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Comparison Deca Fast 500 vs Einhell CE-JS 18

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Deca Fast 500
Einhell CE-JS 18
Deca Fast 500Einhell CE-JS 18
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Deviceboosterbooster
Specs
Battery voltage
12 V
12 V
Starting current500 А300 А
Peak output current1000 А600 А
Built-in battery capacity30000 mAh18000 mAh
Charging gadgets (outputs)
USB A
1
5V/2А
10 W
2
5V/2A and 5V/3A
15 W
USB-A (fast charge)
1
5V/2.4А, 9V/2А, 12V/1.5А
18 W
 
 
 
DC connector for gadgets
General
Built-in flashlight
IP codeIP66
Power source12/230 V12/230 V
Size135x76x16 mm250x265x62 mm
Weight0.5 kg0.7 kg
Added to E-Catalogmarch 2023november 2019

Starting current

Rated starting current of the starter or booster (see "Type").

In this case, we mean the current that the device in the engine start mode can produce for a relatively long time (at least 30 s, or even more). This indicator must not be lower than the rated starting current consumed by the starter of the car — otherwise the device simply does not have enough power to effectively scroll the starter and start the engine. Information about the required starting current can be clarified by the documentation for the machine, or by the characteristics of the battery that is used in it as standard. For most passenger cars, this figure lies in the range from 200 to 400 A ; less powerful starting devices are intended mainly for motorcycles and other similar vehicles, and more powerful ones for buses, trucks and other heavy equipment, among such “starters” there are models for 400 – 600 A and even more.

Peak output current

Peak inrush current of the starter or booster (see "Type").

Peak current is the highest current that the device can deliver without problems for a short time (1 – 2 s). This current is noticeably higher than the nominal starting current (see above), which corresponds to the operation of a car starter: starting to spin up, the starter consumes a very high current, which, however, decreases almost immediately.

The peak inrush current of the ROM or booster must not be less than the peak inrush current of the starter. You can specify the latter according to the documentation for the car, or according to the characteristics of a regularly used car battery.

Built-in battery capacity

Capacity of the own battery provided in the design of the starter-charger.

As a rule, boosters and launchers with a power bank function are equipped with their own batteries (see “Type”). The main purpose of such a battery from the point of view of helping to “light up” is to provide the power necessary to start the engine. However, in some models the battery is responsible for other functions, such as the built-in compressor or flashlight. The larger the battery capacity, the longer the device can operate, and the more tasks it can perform on a single charge.

In starting devices with the powerbank function, this parameter is also given to estimate how much energy the battery can accumulate and then transfer to connected gadgets. It is important to consider that there is a nominal (declared) and real capacity - the latter is always less, because it takes into account the inevitable losses during energy conversion. Typically the difference is from 30 to 40%, i.e. a model with a conventional battery capacity of 10,000 mAh will not fully charge a smartphone with a 3,000 mAh battery three times, but at best will provide two power cycles, because in practice its working capacity is about 6,000 mAh. Therefore, it is not entirely correct to compare the mAh values of your gadget’s battery with the nominal capacity of the built-in battery - you should definitely take into account that the real capacity is always less than the “rated” one.

USB A

Full-size USB A connectors are popular in computer technology, they are standardly used in adapter chargers for 230 V household networks and 12 V auto sockets. In starting devices, such outputs are also widely used for charging gadgets. These ports are characterized by low power, which does not exceed 15 W (although this is quite enough to charge gadgets) and a stable current strength, which is constant throughout the charging process.

USB-A (fast charge)

Full size USB A ports with fast charging support. It allows you to charge your smartphone, tablet or other connected device much faster. The charging process takes place at increased power, and the current and voltage at each stage are regulated (for example, 5V / 3A, 9V / 2A, 12V / 1.5A) so as to remain within the optimal values.

IP code

The level of protection against dirt and moisture provided by the body of the charger. It is indicated according to the IP standard in two numbers: the first (from 1 to 6) means resistance to the penetration of foreign objects and dust, the second (from 1 to 9) - protection against moisture. A detailed explanation of these designations can be found in additional reference materials, but here we note that the larger the number, the higher the level of protection provided.