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The Bosch GSB18V-535CB15 is an 18V cordless hammer drill/driver built around a brushless EC motor that delivers 535 in.-lbs. of torque and up to 28,500 BPM for masonry work. It pairs two speed ranges (0-600 RPM for high power, 0-1,900 RPM for high speed) with a 20+1 clutch, an all-metal chuck, KickBack Control and Bluetooth-ready tool tracking through the Bosch Toolbox app with an optional module. The kit ships with one CORE18V 4 Ah battery using 21700 cells, which Bosch says matches the power of its older two-layer 4 Ah pack at lower weight. It suits homeowners and trades who want a compact hammer drill that also handles concrete anchors and masonry, though it is a single-battery kit and the connectivity features need an extra module.
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Owners of Bosch's 18V brushless hammer drills generally rate the power and build highly, praising the smooth trigger and the kickback protection. Complaints tend to focus on the cost of the bare tool and batteries and on the extra module needed for the app features.
This Bosch GSB18V-535CB15 is an 18V cordless hammer drill/driver with a 1/2 in. all-metal chuck. Its EC Brushless motor delivers 535 in.-lbs. of torque and 0-28,500 BPM. It has two speed settings: high speed at 0-1,900 RPM and high power at 0-600 RPM.
The drill is Connected-Ready. Bluetooth connectivity works with an optional Connectivity Tool Module and the free Bosch Toolbox app on a connected device, for tool control and feedback. It has KickBack Control to reduce the risk from sudden rotational torque reaction, a 20+1 precision clutch and a longer belt clip.
The kit includes a CORE18V 4 Ah Advanced Power Battery with 21700 cell technology. It matches the power of the original two-layer 4 Ah battery with half the number of cells, so it is lighter. It uses the CoolPack 2.0 heat-management system and is fully compatible with Bosch 18V tools and 18V Lithium-ion battery chargers.
