Makita 18V 5.0Ah Lithium-Ion Battery BL1850B-L

• Integrated L.E.D. battery charge level indicator allows user to monitor battery charge
• Up to 33% more run time per charge compared to BL1830
• Fast 40 minute charging time
• Battery delivers consistent power and run time in extreme temperatures, even in winter (-20&degC)
• Impact-resistant outer case and shock-absorbing inner-liner are engineered to protect the battery
• Sixteen contact terminals maintain a constant connection with the tool to help prevent power loss or fluctuation, even during high-vibration applications
• Battery resists self-discharge and remains ready for use even after long periods of storage
• Sensitive electronics are protected with a thick gel coating, preventing damage against dust and moisture
• Star protection computer controls – includes overload protection, over-discharge protection and over heat protection
• The battery and tool communicate, protecting your tool and battery from overload by cutting power when put under abnormally high current draw
• If the battery reaches a certain level of heat it will cut power to the tool, protecting the tool and battery from overheating