Amazon.com: 18V DC18SF 4-Port Fast Charger with Dual USB Port Compatible with Makita 14.4V 18V LXT Li-ion Battery BL1840 BL1850 BL1860 BL1890, Replacement for Makita 18 Volt Battery Charger DC18RC DC18RD :
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4A DC18RC Li-Ion Battery Charger for Makita 14.4V &18V Lithium-Ion Battery Power Supply for BL1830 BL1840 BL1850 BL1815 BL1430 Power Tools (4A) - - Amazon.com
Amazon.com: DC18RF Battery Charger with LCD Screen 3.5A Charging Current for Makita 14.4V-18V Lithium ion Battery BL1830 BL1815 DC18RC BL1430 Plug Fast Charger : Tools & Home Improvement