Comparison Bosch Professional GAS 12 V vs Bosch Professional GAS 10.8 V-LI

Features of the cordless vacuum cleaner regarding the presence of a removable battery.

— No battery. The complete absence of batteries in the delivery set. It is associated with certain troubles, but it also provides important advantages. Firstly, the model and number of purchased batteries can be chosen at your discretion, depending on your needs and low-cost. Secondly, a suitable battery may already be “in the household”, especially when you consider that some manufacturers produce universal batteries suitable for different types of power tools of the same brand. Thanks to all this, cordless vacuum cleaners without a battery are extremely popular in the industrial (construction) type.

— 1 battery. One detachable battery included. The main advantages of this configuration are low cost and the ability to use the vacuum cleaner immediately after unpacking. At the same time, when the charge is exhausted, you will inevitably have to take breaks for charging or still buy another battery.

— 2 batteries. The presence of a spare battery in the kit allows you to extend the time of work with the device. At the same time, the spare battery can be used simultaneously with another compatible device.

The name of the battery platform supported by the device. A single battery platform is used to combine various power tools of the same brand (drill, grinder, saw, etc.) into one product line. Devices on the same platform use interchangeable batteries and chargers. Thanks to this, there is no need to select a battery for each model of a power tool because one purchased as a spare battery can be used in various power tools, depending on the situation or as needed. Batteries of the same platform differ from each other except perhaps in capacity.

The rated voltage of the battery used in the vacuum cleaner with the corresponding type of power supply (see above).

Initially, manufacturers select the characteristics of the battery (including voltage) in such a way that the vacuum cleaner can be guaranteed to deliver the power claimed in the specifications. Therefore, when choosing this indicator often does not play a decisive role. However, it can also be useful in such cases — for the most reliable comparison between models with different battery capacities in ampere-hours. See "Battery capacity" for details.

In addition, voltage data can be useful during operation — for example, to find a spare/replacement battery or a third-party charger.

— Ni-Cd (nickel-cadmium). The oldest of the options found in modern vacuum cleaners. It features high reliability, resistance to temperature extremes and good charging speed even with high capacity. The main disadvantage of this type of battery is a memory effect — a decrease in battery capacity if it is charged without being completely discharged. In addition, Ni-Cd batteries are considered environmentally unsafe. However, they are still widely used because of their low cost and decent performance.

— Ni-Mh (nickel-metal hydride). Further development and improvement of the nickel-cadmium batteries described above. While having the same basic advantages, Ni-Mh batteries are not affected by the memory effect and are safer to manufacture. Their disadvantages are the higher cost and somewhat shorter service life compared with the original Ni-Cd technology.

— Li-Ion (lithium-ion). A type of battery originally developed for use in portable devices. However, with the development of Li-Ion technology, it has been applied to other industries. The main advantage of such batteries is their high capacity with small dimensions and weight. It is also worth noting that they are not subject to the memory effect and can charge quite quickly. On the other hand, this option is not without its drawbacks — it is, first of all, sensitive to too low or elevated temperatures and a high price.

— Li-P...ol (lithium polymer). An improved version of the lithium-ion technology described above allows even more compact yet high-capacity batteries. The reverse side of these advantages is higher cost and increased sensitivity to low temperatures. However, for batteries used in vacuum cleaners, the latter is not critical.

Battery models compatible with the vacuum cleaner. This information will be useful in cases where the batteries must be purchased separately, for example, if the tool does not come with a battery in the kit, if you need to supplement the original kit, or if the existing battery has failed.

The presence of an indicator in the vacuum cleaner that displays the current battery charge level. The design and functionality of such an indicator may be different. Often the simplest LED indicators are used, allowing only an approximate estimate of the remaining energy. Also, note that the charge level indicator may not be placed on the body of the vacuum cleaner but on the battery itself. Nevertheless, this feature anyway provides additional convenience, makes it easier to monitor the state of the battery and reduces the risk of being left with a dead battery at the wrong time.