Bosch FONTUS Gen II P4A 18v Cordless Low Pressure Washer 20 Bar

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.

Bosch PowerForAll

The Bosch PowerForAll Tool range is a range of tools you can buy knowing that batteries are compatible with all tools in the range providing they are of the same voltage. eg 18v fits 18v, 12v (10.8v) fits 12v (10.8v) etc. Please also note that 10.8v is compatible with 12v & vice versa as it is just a name change. Indego Lawnmowers also use the PowerForAll 18v battery but require a cover plate to be removed if changing.

PowerForAll 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 PowerForAll signifies complete battery compatibility throughout the range. There is however, one caveat to this, some of the very first older chargers will not charge the very latest batteries & a battery charger upgrade will be required if you have a first generation charger. All batteries fit all tools however.

As of 2021 Bosch has licensed PowerForAll to other manufacturers whereby batteries between these manufacturers will be interchangeable.

Important
You cannot use Bosch Pro (Blue) batteries in either 12v or 18v DIY (Green) products.

Pressure Washer Help

To help determine the type of pressure washer required it is important to consider the size of your cleaning task and level of duty, i.e. how big is the cleaning object and how often will you need to clean it? Below is an explanation of the two main types of pressure washer. Whilst bar pressure is important the overriding factor in cleaning power is the water flow rate. More water = better cleaning.

Jargon Buster:
• Bar or PSI: Bar is the most common measure of pressure. PSI = bar x 14.5.
• Bar (max): This is the pressure achieved when the machine is first turned on
• Bar (rated) pressure: This is the operating water pressure of the machine.
• Motor size (kW): Motor size indicates power providing the machine runs efficiently.
• Flow Rate (l/h): Higher flow rates enable you to clean large areas or objects faster

Did You Know:
Pressure Washers use up to 80% less water than garden hosepipes.
Pressure Washers are not subject to hosepipe bans if used for safety reasons, or if a suction hose is used to pull water from a harvested source. i.e. not the water mains. They are also not subject to a ban if used for commercial reasons, for example to maintain cleanliness, hygiene or company image.

Important things to remember when using your pressure washer:
• Always use an RCD when using electrical products in connection with water.
• Never use a non-return valve at the pressure washer connection to a hose pipe.
• Never drive over or lay items on high pressure hoses to avoid damage.
• Your water supply hose should be a min of several meters long and unwound from its reel.
• If you are using an extension lead, check that it is rated at min of 13 amps and fully unwound from its reel.