Amazon.com: Amsbat 3000mAh BL1830B Battery Replacement for Makita 18V Battery Lithium ion BL1815 BL1815N BL1820 BL1820B BL1830 BL1840 BL1840B BL1850 BL1840B BL1860 BL1840B Cordless Power Tools-2 Packs : Tools & Home Improvement
JFQWLE Adapter for Makita 18V Battery to for Roybi 18V Battery, Compatible with Makita 18V BL1860B BL1850 BL1830 BL1815 LXT Battery Use for Ryobi 18 Volt One+ Lithium-Ion Cordless Tool - Yahoo
2x BL1815 18V 1.5 Ah Battery for Makita BL1815 BL1815N BL1820 - Bed Bath & Beyond - 29607906
3x BL1815 18V 1.5 Ah Battery for Makita BL1815 BL1815N BL1820 - Bed Bath & Beyond - 29607876