Bosch BAT621 18V Lithium-ion 5.0 Ah Battery Li-Ion Cordless
•Flexible Power System (FPS) - Works with all Bosch 18-Volt Lithium-Ion tools
•Maximum Run Time - 25% More Run Time (Compared to Bosch 4.0Ah)
•Unique Cool Pack Design - Advanced heat conductive housing keeps battery cooler, lives up to 2x Longer
•Integrated Fuel Gauge - For fast and easy charge status
•Cold Weather Operation - Battery will work down to -4 degrees Fahrenheit
The Bosch 18-Volt 5.0 Ah Battery provides your Bosch cordless tool up to 25% more runtime (compared to a Bosch 4.0Ah battery). CoolPack technology increases your battery life by 100%, pulling heat away from inside the battery and preventing damage over time. Compatible with all Bosch 18-Volt power tools, this lightweight FatPack weighs the same as Bosch's 3.0Ah and 4.0Ah batteries. Monitor charge status with the integrated fuel gauge. Single cell monitoring maximizes performance for each individual cell.