FAQ'S AND SUPPORT

While lead acid batteries and AGM options often need replacing every 3 to 5 years, quality LiFePO4 batteries can last up to 10 years or more with proper use and storage. Most lithium-iron phosphate batteries are rated for 2,000 to 5,000 charge cycles.

This comparison highlights the lifespan and charging behavior of AGM (Absorbed Glass Mat) and Lithium-ion batteries. For jump starters, AGM batteries tend to last 3-5 years and charge quickly, while Li-ion batteries can last longer (5+ years) and provide better performance with less frequent use.

Battery life on motorcycles: This provides insights into the longevity of motorcycle batteries and how maintenance can influence it. This is useful for understanding how jump starters may need to be maintained or replaced to ensure they continue to function well over time.

The JS-557 auto emergency jump starter is a portable 12V battery jump starter you can carry anywhere. Typically, it takes about 30 seconds to 1 minute to jumpstart a 12V battery, depending on the battery’s condition and vehicle type. After connecting the jump starter, wait a few seconds before attempting to start the engine to ensure sufficient power delivery.

A: the 12V lithium-ion battery is built in CARKU jump starter. When your 12V car battery is nearly drained, you can take your jump starter out, plug one end of jump cable into the device, and other end to connect car battery "+" and "-", then start the engine. you can make it.  Besides, you can use USB cable to connect different output port to charge different mobile devices as a battery charger.

It supports car jump start and use with parking air conditioning. Our lithium battery uses a newly customized special low-temperature battery cell, which can also be used in cold areas. The battery cell is also a safer lithium iron phosphate battery cell. The battery cycle life is more than 3000 times, and it can generally be used for about 8 years. The battery has multiple safety protections, and its service life and safety far exceed those of ordinary batteries. It has a five-year national warranty, comes with one-button forced start + GPS positioning, and supports mobile phone connection to monitor the battery.

No. This product is a lithium battery product. According to international air transport standards and regulations, the capacity of lithium battery products carried cannot exceed 100Wh.

A: Choosing a portable jump starter is very important to your car and your safety. many accidents happen due to unqualified lithium battery built-in jump starter. so we should take those into consideration:

Power (Cranking and peak power decide whether jump starter can boost your vehicle.)

Safety (It is related to jump starter itself and your property and life.)

Multifunction (it will add more additional features to car jump starter, high value)

Brand (Good after-sales service if you buy the branded jump starter, such as CARKU)

Price ( we always choose the best price for best product)

Yes — a 24V LiFePO₄ jump starter is widely considered one of the safest and most reliable lithium-based solutions for starting a 24V vehicle battery system, especially in heavy-duty or RV applications.

Under normal use, it can be recycled more than 1000 times.

If not in use, it can be stored for 6-12 months. However, in order to extend the service life, it is recommended to charge it every three months. If the lithium battery is not used for a long time, its performance will deteriorate and may affect the starting effect.

1) Start in 2-3 seconds, remove after 30 seconds, and wait 30 seconds between each jump start.

2) The host power indicator light must be greater than or equal to 3 lights to jump start the car.

3) The single jump start time is within 3 seconds; it is recommended to wait more than 30 seconds between each jump start

Reason:

1) After jump starting, the product is in the engine compartment and the engine is running, which is unsafe

2) The product power is less than 3 grids and cannot be jump started

3) The interval between each jump start is 30 seconds to prevent the line from overheating and wait for the battery voltage to rise

1) First insert the blue connector of the battery clamp into the host, and make sure that the indicator light of the battery clamp is off.

2) Then correctly connect the battery clamp to the positive and negative poles of the car power supply, the red clamp to the positive pole of the battery (+), and the black clamp to the negative pole of the battery (-). The green light is on: it means that the connection is correct and the power is on, and you can jump start.

3) The red light is on and a buzzer sounds: it means that the positive and negative poles are connected incorrectly. Please reconnect correctly and jump start after the green light is on.

4) The green light flashes and a buzzer sounds: it means that the battery voltage is too low. Please press the BOOST button. After the green light is on, jump start within 30 seconds.

5) Neither the red or green lights are on, and there is no buzzer: it means that the battery may be completely damaged. Please make sure that the positive and negative poles are connected correctly, then press the BOOST button. After the green light is on, jump start within 30 seconds.

Using a 5V/2.4A charger, most models can be fully charged in about 3-4 hours.

Car Jump Starter is a multifunctional portable power bank developed for car lovers and business people. Its special function is to jump start the car when the car is out of power or cannot be started for other reasons. It can also be used to charge digital products and outdoor lighting. At the same time, it can also be used with some car equipment, such as air pumps, car refrigerators, etc. It is one of the must-have products for car owners.

High-capacity ultra-large polymer lithium battery, it has the characteristics of small size, light weight, long power, safe use, etc. Polymer lithium-ion battery is the most technologically advanced in the battery industry and belongs to the latest generation of rechargeable lithium-ion batteries.