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As many of you know I don’t really do reviews… I occasionally buy things and put my thoughts on the product in a post. Companies do contact me and ask if I’d review their ‘Do-Hicky Mark 4’ on the blog and most of the time I decline. Why? Well a lot of them stipulate that they want to see anything I write before it’s posted, we’ll sorry no. If I think it’s crap, I want to be able to say so. There are a couple of companies that I deal with that say “We are thinking of importing/manufacturing/marketing the ‘Functionvardle Mark 9’ we would like to send one for your feedback and not for reviewing on your blog.” They do get an honest feedback and I never mention the company or the product in my blog…. Even if the “Functionvardle Mark 9” makes it to market.

This was slightly different. The PR department simply said “We’d like to send you a Bosch Fontus for review” No requests for editorial control, previews before publishing, promises of ‘it’s yours to keep’ if we like the review. What made me say “Yes” to this particular  request?

Well, for a while I’d been procrastinating on coming up with a contrivance of my own that did a similar job. I’d bought one of those bright yellow overgrown pump up spray things when they were on offer for rinsing down the caravan after cleaning… we have no water or electricity at the storage site we use. I’d already got three of those 25 litre water containers that I’d throw in the trailer along with the buckets, brushes, ladders… everything for a cleaning mission down at the caravan storage yard… and I thought it wasn’t beyond the realms of reality (and my awesomeness) to throw a 12 volt pump…. some hose…. a couple of hose connectors….  length of cable…. fuse & fuse holder……  suction pipe… board or box to hold it all…      you see where this is going? By the time I’d assembled all the bits found I’d got half of them wrong and moved the goal posts half a dozen times.  Apathy set in and I resigned myself to keep pumping the big yellow spray thing. The nice Lady from Bosch PR hit me in a weak moment and I thought “Hmmmmm.”


OK why “Fontus” and not “Rechargeable Battery Powered Portable Water Reservoir and Spray“? Fontus, I had to Google it – In ancient Roman religion, Fontus or Fons (plural Fontes, “Font” or “Source”) was a god of wells and springs. So that answers that question. Now you know why I don’t work in product marketing! The box arrived and I was surprised at the heft of the box. The actual unit itself weighs in at just under 10 Kgs…. and has a water reservoir capacity of 15 litres.

So what is it… well basically it’s a Rechargeable Battery Powered Portable Water Reservoir and Spray Unit. You fill it up with water, insert the rechargeable battery, connect the included hose and spray head, push the ON button and squeeze the trigger. Is it a jet wash? No, it runs at a max of around 1.5 MPa that’s 15 Bar or 217 PSI to you or me or if you are really old 14.8 Atmospheres. So it’s not a jet washer.

Now here is the thing that has me fascinated. On the top there is a three position power switch. While testing (read playing around) I could tell it changed the power… but also it seemed to change the amount of water without affecting the spray pattern or distance it should spray the jet of water I could do the same width ‘fan’ of water on each of the three power settings but with three volumes of water. (OK I know the physics behind it… no need to comment.)

When washing the car when it comes to rinsing off I normally have my hosepipe rose set on ‘rain’ so its a constant rain shower and proceed to go round the whole vehicle rinsing off the shampoo (yes I shampoo my vehicles… get over it) Now with the Fontus I used the horizontal fan setting not he trigger and could literal have a line of water that I just moved down the body panel pushing the shampoo suds down as it went. I was amazed I could do the whole of the VW Amarok.. Which isn’t small… on less than 15 litres on the lowest power setting. That is some serious water saving there.

The battery duration is unknown at the moment. It comes complete with a 18 volt 2.5 Ah battery and charger, that are as far as I know the same Bosch fitting as used on many of their power tools. SO if you already have Bosch power tools it’s Billy Bonus time… another charger and battery for your tools and spare batteries for your Fontus. (Curse my early lifestyle choices for going with Makita and DeWalt.) I believe there are also 4.0Ah and 6.0Ah batteries available in the range.

Toy or Tool?

