The Bosch BAT420 12V MAX 4.0 Ah Lithium-Ion battery offers twice the run time of a 2.0 Ah 12V MAX battery in one compact and lightweight pack design. Now users can get even more done. Completely compatible with the entire Bosch 12V MAX line of tools, radios and more, the BAT420 is a perfect addition to you existing collection or a great opportunity to build your own combination of Bosch 12V MAX power tools. And working in cold conditions is no issue with Bosch cold-weather performance up to -4 degrees F.
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