Bosch 4.0 Ah Battery

By Robert Robillard on Tool News

Bosch 4.0 Ah COOL PACK batteries:

Bosch recently released their new 4.0 Amp Hour batteries with COOL PACK technology and built in fuel gauges.

The “COOL PACK” can be recognized on the batteries in the form of red colored ribbing at the bottom and sides of the new battery.


COOL PACK is a heat-conductive housing built into the battery pack which pulls heat from inside the battery and allows it to dissipate on the outside.   It significantly reduces heat build up with in the battery pack and allows the battery stay cooler and last longer.  Bosch claims that the COOL PACK is responsible for 65% more run time on the battery.

Cool Batteries Lasts Longer


This is huge for Bosch.  Everyone who works with cordless tools knows that heat built up kills the battery and longevity of the tool.  Brush-less motors keep the motor cooler and now the COOL PACK keep the battery cooler.

Longer Lasting Batteries

As a contractor a 4.0 Ah battery that lasts 65% longer means more run time on my tools and less replacement costs with the tool platform.  When I consider what Bosch’s Jason Feldner says, “the 4.0 Ah battery  gives you more gas in the tank,”  and more “gas” means I can seriously consider using a cordless tool on applications where I would never have before.

For example the 4.0 Ah battery used with the Bosch RHH181 SDS Rotary Hammer will allow a user to drill 150 holes 3/4 in diameter in concrete.

BOSCH New 4.o Ah Battery Video:

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About the author

Robert Robillard

Carpenter / Remodeler / Editor

Rob Robillard is “The Concord Carpenter” Rob is a builder, general contractor, carpenter, woodworker, and editor of Concord Carpenter and ToolBoxBuzz As a General Contractor and carpenter, Rob owns and operates Concord Carpenter LLC. A full-service remodeling and construction company. Rob is a recognized leader in home building best practices and a source for how-to information for building professionals. On this website, Rob covers all aspects of home construction, building science, home improvement, woodworking, remodeling, and some of the best product and tool reviews. Rob is in charge of our Tool and Product Review series - Concord Carpenter Videos where we post all of our tool reviews and video tutorials. Rob approaches remodeling and building construction with a pragmatic and problem-solving approach. He enjoys using his knowledge and experience to help and educate building professionals as well as DIYers on best practices in the construction and remodeling industry. He's a strong advocate for "raising the bar" in the construction trades and promoting the trades to youth. #BeAMentor #Green2Great Craftsmanship, quality, and pride guide his journey on this channel The Concord Carpenter's motto: "Well done is better than well said!" : Read more about Rob

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