Amazon.com: SnapFresh 20V 4.0Ah Li-ion Battery Pack Cordless Tools, Long Life Battery Work with All 20V Cordless Tools Only, Lithium-Ion Battery Support Fast Charging (BBT-DC40A) : Tools & Home Improvement
DM18M Adapter converts for Dewalt 20V Lithium Battery and for Milwaukee 18V M18 Lithium Battery to for Makita 18V Lithium Battery BL1830 BL1840 BL1850 - Amazon.com