The BOSCH GBA12V60 12V Max Lithium-Ion 6.0Ah Battery is the most compact 6.0 Ah battery in its class, and it delivers the best runtime for the Bosch 12 V Max tool lineup. With up to 50 percent more runtime than the standard 4.0 Ah 12 V Lithium-Ion battery, this 12 Volt Max extended capacity pack is engineered for efficiency. BOSCH GBA12V60 12V Max Lithium-Ion 6.0Ah Battery is 100% compatible with all Bosch 12 V Max Lithium-Ion power tools. It provides cold weather operation down to -4° F.