Bosch Cool-Pack 18V 4.0 Ah Lithium-Ion Battery

Bosch 18V Lithium-Ion Battery, a powerful and efficient battery that provides up to 135% more battery life than batteries without Bosch Exclusive Cool-Pack 2.0 Technology. It weighs only 1.8 lb. and delivers performance comparable to batteries that are up to 35% larger. This battery is backward and forward compatible with all Bosch 18V tools and chargers, making it a versatile addition to your power tool collection. It charges to 80% in only 41 minutes and 100% in only 55 minutes using the optional Bosch BC1880 18V Fast Charger. This battery also works in cold weather conditions down to -4 degrees, ensuring reliable performance even in harsh environments.