Bosch Rotak 37 Li Review
A battery powered lawnmower with sufficient cutting power to tackle long grass, and light enough to be stored safely at home whilst easily transportable to the allotment.
Read on for our review of the Bosch Rotak 37 Li, or see the range of Bosch Rotak mowers on Amazon UK.
You may also like to see our article on the best allotment strimmers.
Bosch Rotak 37 Li Lawnmower Review
The Bosch Rotak 37 Li is a cordless electric lawnmower. It offers the ability to cut an area of up to 300 square metres on a full battery charge – without the hassle of an electric power cord, or the mess, fuel requirement, and maintenance of a petrol powered mover.
For an allotmenter, the Bosch Rotak 37 Li looks an ideal solution for grass cutting at home and at the allotment. Being battery powered, a gardener no longer needs to worry about the distance from the nearest plug – or where to store the fuel compared to a petrol morrow. And the Bosch Rotak 37 Li is highly portable too – weighing under 14kg – meaning that it is easy to transport in the back of the car (or even a wheelbarrow).
As we needed a new lawnmower, we decided to buy one and put it to the test. We wanted to see whether it made cutting grass at home quicker and more convenient, and whether it had the cutting power to tackle long grass at the allotment.
Opening the box, the mower seemed easy to put together. It came with the handle, the battery box, the grass box, bags with screws and bolts, and the mower itself.
Starting with the battery, it is significantly larger that the batteries I have on my other power tools (a drill and grass trimmer) – about the size of my hand and weighing one and a quarter kilograms. The box says the battery will last between 150 and 300 square metres of grass cutting, depending on the length of grass. The battery is easy to fit into the charger. There is a reassuring click when it’s in the correct position.
Charging time to full is an impressive 1 hour, with an 80 percent charge after 30 minutes. When on charge, there are lights on the charger to indicate that charging is taking place, and on the battery itself.
The enclosed instruction booklet contains full details of the charging procedure, as well as guidance on assembling the mower, and safety advice.
Assembling the Bosch Rotak is straightforward. The first step is fitting the lower handles. These slide into place into special holes on the mowers body, and are held in place by screws.
Next step is adding the upper handle. These attach into grooves shaped into the lower handle, and are held in place by screws. Quick release screws are included (similar to those found on bicycle wheels). These enable the upper handle to be easily erected or folded away for easy storage.
There are also two cable tidies to keep the wire connecting the controls on the handle to the mower safely in place. Next step is fitting the grass box. There is a one time task of clicking the lid onto the base of the box. Once the box made, it is a simple task of connecting the box onto the back of the mower. Removing it is just as simple.
The last step is inserting the battery. The battery is inserted in an easy to reach casing on the front of the mower. The casing is opened by pulling on a plastic key, and then the battery is simply slotted into place. Removing the battery is just as easy.
All is now ready to cut the grass! The Bosch Rotak 37 Li has seven cutting heights. These can be selected by the orange plastic handle on the side of the mower. The process is quick to do and does not require much effort.
The Bosch Rotak cuts by rotating a single cutting blade very fast at the base of the mower. This blade can be easily spun by hand, and it is recommended to brush off grass cuttings at the end of a mow.
We tested the Bosch Rotak both at home and at the allotment. Our back garden is approximately 10 metres square. We had deliberately left the grass to grow long. The mower powered throughout the grass cutting, and cut the grass is approximately half the time of our old corded mower. This is partly due to problems with our old mower, but mainly because the Bosch Rotak is so light to move, and that there is no need to constantly worry about a power cable and ensuring it is out of the way.
The result? Our garden lawn looked exactly how we like it, after cutting it on the lowest setting.
Next step was to take the mower to the allotment. The mower was tested on long grass, about 10 inches high. The grass box was removed to make cutting faster. Again the mower powered through impressively. After a little less than 15 minutes our allotment paths and borders were back under control.
Our first impression of the Bosch Rotak 37 Li is very positive. It is a light, portable mower, that cuts well even in long grass. It makes mowing easy without the hassle of either a power cord or the fuel and maintenance of a petrol mower.
Only time will tell if the mower is durable enough to survive the demands of our garden and allotment.
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