Battery voltage
The nominal voltage of the batteries that the device can work with. For boosters (see "Type"), in this case, the voltage that the "starter" can output at the output in the engine start mode is indicated.
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6 V. Voltage found in some motorcycles, scooters, ATVs and similar vehicles.
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12 V. Standard voltage of batteries (and on-board networks) for passenger cars, as well as light trucks and minibuses.
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24 V. Voltage used mainly in trucks, buses and other heavy equipment. Also found in some heavy SUVs.
Max. charging current
The highest current that the charger can provide in charging mode. For models with one current adjustment (see below), its value is also indicated in this paragraph.
Different battery models may differ in charging parameters, including over the optimum current range. Accordingly, it is worth choosing a charger in such a way that it matches this range. Detailed selection recommendations can be found in special sources — in particular, documentation for batteries.
Battery capacity 12V
The capacity of batteries with an operating voltage of 12 V, for which a starter charger can be used. As a rule, modern units are not designed for one specific value, but for a range of capacities, which greatly facilitates the search filter according to the required parameters.
Note that although the discrepancy between the rechargeable battery in terms of capacity is not as critical as in terms of current or voltage, this does not mean that this parameter should not be paid attention to. Both too capacious and too “small” a battery will cause the charger to work in an off-design mode, which is harmful to both the “charger” and the battery, and can even lead to accidents.
Battery capacity 6V
The capacity of batteries with an operating voltage of 6 V, for which a starter charger can be used. As a rule, such batteries are used on board motor vehicles (motorcycles, scooters and mopeds). Note that modern units are not designed for one specific value, but for a range of capacities - this greatly simplifies the selection according to the necessary parameters.
24V battery capacity
Batteries with a supply voltage of 24 V are used in commercial vehicles. Starting and charging devices for them are produced for a certain range of battery capacities, which must be observed. The discrepancy between the capacity of the rechargeable battery leads to the operation of the starter-charger in off-design mode.
