This Makita Power Source kit will be a welcome addition to anyone with a full kit of Makita Li-Ion cordless tools who regularly finds they are short of batteries and chargers. This Power Source Set Includes 2 x 6.0ah BL1860 Lithium Ion Batteries 1 x DC18RC Fast Charger Features of the BL1860 The Makita BL1860 LXT Li-ion 6.0Ah battery pack will work with your Makita 18V machine if it has a star on the connector plate, has a yellow connector plate with a star or has a yellow connector plate only. A built in memory chip records the battery usage history. While the battery is connected it will transmit the data to the charger. The 6.0Ah battery provides increased capacity for longer runtime and maintains the same size and weight as the 5.0Ah, 4.0Ah and 3.0Ah Features and Benefits: Provides longer work time for increased performance and productivity. 55 minutes when using the Makita rapid charger with the added convenience of an LED charge level indicator. Same weight and size as the 5.0Ah, 4.0Ah and 3.0Ah batteries. STAR Protection Computer Controls Low self-discharge Energy storage capacity for long run times With overload, over discharge and overheating protection The demanding applications you take on every day are also demanding on your cordless tools and batteries. You rely on your tools, so Makita created STAR Protection Computer Controls . STAR Protection is communication technology that allows the tool and battery to monitor conditions and exchange data in real time to protect against Overloading, Over-Discharging and Over-heating. Look for Makita tools and batteries with the STAR and get these protection features. Makita Star Battery - Overload Protection High-drain applications require maximum battery power. Makita tools and batteries are engineered for industrial applications, but sustained peak demand can overload the tool. Makita s STAR Protection Computer Controls allow the battery and tool to communicate and protect your