"DEWALT fast battery charger recharges all DEWALT 12V-20V Max lithium-ion batteries. Charges in 1 hour or less for minimal downtime. Diagnostics with LED indicator show battery charge status charged, charging, power line problem, replace pack, and battery too hot or too cold. Volts 12-20, Battery Type Lithium-ion. LED shows battery charge status Charges in one hour or less"
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