Makita 18V Energy Kit with double charger and four 5 Ah batteries
Makita USA - Product Details -193159-1
Makita 18V LXT Lithium-Ion High Capacity Battery Pack 4.0Ah and Charger Starter Kit with bonus 18V LXT Reciprocating Saw BL1840BDC1-XRJ4 - The Home Depot
Original Makita 18V 2.6 amp-hour NiMh battery - Vlad