Battery pack BA 3.7V 1.0Ah A. The Li-Ion battery BA 3.7V 1.0Ah A Professional ensures a reliable power supply, making it ideal for extended tasks. When used with Bosch laser distance meters, the BA 3.7V 1.0Ah A Professional can be recharged during tool operation. This eliminates the need for replacement batteries and reduces waste from used batteries, contributing to ecological sustainability. The lithium-ion technology allows for a long battery life and provides consistent performance even at low temperatures. The battery can be conveniently recharged via its USB-C port using various 5-volt power sources such as PCs, power banks, and conventional outlets. The battery is compatible with Bosch laser distance meters GLM 50-27 C and CG Professional.