COBOMAT II - Hay Pellet Feeder

Unlike other systems, the Cobomat II is built for continuous use and prepares up to 12 fresh hay pellet meals every day. It delivers the right amount of hay pellets and water straight into the feed bowl. After a set soaking time, the ready-to-eat meal is released for your horse. The built-in 12V technology makes sure your stable is as safe as can be.

Cobomat II Standard version:

  • Up to 12 feedings per day
  • A specially programmed controller with a super easy-to-use menu
  • Industrial switch box
  • 92 l water tank ( New!)
  • Automatic safety flap to prevent risks for the horse. Can be locked if necessary.
  • Storage container for hay pellets for ca.. 20 kg or 34 l hay pellets
  • Automatic hay pellet feed - adjustable hay pellet quantity - the same for all meals
  • Automatic water injection - adjustable water quantity - the same for all meals
  • Soaking time adjustable - the same for all meals
  • Stainless steel feeding bowl, 14 l, 40 cm diameter
  • Illuminated button for automatic ON/OFF
  • Illuminated button for water injection ON /OFF
  • Emergency stop switch
  • Horse-safe 12V system including a battery for short power outages – it needs to be run with a 12V charger (which you'll need to provide) – and there's no connection for a solar module.
  • An easy-to-follow building plan for customers to build their own Cobomat box.
  • Installation and operating instructions for Cobomat II

Which Horses Is the Cobomat II for?

  • Horses with equine asthma (RAO/COPD) that require dust-free feed
  • Horses prone to gastric ulcers (EGUS)
  • Senior horses and horses with dental problems (EOTRH)
  • Horses that are too thin or in convalescence

Info on heating

  • The heating's energy needs can't be covered by solar power. That's why, when the heating is on, you'll need to connect a 12V charger to the battery. Also, make sure the live charger cable is safely run from the power outlet to the Cobomat box, keeping it completely horse-proof! While retrofitting is possible, it's a bit of a hassle, quite a bit of work, and can get pricey.

  • The water outlet heater and the feed bowl heater kick in once you flip the heating switch on the outside of the control box.

  • The tank heater turns on when the tank's external temperature hits 7 °C and switches off again at 18 °C (and no, that's not the water temperature).

  • When it's warm, the heater needs to be switched off.

  • The feed bowl heater warms the feed to ca. 25 °C. Without it, the mash remains just above 0 °C in frosty conditions and can even freeze during feeding breaks.
    Retrofitting is possible at a later date, but incurs an additional cost of approx. 220 €, as it is mounted on a second feed bowl. If ordered at the same time, the surcharge is only 100 €.

In practice, all the heating components we use have been super reliable for years.

The control box is only set up to connect a solar module if you order the solar kit with it. Otherwise, your Cobomat II can only be powered by a 12V charger.

The 100-watt solar module is typically mounted directly onto the Cobomat box using the fixed aluminum bracket. This setup is usually for locations that get a decent amount of light and a few hours of sun on clear days, and the module also provides extra weather protection.

For really shady spots (like the north side or inside a stable), we suggest setting it up separately facing south using the 45° solar module stand – maybe on a roof, for instance.

Box Assembly Kit (without wood)
This assembly kit comes with about 160 carefully selected and adapted parts, which makes putting everything together a lot easier, but it's not absolutely essential.

You'll find all the screws, angles, pre-drilled corner profiles, and other small bits you need included. The aluminum corner profiles set the shape for the box and make assembly a breeze.

You put it together step by step by screwing the plates, with the help of our detailed box assembly instructions. It helps if you have some basic knowledge of how to use a cordless drill.

Box Setup Kit

The plywood or wooden panels, etc., aren't included. When you place an order, we'll give you a supplier contact where you can get panels cut to the exact millimeter (they cost about 650 €).


setup and installation Detailed step-by-step instructions are included in the scope of delivery—with pictures, clear descriptions, and labeled cables. So far, all customers have been able to set up the system themselves without any problems.

It's still helpful to have some DIY skills, both for building the box and for installing the Cobomat. Unfortunately, we can't offer phone or online support.

If setting it up yourself isn't an option, you have the possibility,

  • hire a local craftsman or
  • we'll take care of building the stalls, and we can even partially pre-assemble the Cobomat for you, all for an extra charge.
In principle, it is suitable for Any TÜV and CE-certified 12V charger from 7 amps, with M6 ring terminal connection and IP protection class (e.g., IP65). We have had good experiences with the 12V chargers.
  • CTEK MXS 7.0 ( 7 amps)
  • Victron Blue Smart ( 10 amps)
Both chargers are suitable for outdoor use and have a practical connector plug. Please note: The power cable for the charger needs to be routed to the Cobomat box in a horse-safe way.

Chargers come with various settings. If these are set correctly, your AGM battery will usually charge without any problems. So, always make sure to check your charger's user manual.

Thankfully, we've never had a faulty battery in all these years. 😉

It's totally fine to have a 6 to 8-meter distance between the Cobomat II box and the solar module. The standard length is 1,5 meters.

Just so you know, the electrical resistance goes up the longer the cable is. This cuts down on the energy the solar module produces, and if your solar cables are too long, it might mean your battery won't get a full charge.

We've tested hay pellets, hay flakes, other pellet feed, muesli, and even oats. Everything gets transported into the feed bowl without any issues – and even a scoop or two of mash to get their appetite going.

Yes, the Cobomat hay pellet is also suitable for outdoor use if a weather protection plate or solar module is additionally attached to the Cobomat box.

A roof is better to prevent the food in the feeding bowl from being diluted by rain and snow.

