Amazon.com: 2 Pack 18V 5000mAh Lithium-ion Replacement Battery for Makita and 14.4V-18V Replacement Charger for Makita BL1830 BL1850 BL1840 : Tools & Home Improvement
Amazon.com: 18V Battery Charger for Makita,DC18RC Replacement Battery Charger with LCD Display USB Interface for Makita 14.4V-18V Lithium Ion Battery BL1830 BL1840 BL1850 BL1815 : Tools & Home Improvement
Amazon.com: Anopiw DC18RC Replae Makita Charger DC18RC to Charge14.4V 18 Volt LXT Lithium-ion Battery BL1815 BL1850 BL1840 BL1830 LXT-400 BL1820,Replace for Makita Charger DC18RD DC18RC DC18RA DC18SD DC18SF : Tools & Home