5 x Makita BL1830B 18v LXT 3.0Ah Li-Ion Battery. The Makita 18v 3.0Ah Lithium-Ion battery contains high energy density technology. Fits all Makita 18v LXT Li-Ion tools with Makita 'Star' technology so if your tool also has a 'Star' you can be assured of battery protection.
eBay