Just so you know, we only run our Cobomats outside. We've never had any problems with them. To stop the feed from getting all wet from snow and rain, we just quickly put up a simple roof. And that's totally enough! 😉

Whether you're using hay pellets or hay flakes, both types of feed soak through really well with enough water and the right soaking time. We've tested both types, sack by sack, and honestly, we couldn't tell the difference in the finished mash.

Hay flakes soften up faster than hay pellets. This is super handy if you need to save time. If you're using a Cobomat II hay pellet feeder, you just adjust the soaking time.

Our two experiences with choke:

  • Just like many times before, the young mare in question spent the whole night in summer with the rest of the herd in a pasture with tall, overgrown grass that got wet during the night. The next morning, she had a severe choke. The vet removed whole clumps of grass. She might have eaten too greedily and not chewed thoroughly enough.

  • Our gelding was the one who got the second choke. He had only gotten hay from the hay net and then spent several hours out in the pasture. After coming back from the pasture, he started getting worse and worse, and we had to call the vet. Thankfully, it was just a mild choke. We can only guess that it was because of the really coarse, straw-like hay we had at the time. We also had colic issues with a mare from the same hay delivery.

These two cases show: Choke can even be caused by supposedly "harmless" feed.

Potential risks:

  • The most dangerous are: dry-fed beet pulp, larger amounts of dry hay pellets, or carrot and apple slices.

  • Medium risk: coarse hay, overgrown grass, straw, whole fruits (for greedy eaters).

  • Safest of all: soaked feed like hay pellet mash.

Crucial factors aren't just the feed itself, but also eating speed, dental status, portion size, and salivation.

We really recommend using only clean drinking water if you can. This helps make sure no harmful stuff from potentially contaminated well water ends up in the feed mash.

Film-faced plywood is super sturdy, waterproof, and perfect for outdoor use. It comes with weatherproof bonding and a tough coating that keeps it safe from moisture. Even so, you should seal cut edges and drill holes with varnish, as untreated wood can soak up water.

Features & Operation

Program schedule:

  1. Flap closes at the desired time
  2. Automatic transport of hay pellets
  3. Automatic water supply
  4. Soaking time
  5. The flap opens—the horse can eat.

Feed Preparation & Program Flow

Adjustable in control:

  • Up to 12 feeding times
  • Hay pellet quantity (the same for all meals)
  • Amount of water (the same for all meals)
  • Soaking time (the same for all meals)

Hay Pellet Meals in Summer...

Always fresh, around the clock!

... and in Winter.

The roof prevents rain from watering down the feed mash.

Practical And Reliable:

  • Our tried-and-tested tech makes sure your feeding system runs reliably and without any issues.
  • Our optional solar setup generates enough power outside of the freezing season, even in spots that aren't totally ideal (like under trees, for example).
  • The hay cob compartment can hold around 20 kg of hay pellets, depending on the type you use. You'll soon get the hang of how often you need to refill water and hay cobs.
  • The Cobomat is robust and weatherproof! However, a roof is still useful to protect the feed mash from rain and snow.
  • The safety feed flap prevents your horse from accidentally getting caught. If you need to, you can easily lock it with one hand, so those 'creative' horses can't open the flap by themselves.
  • In winter, the optional heater reliably protects both the water tank and the water outlet from freezing. There's also an optional feed bowl heater that reliably keeps the feed warm even in freezing temperatures. The extra power needed for heating is best supplied by a 12-V charger plugged into a 230-V socket.
  • The automatic system can be quickly and easily switched on and off using the red illuminated button – which is super handy if your horse is temporarily out of its stable or paddock and you don't want any feed prepared during that time.
  • You'll find your daily chores are minimal, while your horse gets the best possible feeding.

You Can Even Use Finer Feed!

A mix of hay pellets and some muesli or mash is appetizing for finicky horses.

Transporting the Cobomat II

The Cobomat II can be transported carefully, when necessary. However, we advise against frequent transport.

For Your Horse and Yourself

  • The Cobomat II Hay Cob Feeder reliably takes care of your horse's daily feeding. Say goodbye to long feeding breaks, fermenting or frozen feed, and just a few oversized portions. Plus, you won't have to deal with the exhausting and time-consuming task of preparing and lugging around lots of feed bowls anymore.
  • Thanks to the automatic preparation of many small hay pellet meals, the Cobomat II makes sure your horse gets a diet that's just right for their needs and easy on their stomach.
  • Many older horses and those with dental issues can finally get their fill regularly again, all thanks to the consistent and reliable Cobomat hay pellet feeder:
    • No more agonizing nights of hunger with stomach acidity,
    • No more freezing due to an empty stomach,
    • No more underweight horses because the hay cannot be chewed finely enough.
  • At the same time, the Cobomat II gives you the reassuring certainty that your horse is well cared for - even if you can't make it to the stable on time. This saves time and provides security in everyday life.

Old and weakened horses really blossom with this feeding method.

Building a Cobomat II Box

  • The box isn't included in the standard delivery.
  • Once you've officially ordered a Cobomat II, every customer gets detailed building instructions for the box and supplier details for precisely cut film-faced plywood. Material costs are around 650 € (as of July 2024).
  • Alternatively, you can also use other materials that are 18 or 19 mm thick. The important thing is that the internal dimensions, size, and position of all openings and cutouts exactly match the building instructions. That's the only way all Cobomat components will fit perfectly into the box later.
  • If you've got average DIY skills, you can usually put the box together easily with our assembly instructions.
    If you'd prefer, we can assemble the box for an extra charge and deliver your Cobomat II already partly installed!