"Features of this Makita BL1850B battery charge in 45 minutes or less charge level indicator Makstar battery - Compatible with STAR symbol and/or yellow receiver tools Durable and powerful in extreme conditions (up to -20oC) Shock resistant body What does the Makstar and LXT technologies of this Makita battery MAKSTAR, Battery charged quickly Exclusive Makita Li-ion technology, this innovation makes the torque charger and battery intelligent. A chip embedded in the battery automatically records all the data of use: frequency and intensity, number of charges and discharges, remaining capacity etc. This data is communicated to the charger in order to determine an optimal charging program that changes speed and volume of the load. Li-Ion Xtrem Technology, High Efficiency Battery Makita LXT type batteries offer high efficiency thanks to their energy efficiency and low self-discharge. These Makita batteries are characterised by their compact size and lightweight. LXT technology also allows for faster charging and longer lasting battery life. LXT batteries at a glance: Fast charging and good cooling Smart charging system extends battery life No memory effect (can be charged at any time) Lightweight and compact batteries Reinforced impact absorbing body"