Makita 191E81-6 40V MAX XGT Li-Ion BL4040 (4.0 Ah) Battery

Features

100% charge in just 45 minutes! 80% charge in just 31 minutes! This battery has improved impact resistance versus the18V lithium-ion batteries due to shock absorbing internal structure. Waterproof, triple layer structure and terminal walls protect against cell failure due to water or dust. Digital communication between battery, power tool and charger. 4 LED battery charge level indicator lights displays approximate remaining battery power. 
Optimum charging system regulates thermal, voltage and current during charging cycle to ensure battery cannot be overcharged or overheated during the charging process

XGT is Makita's new 40V MAX system* with its own tools, batteries, and chargers. A combination of innovative tool design and higher output batteries provide a genuine solution ofr high demand industrial users. 

Optimum Power Supply System and Optimum Charging System
The XGT 40V MAX range of tools and batteries* come with a built-in program, providing digital communication between the battery and tool. Allowing not only for the battery to talk with the tool but also the tool to talk to the battery. Battery technology and motor engineering that work together for optimum performance. The optimum charging system is an auto maintenance system with two cooling fans for providing more optimum fast charging!

• New battery cell designed specifically for prolonged heavy duty professional applications
• Improved impact resistance versus 18V lithium-ion batteries due to shock absorbing internal structure
• Waterproof, triple layer structure and terminal walls protect against cell failure due to water or dust
• Digital communication between battery, power tool and charger
• 4 LED battery charge level indicator lights displays approximate remaining battery power
• Optimum charging system regulates thermal, voltage and current during charging cycle to ensure battery cannot be overcharged or overheated during the charging process
• Use with Makita 40V MAX XGT Li-Ion Battery Charger DC40RA (sold separately)
• 100% charge in just 45 minutes!
• 80% charge in just 31 minutes!