Self-powered vehicle battery jump starter is compact, large capacity and very high power. All these significant advantages make a portable battery indispensable not only in winter, when the capacity of a car battery drops significantly in sub-zero temperatures, but also when traveling outdoors and on long hikes. Before we present our 2020 rating, it is worth briefly describing what such devices are, namely, a portable starting device for a car, their varieties and what capabilities they have.
How does an autonomous starting device for a car work?
How to choose a portable jump starter for your car? Starting devices differ in types and, accordingly, their capabilities depend on this. In our case, we exclude impulse and transformer starting-charging devices operating from a 220V network, because. they are focused on “home” or “garage” use, and also involve disconnecting the battery from the car’s on-board network.
Also, our selection did not include capacitor starting devices. These are autonomous units that can be brought to the car in the parking lot and quickly recharge a dead battery. Starting the engine and charging the battery is carried out according to a rather complex scheme, the main part of which is powerful capacitors. They are charged at home from a 220V network, and then give their charge to start the engine. Such devices are not very popular with motorists due to their high cost and their negative impact on the car battery.
The best option, including as a powerful autonomous 12V power source, are the so-called. boosters are battery-type starting devices. They work on the principle of a power bank already familiar to everyone for smartphones, tablets and even laptops. Here everything works according to the same principle: first, the battery is charged, and already the car starts from the battery, in which its own battery is discharged.
There are two types of boosters – household and professional. The latter have a large battery capacity, its size and weight. Household starting devices have exactly the capacity that is enough to reliably start one car.
Due to the extremely high capacity (and power) of such portable batteries, they can be used not only for car battery resuscitation, but also for long-term power supply of various 12V devices. These can be various fans, air pumps, for example, for PVC boats, portable refrigerators, radio stations, etc.
How to choose the right booster for your car
The selection of a portable starting device can be accelerated simply by focusing on the type and size of the engine in your car. Most chargers are designed for 12V car batteries. Most of the devices on the market have terminals with protection against overheating, reverse polarity and reverse inrush currents. It is also important that the case of such portable batteries has 5V USB outputs for charging phones and tablets.
Nuances when recalculating power and capacity
When choosing a portable starting device, many buyers are guided by the energy characteristics indicated by the manufacturer. As a rule, they are given in ampere-hours or watt-hours. To convert one to the other, you need to multiply the ampere-hours by 3.7V. The result is watt-hours. And the value of 3.7V is the voltage of a single lithium battery used in such products. In real samples, several batteries are installed in series.
The parameter measured in amp-hours for Li-Ion, Li-Pol and even Li-Fe (a special type of battery for long-term loads) batteries is usually called capacity. But in fact, the product of current by time does not give capacity at all, but charge. This also applies to another parameter declared by manufacturers – power, which is measured in watts. After all, capacitance is not an absolute measurable value of stored energy for a chemical current source. These indicators depend on the magnitude of the discharge current at which measurements were taken.
For example, if the manufacturer measured readings at a low discharge current, then it is almost impossible to recalculate the power or capacity in relation to heavy starter currents during the start of an automobile engine, because. the dependence is non-linear. So, often the energy capacity from 14 to 18A h indicated in the descriptions of portable batteries is obtained in the discharge mode via a low-current output, for example, at a load current of 1A via a USB output, the voltage at which is 5V. In terms of starter currents, ampere-hours and watt-hours will become much less. At the same time, low winter air temperatures should also be taken into account. Below we have prepared a rating in the portable charger category for a car.
Rating: 6 best models of portable launchers
The most common engine among motor vehicles of the domestic market is gasoline with a cylinder capacity of up to 2 liters and diesel up to 6 liters. We have selected starting portable batteries with a good margin, and besides, they have additional functions for powering various devices.
This power bank has a nice glossy body that many users compare to flagship smartphones. Although the device is designed for a starting current of 600A, it requires careful actions during engine plant operations, in particular, not to allow starting at a charge level of less than 60%. The device is equipped with a folding handle for hanging it on the hood, as well as a built-in flashlight. In addition to USB ports, there are two outputs – 12V (10A) and 19V (3.5A).
Berkut Specialist JSL-20000
This portable car charger is equipped with a 20,000 mAh (66.6 Wh) li-polymer battery with four cells. According to the manufacturer, it is capable of starting gasoline engines up to 7 liters and diesel engines up to 4.5 liters. Working temperature -30℃ to 60℃. In addition to the standard 12V output, there is also a 19V connector for charging a laptop. Another nice bonus is the presence of a USB Type-C port, which allows you to charge mobile gadgets in an accelerated mode. The device has a compact size and light weight of 610 g. The package comes with a convenient case for storing and carrying the device. This model can be safely called the best starting device for a portable car in our rating.
Smartphones and tablets
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Aurora Atom 28
ATOM 28 is designed to start engines of motorcycles, passenger cars, generators and other devices powered by 12V batteries. The power of the device is enough to start almost any gasoline engine and diesel engine up to 6 hp. There is also a powerful LED-lantern capable of working for several days. The flashing mode of the SOS lamp will help to send a distress signal or warn other road users in the event of a headlight malfunction. Many users purchase the ATOM 28 for use on long hikes. The rather large weight of the device of 1 kg will not allow you to comfortably carry it in your suitcase on business trips, but when fishing, it can do a good job by feeding many different gadgets. ATOM 28 is based on 4 60C batteries, which guarantees maximum starting currents and minimum voltage drops during multiple starts.
Neoline Jump Starter 850A
NEOLINE Jump Starter 850A is equipped with a battery with 4 banks in series, which provide an output voltage when starting the engine of 16.8V. According to the manufacturer, a capacious 20,000 mAh battery allows up to 30 engine starts in sequence. The Smart Clamps power cable electronics are based on MOSFETs, which provides a number of important advantages. In particular, Smart Clamps will protect both the electronic systems of the car and the device itself from damage in case of emergency.
HIGH POWER TM20 22000
The High Power TM20 model uses a 22000 mAh battery, which allows it to start a car with gasoline engines up to 4 liters, cars with diesel engines up to 3 liters. The electronic filling of the device is capable of providing a peak inrush current of up to 1500A. In the cold, such a battery can make up to 10 full attempts to start the car. The battery can withstand up to 3000 full cycles. Of the additions, it is worth noting that wireless charging for smartphones is built into the body of the device.
FUBAG DRIVE 400
This is the most compact, lightest (only 300 g) and, at the same time, the most inexpensive device from our rating. It can be effectively used to start the engine both in summer when the battery has run out of signaling, and in winter frosts. Until fully discharged, this portable battery is capable of providing up to 6 attempts to start the engine, but it all depends on the ambient temperature. Users note that even at -30 ° C Fubag Drive 400 will last long enough. The launcher has a built-in flashlight, which can always come in handy on a long journey.
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