Works with Makita battery chargers DC24SA, DC14SA,DC18RA or DC18SC
Conditions battery cells that have been inactivated for extended battery life
Refreshes batteries in as little as 40 minutes
Can automatically detect batteries that need to be refreshed
Refreshing batteries allows you to stretch the overall battery life of your batteries
Therefreshing adapter automatically refreshes the battery. The 193681-8 detectsthe history of the battery by reviewing charging and discharging patterns andthen conditions and optimizes the battery. Fits DC14SA and DC24SA chargers(sold separately).