What is the correct charging temperature range for the battery?
The battery should be charged when the ambient temperature is between 18°C and 24°C (65°F and 75°F) for best performance and battery life. Do not charge the battery at temperatures below +4.5°C (+40°F) or above +40°C (+104°F), as this can cause serious damage to the battery. (Page 7)
From the official Black & Decker BCD704C1 Drill/Driver manual, page 7
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