Makita BL1815 - 18V Li-Ion 1.5Ah Battery Pack
This new 18V battery has a built-in memory chip that memorizes and communicates with the charger. The battery has no memory effect and can be charged at any time. The charger controls current, voltage and temperature to maximize the life of the battery. It weighs 40% less than the Ni-Mh or Ni-Cd batteries.
This battery is compatible with Makita BDF452HW.