The BLACK+DECKER LCS40 40V MAX* Fast Charger is designed to charges BLACK+DECKER 36V or 40V MAX* batteries in under 2 hours. This unit charges LBX36 in 1 hour, LBXR36 in 1.5 Hours, and LBXR2036 in 2 hours. The charge indication light lets you know when your BLACK+DECKER battery is charged! This LCS40 charger fits all BLACK+DECKER 36V or 40V MAX* lithium ion tools. Maximum initial battery voltage (measured without a workload) is 40V. Nominal voltage is 36V.