Title: Not Applicable to the HP818 battery for my drill.
Review: I was lead to believe that this charger works for "slide type" 18 volt B&D; batteries. Not so! This charger does NOT work with the HP818 battery used on my cordless drill. This charger accepts batteries with strait prongs/leads on the battery not ones with any sort of curved connection.Your battery is labeled on the bottom. If it reads HP818, this charger is not for you.
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