Comparison Karcher KHB 5 Battery vs JIMMY JW31

The maximum outlet water pressure provided by the miniwash; for models in which the pressure is not regulated, this paragraph indicates the standard operating value.

The higher the water pressure at the outlet, the more efficiently the unit handles with chronic and stubborn contaminants. On the other hand, strong pressure requires high engine power, which affects the dimensions, weight and price of the device — despite the fact that not every dirt requires such pressure, and excessively intensive washing can damage the surface to be treated. Thus, the pressure is chosen by manufacturers in accordance with the general class of the miniwash. Thus, values up to 100 bar are found in the most compact and low-power domestic models (see "Type"). A pressure of 100 – 125 bar is considered relatively low for household sinks, and most of these models are in the range of 125 – 150 bar — this is most often quite enough, taking into account the characteristics of the application. For professional units, the average is considered to be 150 – 175 barhowever, there are many models that give out more than 175 bar.

Water consumption characterizes productivity, that is, the amount of water that the unit can supply to the nozzle per hour. In most models, performance can be adjusted; for such cases, the characteristics indicate the flow rate at maximum power.

Higher performance allows you to better handle large volumes of work and stubborn dirt, but requires adequate power — and this, in turn, affects the size, price and electricity / fuel consumption. So it is worth choosing according to this parameter, taking into account the features of the planned application. If we talk about specific numbers, then low-capacity washes include models with a rate of up to 350 L / h, which are designed for simple tasks like cleaning windows in a private house, a small car or smaller equipment like bicycles. The unit with a flow rate of 350 – 500 L / h is perfect for washing cars and other similar tasks; if you have to deal with a large car like an SUV, you should pay attention to more performant options — up to 600 L / h. A capacity of 600 L/h or more makes it possible to classify the sink as a professional level, and values of 1000 L/h or more are typical for the most powerful and advanced models that can handle almost any task.

The length of the high pressure hose that connects the gun to the washer body.

The larger this length, the more freedom of movement the user has. On the other hand, a hose that is too long can be inconvenient when working at short distances. Therefore, when choosing, you should not chase the maximum length of the hose, but take into account the real conditions in which you plan to work. The best method for choosing a hose length is to estimate the maximum distance to be removed from the sink body, and add a margin of at least 2 to 3 metres to it in case of unforeseen circumstances (for example, obstacles that prevent the hose from being pulled directly).

The shortest HP hoses in modern mini-sinks are up to 4 m long, in the longest this figure can exceed 10 m. However, the most popular are the average values — 4 – 6 m and 6 – 10 m.

— Universal 3 in 1. Multifunctional nozzle capable of operating in 3 modes and having the ability to quickly switch between them; in some models, this can be done right in the process, although this possibility should be clarified in advance. The specific functionality of such a device also needs to be clarified separately: it can be different for different manufacturers (and even in different models of the same manufacturer). However, as a rule, the universal nozzle covers the most basic washing functions, such as spot jet, mud blaster (see below) and gentle mist spray mode.

- Fan. In accordance with the name, this type of nozzle produces a "fan" during operation - a flat jet expanding from the nozzle. This jet is well suited for treating large areas. In addition, by changing the distance from the nozzle to the surface to be treated, it is possible to regulate the intensity of exposure and the width of coverage within certain limits. So, bringing the nozzle almost close, you can get a very powerful effect on a small area; when removed, the coverage will expand, and the intensity will decrease.

- Dot. Nozzle that forms a thin and narrow jet. It is intended mainly for processing hard-to-reach places and small surfaces, as well as "precise work" - for example, if you need to carefully walk along a certain area, avoiding water getting beyond its ed...ges as much as possible. Also note that the spot nozzle provides a fairly intense impact, so it can to some extent replace the mud blaster (see below) - for example, on delicate surfaces, where the jet from the burr can damage the coating.

- Mud. A specialized nozzle designed to remove dirt, including hard and old. It is also known as a “mud cutter”, which quite accurately describes the features of its work: the design has a special rotary nozzle, thanks to which the water jet rotates and effectively “cuts off” even fairly dense deposits. At the same time, it should be borne in mind that such an impact is quite intense, it can also harm the treated surface itself - in particular, there are known cases of damage to the paint on the car body due to too long and intensive use of the mud cutter. So you need to work with such a nozzle carefully and "without fanaticism."