After first thinking what a great idea…. I had a look at the price… an eye watering mahhosive amount… list price. However as everyone knows “Google is you friend” a quick Google later and John Lewis & Partners have it down to £209* (*at the time of writing) Now that is not a small amount so the question is… expensive toy or tool? Well, After my initial “testing [read playing about again] I’d been jet washing in the front garden over Easter… around five hours worth of jet washing in fact and the front door and windows were to say the least showing the dried on signs of mud splattering. Now Sue is understanding, but waiting for the window cleaner to deal with it was not an excuse I was going to get away with! Not wanting to drag the hosepipe round to the front of the house again, I had a “Ha.. I have just the tool for that” moment and having already recharged the battery and topped off the water tank I wheeled the Bosch Fontus out of the garage and round to the front of the house. A quick light spray to wet each window and door, wipe down with a soapy sponge and rinse off with the Fontus. Done in ten minutes. It’s also completed several other little tasks around the home now too.

Would I take it with me on a caravan trip?…. If we were taking the bikes, yes. I have used a dog wash station in the past (I know I wasn’t supposed to) and as long as I don’t use a chemical on the bikes, just rely on pure water and the included brush I should be OK washing the bikes on the grass. I wouldn’t use the brush on a vehicle’s bodywork (but I’m a bit OCD about things like that) nor would I wash the vehicle or caravan for that matter, on a pitch.

 A few Q and A’s…

  • Can it be carried full of water? – Yep, I also tried it on its back, the filler cap seems to have an air admittance valve that stops water from leaking out. I wouldn’t do it for long periods though on it’s back… just the ten minute trip to the caravan storage yard. Upright shouldn’t be a problem I would have thought.
  • Can you spray anything else? – Nope… fresh water only.
  • Can you see how much water is in the tank? – Yes the tank has a site gauge in each side.
  • Can you store it full of water? – I did for  few days, however it cautions you not to do so in the instructions.
  • How big is the filler cap?–  It’s about the same size as an Aquarol filler cap and has a removable mesh filter trap… I could get a Hoselock fitting on the end of my hosepipe to fit through the opening and wedge in the filter when filling it. It’s also easy to poor water in from a container.
  • How heavy is it full? – 9.8 Kgs empty and 24.8 Kg’s full… so about two bags of sugar heavier than your airline baggage allowance.
  • How long does the battery last? – well I certainly got through 30 litres of water (2 tanks) on the low power setting (which was all I needed for rinsing off) and looking at the battery indicator maybe I could have made inroads to a third tank. I don’t know if the battery indicator is liner or not.
  • How long does it take the battery to recharge? – From battery empty indicator to full with the supplied AL1830 CV charger 60 minutes… or about 1 cup of tea, two digestives and a quick catchup with your neighbour.
  • Is it easy to move? – When full it trundles around just like one of the wheeled over head locker type pieces of luggage. If you can drive one of those… you can handle this.
  • Will 15 litres be enough to rinse a caravan? – Yes I could do it with 15 litres. But it’s easy just to have a container with a bit more water.
  • What fittings connect the hose, can I use a garden hose? – The fittings are a twist lock type.. not seen them before but I did like the fit and function of them. They seem quite suitable for the task. Why would you want to use a garden hose… just wheel it to where you need it.
  • What else can it be used for? – Washing off salt water from wet suits, boat trailer, outboard engines, muddy dogs, muddy bikes, wellies, washing windows, washing the beach off anything….  making sure your BBQ is properly extinguished (as I write this I keep getting the smell of burning moorland wafting in through the open windows into the office).

Anything Else?

Only two things… do they make a 12 volt ‘in car’ charger for that battery? That would be really cool and…. nope I got nothing else. That will be one thing then.

Final thoughts…

If I already had a couple of Bosh power tools that used the same battery pattern and was thinking about an additional battery and charger… then the price makes it a good deal. An extra tool that gives you an extra battery and charger into your Bosch ensemble of kit.

The hose is not as pliable as I’d have personally liked, but then again looking at it it’s not going to get damaged easily.

It is a bit of a ‘luxury’ bit of kit… but then again once you start using it… I’ll stop there, Sue might be reading this.

Do I want one? Well  I don’t really want to give this one back.