How to choose a cordless rotary hammer suitable for concrete drilling?

1. Impact energy and drilling diameter
The impact energy (in joules/J) determines the penetration force.
The upper limit of drilling diameter needs to match the actual requirements.

2. Motor and battery performance
Brushless motors have higher efficiency and longer lifespan.
The battery voltage and capacity affect the battery life. 18V batteries are suitable for medium intensity work; 36V system fast charging technology can reduce downtime

3. Weight and ergonomic design
Lightweight is crucial for high-altitude operations.
Seismic technology reduces fatigue

4. Safety and Additional Features
Safety clutch prevents the risk of stuck drill
Dustproof design: optional dustproof nozzle
LED lighting and battery display enhance operational convenience

5. Compatibility of accessories
Drill bit adaptability
Battery platform compatibility