The Bosch GBA37V30 3.7V Lithium-ion 3.0 Ah Battery delivers outstanding power and convenience for Bosch Laser Tools. The battery boasts an impressive charging speed, delivering 80% charge in 1 hour and 50 minutes using a 2-amp charger (not included). Fully charge in 3 hours and 30 minutes with the included fast USB-C cable that allows for continuous charging while in use for increased productivity and less downtime on the job. A rubber-sealed connection helps safeguard the battery on even the toughest jobsites.