Makita BL1840B 2/Pk (196406-9) 18V (4.0 Amp) Li-Ion Battery Twin Pack
by MAKITA
4.0 Ah battery offers 33-Percent increased run time versus 3.0 Ah batteries with no added weight or bulk
NEW Battery fuel gauge indicates approximate remaining battery power
NEW Battery Protection System provides Over-Discharge, Temperature and Current Protection for enhanced performance, battery cycle life and overall battery life (when used with STAR marked tool)
Optimum Charging System utilizes 3 Active Controls (Current, Voltage and Temperature) to maximize battery life
Built-In Memory Chip communicates with Charger CPU to optimize the charging process based on the unique conditions of each battery