected' or 'Unprotected'. Protected cells are slightly longer but include a safety chip to prevent overcharging and short circuits, which is essential for flashlights.
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  Analyze Weight vs. Capacity

  There is a direct correlation between chemical density and weight. If a battery feels suspiciously light but claims a massive capacity, it is likely a low-quality fake.
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  Chemistry Compatibility

  Never mix battery chemistries (e.g., NiMh with Li-Ion) in the same charger or device unless explicitly supported. Voltage differences can damage your electronics instantly.