The Bosch BAT620 18-Volt (4.0ah) Lithium Ion Battery features a Unique Cool Pack Design - Special heat conductive housing and ribbing pulls heat away from inside the battery, keeping the battery cooler. Up to 65-percentage More Run Time - Up to 65-percentage more run time compared to existing 3.0Ah battery using high quality Li-Ion cells. Up to 2x Battery Life - Bosch COOL Pack manages battery cells temperature reducing heat-up - main killer of every battery cell.
- Integrated fuel gauge for fast and easy charge status
- Cold weather performance: works up to -4-degree F
- Works with all bosch 18-volt lithium ion tools
- Includes: (1) BAT620 battery