Cordless Power Tools & Brushless Motor Mastery

Why should you never charge a lithium-ion tool battery when cell temperatures are below 32°F (0°C)?

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 Correct IncorrectBelow freezing, lithium ions cannot intercalate into the graphite anode fast enough, causing metallic lithium plating that permanently ruins capacity and creates short-circuit hazards.

Why should you never charge a lithium-ion tool battery when cell temperatures are below 32°F (0°C)?

• The charger indicator LEDs will burn out
• The plastic case will freeze and crack in half
• The battery charger will automatically convert to 240V AC
• Metallic lithium plates onto the anode surface, permanently destroying cell capacity and creating short-circuit hazards