- Corner. Bent-shaped nozzle: the flow of water leaving the nozzle is directed at an angle (usually straight or almost straight) relative to the hose. And in some models, the nozzle is mounted on a hinge and the angle of its location can be changed within certain limits. Whatever the case, the angled design makes it easy to reach a variety of hard-to-reach places that are hard to reach with traditional straight nozzles. The specific shape of the jet can theoretically be different, but in practice it is most often a "point" or "fan" (see above).

- Foam gun. Nozzle designed for washing with foam. Foam increases the efficiency of removing dirt, this method is popular, in particular, when washing cars and motorcycles. The nozzle itself has its own container, into which the detergent is poured, and a special nozzle shape that promotes foaming. An alternative to the foam gun can be your own foam container provided in the sink; see below about it, here we note that a specialized nozzle is rather bulky, however, it provides high quality foam, which cannot always be achieved when using a built-in tank, and can be used regardless of whether the sink has its own foam tank.

- Washing brush. A nozzle with a working part in the form of a brush, designed in such a way that during the operation of the unit, water enters the bristles of such a brush. Such nozzles are very convenient for contact washing: they eliminate the need for separate brushes, and are much more efficient and convenient.

- Rotating brush. A variation of the brush described above, supplemented by a special drive, due to which the working part with bristles rotates during use. Such a drive usually works due to the water pressure supplied to the nozzle. Such devices are more effective than classic brushes, they are more convenient and easier to use, but they are much more expensive.

- Patio nozzle. A special type of nozzles for washing large flat surfaces - mostly outdoor (garden paths, sidewalks, floors on the porch or terrace, etc.; often also walls). Such a nozzle has a characteristic round shape, and functionally it combines the capabilities of a high-pressure jet and a brush. The brush is located around the circumference of the product, and inside this ring is a design like a garden sprinkler, equipped with several nozzles. During operation, these nozzles move in a circle, intensively processing the surface under them; and the brush not only promotes effective cleaning, but also prevents splashing. Most Patio nozzles are as effective as more traditional fan models, providing not only minimal spray, but also more coverage.

— Number of replaceable nozzles. The total number of replacement nozzles (nozzles) supplied with the sink. Recall that the strength, thickness and shape of the jet issued by the unit depends on the configuration of the nozzle. However, it should be borne in mind that this parameter may correlate differently with the total number of washing functions. For example, in one car wash, three complete nozzles can each be responsible for their function (option: fan, spot nozzle, mud nozzle), in another model it can be three versions of the same function (say, fan spray at 3 different angles), and in the third device, on the contrary, one of the nozzles can be universal (see above), and the total number of functions will be more than 3. Such details should be clarified according to the manufacturer's documentation. However, in general, a larger number of complete nozzles, as a rule, means a more extensive set of operating modes.

— Hose for pipe cleaning. This accessory is intended for cleaning sewer and drainpipes from plaque, small debris, grease and other deposits. As a rule, such hoses are flexible and have a small outer size that allows them to overcome pipe bends; they are also often reinforced with steel cord. Under water pressure, the nozzle with the hose is sucked into the pipe and cleans it well. The nozzle jet configuration is typically cone shaped with flows in different directions.

Features of the battery supplied with the sink.

For more information about battery power, see "Power supply", and modern sinks with this feature can be supplied with one removable battery, with a built-in battery, or without a battery at all

— 1 PC. In this case, we are talking about a removable battery (models with built-in batteries are placed in a separate category — see below). This is the most popular option nowadays, due to a number of advantages. So, such equipment allows you to use the sink right out of the box, without wasting time and money looking for a compatible battery; and the removable design of the battery itself provides a number of additional features. For example, it allows you to buy additional batteries and significantly increase battery life: when the charge is exhausted, you can simply change a dead battery for a fresh one. If it is possible to charge batteries that are not in use, right during operation, then charging interruptions can be minimized, if not completely eliminated. And when the "native" battery fails, it is enough to replace it, there is no need to repair or change the entire unit.

— Is absent. The complete absence of a battery in the package causes certain inconveniences — you need to look for a power source separately. At the same time, this option also has some important advantages. Here, f...irst of all, it is worth noting that units with this feature are usually not designed for their unique batteries, but for certain standard batteries of the same manufacturer, also designed for various power tools. At the same time, the list of compatible batteries (see below) can be quite extensive, and some washes are initially made for a specific battery standard (see "Battery platform"). In fact, this means two main points. Firstly, you can easily find a power source at your discretion, according to the specifics of specific tasks and low-cost. Secondly, a compatible battery may well be found in a cordless power tool that you already have on the farm — this will allow you to completely do without additional purchases.

