Jikong, also marketed as JK BMS or JKBMS, is a Chinese technology brand that specializes in battery management systems (BMS). The company focuses on smart BMS products utilizing active cell-balancing technology. Its devices are designed primarily for lithium-based battery packs used in energy storage, electric vehicles, mobility applications, and DIY battery systems. 1

The company describes itself as a developer and manufacturer of intelligent battery-management technology, with a particular emphasis on active balancing, wireless communication, functional safety, and battery-capacity management. 1

Jikong’s history is linked to the development of battery-management and battery-protection electronics in China. According to current distributor sources, Jikong (JK) was founded in 2018 in Chengdu, Sichuan, emerging as a high-tech enterprise focused on the research, development, manufacture, and sale of intelligent BMS products. 2

Jikong’s own materials highlight its specialization in lithium-battery BMS technology, distinguishing it from general-purpose electronics manufacturers. The company has developed OEM/ODM capabilities and states that it has accumulated patents and other intellectual-property achievements through its R&D activities. 3

The core product line of Jikong consists of smart Battery Management Systems. A BMS monitors and controls individual cells within a rechargeable battery pack, helping to protect the pack from operating outside safe electrical and thermal limits.

Jikong’s product range includes BMS units tailored for various specifications:

• Battery chemistries: Including Li-ion, LiFePO₄, and LTO.
• Cell configurations: Such as 4S–8S, 8S–16S, and higher series counts.
• Current requirements: Ranging from low-current systems to high-current battery packs.
• Applications: Energy-storage and power-battery uses.
• User types: DIY, commercial, and industrial battery systems. 2

Some Jikong BMS models incorporate Bluetooth, Wi-Fi, RS485, RS232, CAN bus, and other communication interfaces, allowing users or external equipment to monitor and configure battery parameters. 4

Active Balancing Technology

A major characteristic associated with Jikong is its emphasis on active cell balancing.

In conventional passive-balancing BMS units, excess energy from higher-voltage cells is typically dissipated as heat. In contrast, active balancing transfers energy between cells, helping to bring them closer to the same voltage and state of charge. Jikong identifies active equalization, along with wireless transmission, functional safety, and capacity management, as four of its key technology areas. 1

This technology is particularly beneficial in larger battery packs, where differences between individual cells can become significant over repeated charge/discharge cycles.

Jikong presents itself as an original manufacturer, rather than merely a reseller of third-party BMS boards. Published company information details dedicated manufacturing and testing facilities, including an SMT production operation. 3

Distributors describe the company’s manufacturing process as involving automated SMT assembly and automated quality testing. Reports indicate that Jikong ships millions of units annually and serves customers in more than 60 countries, although these figures represent company and distributor claims rather than independently audited statistics. 2

The company’s ecosystem supports both standard products and OEM/ODM development, enabling battery manufacturers and other businesses to request customized BMS solutions. 3

Jikong’s smart BMS products generally integrate several functions onto a single electronic control board:

1. Cell-voltage monitoring: Measures individual cells in a battery pack.
2. Current monitoring: Tracks charging and discharging currents.
3. Temperature monitoring: Monitors battery and/or BMS temperatures.
4. Protection: Guards against overcharge, over-discharge, excessive current, and excessive temperature.
5. Cell balancing: Equalizes cell voltages, with a focus on active balancing.
6. Battery-state monitoring: Calculates data such as voltage, current, capacity, and state of charge.
7. Communications: Provides interfaces like Bluetooth, CAN, RS485, or Wi-Fi depending on the model.
8. Mobile/PC configuration: Compatible models allow for configuration and monitoring via software or mobile applications. 4

For instance, documentation for the JK-B2A8S20P model highlights support for 4–8 series lithium cells, active balancing, Bluetooth/display functionality, protection features, and high-current operation.

The brand is frequently encountered online under several related names, which can sometimes cause confusion among retailers and distributors:

• Jikong
• JK
• JKBMS
• JK BMS
• JK-BMS

Company and affiliated materials explicitly associate Jikong with the JK/JKBMS product family. 5

Jikong BMS products are intended for a broad range of lithium-battery applications, including:

• Home energy-storage batteries
• Solar-storage systems
• LiFePO₄ battery banks
• Electric vehicles
• Electric bicycles and scooters
• Recreational vehicles and boats
• Portable power systems
• DIY battery packs
• Industrial energy-storage systems
• Other rechargeable battery applications 2

The capability to support relatively high currents, multiple cell counts, and communications such as CAN bus makes certain Jikong products suitable for integration with sophisticated inverter and energy-storage systems.

Jikong’s published information notes certifications and compliance programs associated with its products, including CE, RoHS, FCC, REACH, and WEEE for relevant models. It is important to note that exact certifications depend on the specific model and market; they should not be interpreted as applying universally to every Jikong product. 3

The company and its distributors also emphasize rigorous product testing, quality-management processes, and adherence to functional-safety requirements for certain products. 2

Jikong occupies a notable niche in the aftermarket and DIY lithium-battery BMS market. Its products are particularly visible among battery builders and energy-storage enthusiasts due to features such as:

• Active balancing
• Relatively high balancing currents on selected models
• Bluetooth monitoring
• Programmable protection parameters
• CAN/RS485 communications
• Support for multiple lithium chemistries
• High-current models
• Availability of individual BMS units for DIY construction

The brand maintains an official product website and dedicated sales/distribution channels. 3

Jikong’s stated philosophy centers on product quality, technological development, battery safety, and environmental sustainability. The company’s profile describes its goal as pursuing product perfection, supporting environmental protection, and contributing to the advancement of electric-vehicle technology. 1

Practically, the brand’s identity is strongly tied to improving the safety, longevity, monitoring, and performance of lithium-battery systems.

It is important to distinguish this brand from another Chinese entity called Shandong Jikong Auto Parts Co., Ltd. Founded in 2001, this separate company operates in the automotive aftermarket. It supplies passenger-car spare parts, offers more than 50,000 types of components, and exports to more than 70 countries according to its own website. 6

That automotive company should not be confused with Jikong/JK BMS, the battery-management-system brand discussed above.

*The 2018 founding date comes from Jikong’s current distributor/company materials; corporate-history details can vary between Jikong-affiliated websites. 2

1. About us – jikong
2. About JKVOLT | Authorized JIKONG BMS Distributor
3. About – JIKONG BMS
4. SUPPORT – JK BMS JIKONG BMS JKBMS JK-BMS
5. JKBMS Store Home Alt | JKBMS JIKONG BMS FACTORY STORE
6. Shandong Jikong Auto Parts Co., Ltd. Company Introduction