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About Us

AJ Power — A Lithium Battery Factory Built Around Safety

AJ Power is a lithium battery factory in Jiangmen, Guangdong, China, building custom LiFePO4 and Li-ion packs for OEMs whose equipment is not allowed to fail. Incorporated in July 2020 as Jiangmen Anengjie New Energy Co., Ltd., we work as an engineering partner rather than a catalogue supplier: most projects reach us as a drawing, a duty cycle and a space constraint, not a part number.

Across more than 300,000 deployed units, we have recorded zero thermal runaway incidents. That single number is why most of our customers stay.

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Factory-Direct Manufacturing

Automated PACK lines with in-house module production, laser welding and charge-discharge aging on every pack. Prototypes in 7 days, series production in 30–45 days.

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Built for Global Compliance

Produced under an ISO 9001:2015 certified quality system, designed and tested against UN 38.3, IEC 62619 and UL 1973 for your target market.

The Smarter Battery
.

Choice

10x

Longer Life
4,000+ Charge Cycles
60% Weight Reduction
-20°C to 60°C Operation
Redundant BMS Protection
INSIDE THE FACTORY

Inside Our Lithium Battery Factory.

Our lithium battery factory runs automated PACK assembly lines backed by in-house module production. Cells are inspected and capacity-matched before grouping, joined on laser welding equipment rather than hand spot-welded, and every finished pack goes through charge-discharge aging before it is cleared to ship.

Each pack carries a traceable serial number linking back to its cell batch, BMS firmware version and final test record. If a unit ever comes back from the field, we can tell you exactly what went into it.

The test ratio is deliberately high. Every batch goes through capacity measurement, internal-resistance measurement and visual inspection of the weld seams, and an anomaly quarantines the whole group rather than triggering rework on a single cell.

Founded in 2020

Incorporated in Jiangmen, Guangdong as Jiangmen Anengjie New Energy Co., Ltd., focused on custom lithium packs from the first order.

Manufacturing Scale-Up

Automated PACK lines and in-house module production brought online, with laser welding and charge-discharge aging built into every batch.

Engineering Depth

R&D team grown to 35 people including 8 dedicated BMS engineers, with patents filed on our pack and BMS designs.

Global OEM Programs

Packs shipping to OEMs in the UK, Denmark, the UAE and Pakistan, past 300,000 deployed units with zero thermal runaway.

ENGINEERING

An Engineering Team, Not Just an Assembly Line.

Our R&D team is 35 people, including 8 dedicated BMS engineers, led by a technical director with over 10 years in battery engineering. The team handles the work most pack assemblers outsource: design-for-manufacturing review of your mechanical envelope, schematic and PCB design, BMS parameter tuning, CANbus and RS485 integration with your controller, and the test documentation your compliance team will ask for.

There is a practical reason for keeping this in one place. Splitting pack build from BMS development costs time exactly at the interface between them, on failure modes that never show up in the lab and only appear in the field. Because both sit under one roof in the same lithium battery factory, a field problem is usually narrowed down in days rather than weeks.

We also hold patents covering our pack and BMS designs.

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35-Person R&D Team

Including 8 dedicated BMS engineers, led by a technical director with 10+ years in battery engineering.

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In-House BMS Development

Parameter tuning, firmware and CANbus/RS485 integration handled internally, not subcontracted.

COMPLIANCE

Safety and Compliance.

Production runs under an ISO 9001:2015 certified quality management system. Packs are designed and tested against the standards our customers’ markets require:

  • UN 38.3 — mandatory transport testing for lithium batteries moving by air or sea.
  • IEC 62619 — safety requirements for secondary lithium cells and batteries in industrial applications.
  • UL 1973 — batteries for stationary and motive auxiliary power applications, for North American programs.

Certificates for specific models are available on request. Tell us the target market and we will send the file set that applies.

APPLICATIONS

Where Our Packs Are Working.

Four application families account for most of what leaves our lithium battery factory. Each has different failure modes, and each gets a different BMS strategy. Our custom battery services page breaks down what we do for each, and our technical guides cover sizing, certification and sourcing in more depth.

Temperature is where most projects come undone. A pack that meets its specification at 25°C in the lab behaves very differently inside a solar lighting pole in summer or an unheated warehouse in winter, so we design against the real temperature window rather than the cell datasheet.

Medical & Mobility Power

Stairlifts, medical carts and assistive mobility, with redundant BMS safety for uninterrupted operation.

Industrial AGV & Utility

High-rate, vibration-resistant packs for AGVs, warehouse robotics and utility vehicles with CANbus/RS485.

Harsh-Environment Solar

LiFePO4 packs for smart solar street lighting and off-grid utility, resilient from -20°C to 60°C.

Storage & Backup Power

Residential all-in-one units, commercial cabinets and portable power built on our own modules and BMS.

working with us

Working With

AJ Power.

We ship to OEMs in the United Kingdom, Denmark, the United Arab Emirates and Pakistan, among others. A typical program starts with your drawing or specification. We come back with DFM feedback and a quotation, build a sample within 7 days of sign-off, then move to series production once you have validated it in your own equipment. Payment terms are 30% T/T deposit with the balance against a copy of the bill of lading.

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