Steinel MH 3 18v CAS Cordless Professional Hot Air Heat Gun

Battery AH Explained

The best way to describe battery amp hour is that this is effectively the size of your fuel tank, the more amp hours your battery has then the longer the battery will last between charges. More amp hours does not increase the power of a given tool.

Battery Voltage Explained

A tool with a higher voltage than another is a bit like choosing an engine in a car, the higher voltage will generally mean higher power & performance. As with cars though a bigger engine does not always translate to better performance so it is important to compare the specifications of tools at different voltages between different manufacturers.

Cordless Alliance System (CAS)

The Cordless Alliance System (CAS) is a range of tools from various manufacturers you can buy knowing that the batteries are compatible with all tools from all manufacturers providing they are of the same voltage.

CAS has many advantages not least the fact that once you have a tool with a few batteries then there is no need to buy the more expensive versions with battery & charger, you can just go ahead & buy the much cheaper no battery versions!

So remember CAS signifies complete battery compatibility throughout the range of all manufacturers who sell CAS Battery Tools.

In the UK current CAS compatible brands are Metabo, Steinel Professional, Rothenberger, Fischer, Gesipa, Scangrip, Rubi. More are being added all the time.