Comparison Ninebot One S2 vs KingSong KS14D 340Wh

The maximum rider weight that the device can support (including the weight of a backpack, bag and other things carried on oneself; this is especially important to remember if the weight of the person himself is close to the maximum allowable). If the permissible load is exceeded, the transport not only loses efficiency but can also break down at any time. Therefore, it is impossible to ignore the prescriptions for weight anyway.

The maximum speed that the hoverboard is capable of reaching: on a flat surface, with a full battery charge and an average rider weight. The same parameter is also the maximum safe speed allowed when using this model; in theory, it is possible to accelerate even faster (for example, from a mountain), but this is fraught with breakdown, accident and injury, and therefore is not recommended at all.

Most modern models have a maximum speed of up to 20 km/h, and in “high-speed” vehicles this figure can exceed 30 km/h. Note that a fall from a hoverboard, even at a speed of 10 – 15 km/h, is fraught with serious injuries. Therefore, protective gear is highly recommended.

Clearance is the distance from the lowest point of the hull to the ground; in other words, this is the largest size of an obstacle on the road (in height), that the device can pass under itself. High clearance contributes to cross-country ability. However, it requires large-diameter wheels and, accordingly, an increase in motor power, which in turn affects the weight and price of the device. In addition, self-stabilizing transport is designed primarily for urban use, with driving on a flat surface. Therefore, even in most models, the clearance does not exceed 150 mm, and in some devices, it is only 30 mm.

— Position lights. The dimensions of the self-stabilizing transport are small, so such lights not only highlight the dimensions of the vehicle, but increase its visibility. This function is especially important at night — for safety, both for the rider and those around him. And in some countries, operation without position lights is prohibited by law.

In models that do not have front and rear sides as such and can drive equally efficiently in either direction, position lights are often made in the form of switchable two-colour lights: for example, the device turns on white light from the side it is currently traveling to, and red on the opposite side of the case.

— Bluetooth. This feature turns the vehicle into a mobile speaker system: you can connect an external Bluetooth device (for example, a smartphone) to it and listen to music through the built-in speakers during the ride.

— USB port. Usually, this port is intended for charging smartphones or other gadgets from the built-in battery — thus, the vehicle turns into an external battery (power bank). At the same time, given the impressive battery capacity in a self-stabilizing vehicle, charging an external gadget has practically no effect on the power reserve — especially since we are most often talking about a minimum charge replenishment, and not about charging up to 100%.

...— Remote control. Such control can be carried out both from a separate remote control supplied in the kit, and via a smartphone (usually via Bluetooth) using a proprietary application. Specific control options can be different — up to the tracking mode, when the device itself follows the owner at a certain distance. However, anyway, this function significantly expands the possibilities of transport.

Battery capacity of the device in milliamp-hours (mAh)

This parameter characterizes the amount of energy that the battery can store. The higher the number the more energy the battery stores, respectively, the greater the range (see above) and the more time it will take to charge. However, mAh is a popular, but not very reliable unit of power measurement: the actual amount of stored energy depends not only on the “milliamp hours”, but also on the battery voltage (and it can vary greatly in different models). The actual battery life strongly depends on the power consumption of the unit (determined primarily by engine power). This means that only models with similar performance characteristics and the same battery voltage can be compared with each other in this indicator. And when choosing, it’s easier to focus on more practical indicators — first of all, the range.

The battery capacity of the device in watt-hours (Wh).

In general, capacity shows the amount of energy that a battery can store. The higher the number, the more energy the battery stores, respectively, the greater the range (see above) and the more time it will take to charge. Note that although watt-hours are used to designate power much less frequently than milliamp-hours (see above), this designation is more reliable, because when evaluating capacity, in this case, the battery voltage is also taken into account (as opposed to counting in mAh). This makes it easy to compare batteries of different voltages. At the same time, do not forget that the energy consumption of different models can also be different, and battery life is easier to evaluate by the directly claimed range.

Rated voltage of the battery used to power the machine.

Usually, the more powerful the motors used, the higher the voltage: due to this, it is easier to provide the required battery power (see below). At the same time, this power depends not only on voltage. In addition, manufacturers choose batteries for the specific motor model used to provide the desired performance. Given all this, we can say that this parameter does not matter when choosing a transport. Voltage data may be useful only for battery repair/replacement, finding a charger and other similar tasks.

The power of the motor installed in the device. For models with two electric motors, this paragraph usually indicates their total power.

This parameter is one of the most critical for self-balancing transport. On the one hand, powerful motors improve the efficiency of balancing (especially with the large weight of the rider), allow you to reach high speed, effectively overcome bumps in the road and climb hills. On the other hand, they weigh a lot, are expensive and require capacious batteries to ensure a decent range (which further affects the weight and price of the entire unit). Therefore, motor power, usually, directly depends on the price category of a particular model.

In fact, the more powerful the motors, the better, and the question of choice for this parameter depends primarily on the price.

The number of motors installed in the vehicle.

This parameter is related exclusively to the type of transport (see above): hoverboards require two motors (one per wheel), otherwise, it would be extremely difficult to ensure normal handling, but in e-unicycles, on the contrary, it makes no sense to install more than one motor.