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This is a battery adapter that lets Hercules 20V lithium-ion packs from Harbor Freight power Black and Decker 20V cordless tools. It changes the battery fitting, not the voltage, so both sides stay at 20V. The ABS housing and copper contacts are rated for 40A continuous and 80A peak, enough for drills, saws and trimmers. It suits anyone already on the Hercules platform who owns or inherits Black and Decker 20V tools and wants to avoid buying a second battery line.
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This adapter lets Hercules 20V lithium-ion batteries from Harbor Freight power Black and Decker 20V lithium-ion cordless tools. Both platforms run at 20V, so the adapter changes the fitting and not the voltage.
The housing is injection-molded ABS. The terminals are copper, and the internal wiring is 5 mm². It is rated for 40A continuous current, with 80A peak at 18VDC for up to 2 seconds.
It works in one direction only: Hercules batteries powering Black and Decker tools. It is for powering tools and cannot charge any battery. Never connect it to a charger. Take the battery out of the adapter before charging, and charge it on the original charger made for the Hercules 20V battery. Compatibility can vary with the exact battery and tool model, so confirm that your battery is a Hercules 20V and your tool takes Black and Decker 20V batteries.
