Review on Upgraded 18V Battery Charger for Makita - DC18RC Replacement Charger with LCD Display & USB Interface - Compatible with Makita 14.4V-18V Lithium Ion Battery BL1830, BL1840, BL1850, BL1815 by Jonathan Abreu

This no-name replacement charger might be a little better than the Makita original. And it's about half the price. Charge times for my 6Ah batteries are about the same as this no-name unit and the LCD screen with accurate voltage and current readings is an improvement over the original charger's LEDs. This device also stands out when compared to other similarly priced "replacement" chargers and is one of the few devices with an LCD display that shows charging progress.