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Gallery View: Li-ion batteries & packs from China

Global SourcesUpdated on 2023/12/01

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China's typical cylindrical and prismatic Li-ion batteries come in 60 to 12,000mAh units. Packs are based on custom capacity.

Mainstream Li-ion batteries from China suppliers have capacity ranging from 60 to 12,000mAh and nominal voltages of 3.2, 3.6, 3.7 and 3.8V.

Cylindrical kinds come in 10440, 14430, 14500, 1350, 18650 and 26700 sizes. Units in 18650 form the bulk of output. These usually have 1,200 to 3,200mAh capacity and 3.6 or 3.7V nominal voltage.

Prismatic variants, which are in custom sizes, have 400 to 3,200mAh and 3.7 or 3.8V.

In battery packs, companies continue to highlight cell-to-cell conformity in aspects of capacity, voltage, impedance, and charge and discharge states for product stability and safety. Releases vary widely with buyers' requirements on capacity, voltage and dimensions. Models range from 3.2 to 576V, depending on the application.

For the 3C segment, especially consumer electronics, there are units based on NMC and NCA combinations, complementing the LiCoO₂-dominated selection. LiMn₂O₆ types are also on offer, targeting mainly power tools and electric bikes. For drones, Li-polymer variants constitute the primary category.

A few companies also turn out lithium-titanate batteries. They include Microvast, Citic Guoan Mengguli, Yintong and Tianjin EV Energies.

Manufacturers use local cathode and anode materials, and electrolytes, capitalizing on their wide availability there.

For the first input, including LiCoO₂, NMC, NCA, LiMn₂O₄ and LiFePO₄, the key providers include Hunan Shanshan Toda, Pulead, Xiamen Tungsten, Ningbo Jinhe and Hunan Reshine. Cathodes account for more than 30 percent of total cost.

As for anode materials, graphite remains widely used. Shenzhen BTR, Hunan Shanshan Toda, Jiangxi Zichen and Hunan Shinzoom are among the major sources.

Separators are still obtained mostly from foreign companies such as Asahi, Celgard and Tonen.

Input and component costs are relatively stable and will keep prices steady in 2017.

Here is a selection of Li-ion batteries and packs from China.

3.7V Li-ion battery pack has 5,200mAh capacity

Dongguan Large Electronics Co. Ltd's model 03DQ0052-06T Li-ion battery pack consists of 18650 cells in 1S2P configuration. Its nominal capacity and voltage are 5,200mAh and 3.7V, and internal resistance is ≤150mohm.

The unit has 4.2V charging and 3V discharging cutoff voltages, and 1,040mA nominal and 2,100mA maximum charging and discharging current. It supports charging and discharging temperatures of -20 to 60 C and -20 to 45 C, and stores in -20 to 60 C for less than 1 month and -20 to 45 C for less than 3 months. Dimensions are 69x39x19mm and weight is 110g.

The minimum order is 500 units, and delivery is within 30 days.

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13Ah Li-ion battery pack for electric bikes

Developed for electric bikes, model BKE-48V 13AH Li-ion battery pack from Shenzhen BAK Energy Co. Ltd has 13Ah nominal capacity. Its maximum discharge rate is 2C.

The 48V unit uses 18650 cells and has a built-in battery management system to protect against overcharging, -discharging, -heating and short circuits, and ensure balance charging. The battery pack meets CE and UN38.3 standards. It can be customized.

The minimum order is negotiable. Delivery lead time is 20 days.

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4,000mAh Li-ion battery pack for robots

Shenzhen JKN Battery Co. Ltd offers a Li-ion battery pack for robots, 11.1V/4000mAh model, which provides 4,000mAh capacity and has ≤200mohm internal resistance.

The unit uses 18650 cells and requires constant-current/constant-voltage charging method. It has 0 to 45 C charging and -20 to 60 C discharging temperatures. Pack dimensions are customizable. The minimum order of 100 units is delivered within 7 days.

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Li-ion battery delivers 2,200mAh capacity

Model ICR 18650-2200mAh from Shenzhen Tuosi Innovation Technology Co. Ltd is a Li-ion battery with 2,200mAh nominal capacity. The 3.7V unit is 18x65mm.

The supplier requires an order of at least 20,000 units. Delivery is within 15 days.

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18V Li-ion battery pack delivers 7Ah capacity

This 18V Li-ion battery pack from Sixpack Technology Co. Ltd, SP52RB model, is for power supplies used in robots. It has 7Ah capacity, 21V charging voltage, and 3A charging, 5A constant discharging and 10A peak discharging current.

The unit consists of Sanyo 18650GA cells and the maker's own protection circuit module. It measures 100x40x75mm and weighs 550g.

The minimum order of 500 units is delivered within 25 days.

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