The number 18650 only reflects the size specification. As for voltage, electricity and other electrical performance specifications are customized according to different technical capabilities and product requirements.
Short-circuit, over-charge, over-discharge protection
Heating, crush, impact, drop, vibration, and nail test
500 cycles of charge & discharge. Low self-consumption.
The application field of 18650 lithium battery is really too extensive. When a senior battery engineer analyzed the application field and application prospect of 18650 lithium battery, he found that it is really ubiquitous and pervasive. Basically, 18650 lithium battery is used for charged equipment. All solutions can be involved. Its huge market has also made the 18650 lithium battery one of the industry-standard products. With the advancement of technology, the application field of 18650 lithium batteries is constantly making breakthroughs in new fields. Let’s take a look at this. For the horror market of 18650 lithium battery applications.
Clean the surface of each cell. Ion cleaning is used here to ensure that the contaminants in the process do not adhere to the bottom of the cell.
Before assembling the cells, the surface should be coated with glue. In addition to the fixed use, the use of glue can also serve the purpose of insulation and heat dissipation.
The battery modules are mostly welded by aluminum end plates and side plates, which are laminated and welded by robots.
After the welding monitoring system accurately locates the welding position, it binds the wire harness isolation board material barcode to the MES production scheduling management system to generate a separate code for traceability.
Through automatic laser welding, the connection between the pole and the connecting piece is completed, and the battery is connected in series and parallel.
Check the full performance of the module before going offline, including module voltage/resistance, battery cell voltage, withstand voltage test, and insulation resistance test.
There are no burrs, cracks, stains, pinholes, leakage and other appearance defects on the surface.
It requires to meet the defined wire length, wire model, battery size(length, width, thickness). Of course, it has some tolerance
All batteries come with short-circuit, over-charge, over-discharge protection. Less than resistance and conform to delivery voltage.
Generally, it shall meet the minimal capacity based on 0.2C rate discharge current. You can test based on 0.5C rate.
The cell shall pass following testing items: external short-circuit test, heating test, crush test, impact test, drop test.
It requires to meet discharge performance at high & low temperature, such as 55℃ and -10℃ with 0.2C rate.
As shown in the picture on the above, it is a battery pack that comes out in series and parallel, and its capacity is 81.4V/30Ah.It must be noted that when choosing 18650 lithium batteries in series and parallel, the consistency of the selected single-cell battery is better. If the single-cell difference is too large, it will cause damage after a long time.
Some people have disassembled Tesla’s battery packs. There are more than 7,000 18650 batteries in total. So many battery packs are connected in series and in parallel together. The series type is to increase the total voltage of the battery pack, and the parallel type is to expand the capacity of the battery pack. Commonly called in the industry A few strings together.In order to assemble a 60V battery pack, take a single 2000mAh 18650 as an example, only need to 60/3.7=16 18650 A 59.2V battery pack can be obtained by connecting in series. These 16 cells are called a string. If more capacity is required, multiple strings need to be connected in parallel.
As we know, it is a key parameter of discharge time while designing a new device. It will affect the end consumer work experience, of course, the engineer wanna a longer last time and a cheap battery pack.
Now we briefly evaluate the battery running time by the below formula.
Discharging Time=Battery Capacity*Battery Volt/Device Watt.
For a 18650 2600mAh(2.6Ah) battery with a device that draws 500mA(0.5A) you have: 2.6Ah/0.5A=5.2 Hours. However, it is just a theory. At real life, we must consider the peak current, loading, and whole consumption of device.
Right image is some of our 18650 battery connectors. They are XTR30U, XT30U, XT60U, XT60H. Of course, we can meet customers with unique demands.
01 Security is Paramount
At HLC, we follow and enforce Security Best Practices for all our clients, as well as internally. We educate our team and our clients on battery security to keep safe. We got your back!
02 High Touch Communication
Our goal is to answer every emails and calls with a LIVE person. It can be a problem of battery, or technical support, even free sampling.
03 Satisfaction Guaranteed
All our documents and batteries come with an unprecedented 100% efforts to support our clients.
04 Committed to Quality
We don’t pursue every customer. We choose only clients that share our values. We cherish customers who respect and support each others. It is our long-term business running principle.
05 Free samples
We can provide free samples after the technical and datasheet are approved. It will prove our lithium battery quality and manufacturing artworks.
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We will get back to you at any time and anywhere. Just let me know your ideas and requests.
We are happy to say that after our hard work and persistence, we have received praise from our customers, thank you for their support, and we will continue to work hard.
DB Technology works with some of the top brands around the world such as Bose, ZAGG, Victrola etc. We came to HLC with a very specific set of requirements needed to replace a defective battery from another “low cost” supplier. Henglichi not only met or exceeded all the specifications, including safety tests, they actually beat the previous vendors price!
With this company, we’ve had no issues with quality, no issues with lead times and the engineering support has been excellent in designing and producing the needed battery solution for our customer’s needs. Even better, all testing services have worked perfectly to accommodate international sales with the required certifications.
Just what I needed to replace my old batteries, these are good quality batteries with a high power rating. The batteries are working really well as none have yet run out of charge for what they are being used for. I bought over 30x batteries of this company for kids toys and hand held home items. Cheaper then branded batteries and works the same.
Reliable & durable lithium-ion battery manufacturer in China with over 10 years experience.
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