kit of two 5 0ah 40v batteries with double charger in makita xgt 191u13 9 caseThis kit is comprised of 2 compact and lightweight 40Vmax XGT batteries, similar in size to 18V LXT batteries. Digital communication between the machine and battery. The battery can communicate digitally not only with the charger, but also with the tool. Thanks to this tool battery communication, in which data is exchanged between both, such as their specifications and status. Cooling system for maximum battery life. Greater water resistance, allowing