— Built-in. A battery that is built into the chassis and is not designed to be removed and replaced by the user. Such a design somewhat reduces the overall dimensions of the units, however, the advantages of removable batteries described above are not available for it. So, a dead battery of this type cannot be quickly replaced with a fresh one, the only option is charging — and it requires a source of energy and takes a lot of time. If the characteristics of the battery do not suit you or it is out of order — again, you can’t just buy and install another power source: at best, you will have to contact a service centre for repair, and at worst, you will need a complete replacement of the unit. As a result, built-in batteries are extremely rare nowadays — in separate low-power units designed for occasional use for simple tasks.

The name of the battery platform supported by the implement.

A battery platform is a battery standard used to ensure that different appliances of the same brand (power tools, pressure washers, flashlights ...) can use the same power sources and chargers for them. This eliminates the need to use a different battery and “charger” for each individual device, and also makes it easier to find compatible power sources: instead of checking a list of compatible batteries, you just need to make sure that the battery you select is from a supported platform. (However, models of compatible batteries can also be specified in the specifications — see below for more details).

Batteries of the same platform mainly differ from each other in terms of capacity — and, accordingly, cost.

Nominal voltage of the battery used in the washer with the corresponding type of power supply (see "Power supply"). For models not originally equipped with batteries (see "Complete battery"), this paragraph indicates the voltage for which the device is designed.

Theoretically, a higher voltage allows you to achieve more power, but there is no strict dependence here, and models of similar power can differ markedly in this parameter. And when looking for a spare or replacement battery for a unit with a removable battery, you should focus not on voltage, but first of all on compatible batteries directly stated in the specifications (see below) or a battery platform (see above). So, in general, this characteristic is more of a reference than practically significant, and when choosing it, you can not pay much attention to it.

The technology by which the complete battery is made in the sink with the appropriate type of power supply (see "Power source").

Note that most battery packs use interchangeable power supplies and can be compatible with different types of batteries; however, in this case we are talking about the complete battery. The options here might be:

— Ni-Cd. One of the oldest battery manufacturing technologies. Nickel-cadmium batteries are quite reliable, have a wide temperature range and are insensitive to temperature changes. In addition, such batteries tolerate high charge and discharge currents well, so they charge quickly and are well suited for powering powerful equipment with high consumption currents (like electric motors). At the same time, such elements have serious drawbacks. The first is the so-called. "memory effect", a decrease in battery capacity if it was put on charge before it was completely discharged. However, it is believed that it can be compensated by high-quality charge-discharge controllers. The second point is environmental insecurity during production and disposal.

— Ni-Mh. An improved version of Ni-Cd cells, more environmentally friendly and with improved performance. In particular, while retaining most of the advantages of the original technology in such batteries, it was possible to achieve almost complete elimination of the "memory effect". However such batteries are somewhat more expensive.

— Li-Ion. A tech...nology that was originally used in portable gadgets like smartphones and tablets, but has recently spread to other types of technology. One of the key advantages of lithium-ion batteries is their high capacity with relatively small size and weight. At the same time, lithium-ion power supplies work worse at high currents, they are sensitive to low and high temperatures (as well as temperature extremes), and they are quite expensive.

— VRLA. Lead-acid batteries, like those used in cars to power starters. More precisely, the abbreviation VRLA denotes the so-called. maintenance-free batteries — batteries that have a hermetically sealed case and do not require checking the density of the electrolyte, topping it up, etc. Such power sources are quite powerful and reliable, they work well even at high discharge currents. On the other hand, VRLA batteries are heavy and have specific storage rules — they can only be stored charged; if they are in a discharged state for a long time, sulfation of the plates begins, which worsens the properties of the battery. The situation can be corrected by charging according to a special procedure, but it is still better not to bring the battery to such a state.

The capacity of the battery installed in the mini-sink of the corresponding design.

The battery capacity affects the operating time. At the same time, in fact, it hardly makes sense to evaluate the battery life of the unit according to this parameter. The fact is that it depends not only on the characteristics of the battery, but also on the energy consumption of the mini-wash itself — and it is directly determined by the performance. So this parameter is rather general informative than really significant, and when choosing, you should pay attention not to it, but to the operating time claimed in the characteristics (see below).