18650 Battery Factory

Shenzhen HLC Battery Tech Co., Ltd. is a factory that produces 18650 lithium batteries and polymer lithium batteries for the production and operation of battery products. Through the digestion and absorption of foreign advanced battery manufacturing technology in recent years, and continuous innovation, the discharge performance and storage performance of HLC battery are at the international advanced level.

In order to be in line with international standards as soon as possible, HLC has established a complete set of battery product research and development processes and material certification systems since its establishment. The establishment of internal control quality standards to meet the needs of customers, strict process management, and quality inspection, fully guarantee the excellent quality and more lasting endurance of our batteries.

18650 Cell Brief Instroduction

18650 lithium battery is a common lithium battery model. The numbers 18650 represent the appearance size: 18 refers to the battery diameter of 18.0mm, and 650 refers to the battery height of 65.0mm.

The rated voltage of the 18650 lithium battery is 3.7v, the common capacity is 1500mAh to 2600mAh, and the maximum can reach 3000mAh. In order to meet the needs of more equipment, the 18650 lithium battery pack came into being. It is assembled according to 18650 cells in series and parallel to achieve higher voltage and longer discharge time.

18650 Battery Pack Manufacturing Process

  1. The 18650 lithium battery packs are neatly arranged, which is helpful for easy maintenance in the future. It is best to use a standard 18650 battery tray;

  2. Welding is good, and the most common welding method on the market is spot welding with a nickel welder. You can also use an electric soldering iron, and the solder joints are in good contact;

  3. After welding, the lines of each group of batteries must be clearly arranged;

  4. Do a good job of waterproofing and insulation, it is best to cut a piece of highland barley paper or use asbestos material;

  5. The most important point, the internal resistance of the battery before welding, the current-voltage error should not exceed 0.05V! Conditionally, a special protection board for 18650 lithium battery pack must be added to prevent overshoot and over-discharge;

  6. After welding, measure whether the voltage of each circuit is good;

  7. After the newly assembled lithium battery pack has been used for a period of time, the voltage of the batteries should be checked in groups.

The above is the production process of 18650 lithium battery and the assembly method of lithium battery. The production process of 18650 lithium battery pack is quite complicated. After all, the safety performance of lithium ion battery products is directly related to the life and health of consumers. , precision, stability and automation level have higher requirements.

18650 Battery Chemistry

The main components of lithium-ion batteries include shell, electrolyte, anode material, cathode material, adhesive, copper foil and aluminum foil. Among them, the mass fractions of Co, Li, and Ni are 5%~15%, 2%~7%, 0.5%~2%, and metal elements such as Al, Cu, Fe, etc.; Materials and cathode materials account for about 33% and 10%, and electrolyte and separator account for about 12% and 30%, respectively. The main metals recovered in spent Li-ion batteries are Co and Li, mainly concentrated on the cobalt-lithium film on the anode material.

In particular, my country’s cobalt resources are relatively poor, and development and utilization are difficult, and the mass fraction of cobalt in lithium-ion batteries accounts for about 15%, which is about 850 times that of associated cobalt ore. At present, lithium-ion batteries with LiCoO2 as the positive electrode material are widely used, which contain lithium cobalt oxide, lithium hexafluorophosphate, organic carbonate, carbon materials, copper, aluminum and other chemical substances.

Matters needing attention in lithium-ion battery customization

Li-ion battery pack customization is different from mass-produced products. It is independently developed and designed for different products. Therefore, in the process of customization, a certain fee must be paid (generally involving mold opening costs, development costs, and product proofing costs).

Research and development time: The length of research and development time is directly related to the new time of the product. The general research and development time of lithium-ion battery pack customization is about 30 days, and the fast research and development channel is implemented. Generally, the proofing time of products that do not need to be opened can be shortened to 15 days. ;

18650 battery pack design

18650 Cell Battery Models with Specs

Samsung ICR18650-26J 2600mAh Battery

Samsung INR18650-25R 2500mAh Battery

Samsung INR18650-20S 2000mAh Battery

LG HG2 18650 3000mAh 20A Battery

LG 18650 HD2 2000mAh 25A Battery

LG Chem 18650 HE2 2500mAh Battery

BAK 18650 3050mAh 6.1A Battery

BAK 18650 3350mAh 6.5A Battery

BAK 18650 2500mAh 20A Battery

Overseas 18650 Battery Cell List

ModelCapacity(mAh)Voltage(V)Diameter(mm)Height(mm)Weight(g)
Samsung-INR18650-20S20003.718.4365.0048.0
Samsung-INR18650-25R25003.718.3364.8545.0
Samsung-ICR18650-26J126003.718.4065.0045.0
Samsung-INR18650-30Q30003.718.3364.8548.0
Samsung-INR18650-35E33503.718.5565.2550.0
LG-18650 HE225003.718.365.048.0
LG-18650 HD220003.718.365.048.0
LG-INR18650 MH132003.718.3965.1549.0
LG-INR18650 HG230003.718.3965.1549.0
LG-LG18650 MJ135003.718.3965.1549.0
Panasonic-UR18650-NSX26003.718.5065.3045.8
Panasonic-NCR18650BE32003.718.5065.3047.5
Panasonic-NCR18650PF29003.718.5065.3046.5
Sony-US18650VTC420003.718.3565.2045.0
Sony-US18650V322503.718.2064.943.6
Sony-US18650VTC5A25003.718.3565.047.1
Sony-US18650VTC630003.718.5065.2046.6

Chinese 18650 Battery Cell List

ModelCapacity(mAh)Voltage(V)Diameter(mm)Height(mm)Weight(g)
EVE-ICR18650/20P20003.718.3565.0045
EVE-INR18650/25P25003.718.3565.0048
EVE-ICR18650/26V26003.718.3065.0548
EVE-INR18650/29V28503.718.3065.0044.5
Roofer-INR18650-2000A20003.718.1064.9046.5
Roofer-INR18650-2200A22003.718.465.145.7
Roofer-INC18650-2600A26003.718.465.145.7
BAK- 18650C422003.718.365.044.0
BAK-B18650CA22503.718.465.048.0
BAK-C18650CC26003.718.465.048.0
BAK-H18650CH26003.718.465.048.0
BAK-C18650CE30003.718 465 049 0
BAK-H18650CB20003.718.465.045.0
DMEGC-INR18650-20PA20003.718.665.545.0
DMEGC-INR18650-26E26003.718.2564.9547.0
DMEGC-INR18650-29E29003.718.2564.9547.0

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