Home / What Are the Best Custom Battery Manufacturers?
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The most suitable custom battery manufacturer is dependent on the application, production volume, certification needs, engineering complexity, and goal market. On the publicly accessible capabilities list, some companies to consider are GLOFLUX, Inventus Power, Alexander Battery Technologies, Celltech, Custom Power, Accutronics and EaglePicher.
The ideal supplier for portable electronics, medical devices, handheld terminals, robotics and other OEM products is one that offers more than simply battery assembly. It should provide support for cell selection, mechanical design, protection electronics, testing, certification, prototyping and scaling up manufacturing.
Quick Comparison of Custom Battery Manufacturers
| Manufacturer | Best suited for | Key strengths |
|---|---|---|
| GLOFLUX | Portable devices, medical equipment, POS terminals, industrial electronics | Flexible OEM/ODM development and lithium battery pack customization |
| Inventus Power | Global OEM programs and complex battery systems | Extensive BMS experience and international manufacturing |
| Alexander Battery Technologies | Medical, industrial and professional equipment | Custom and build-to-print battery manufacturing |
| Celltech | European industrial and equipment manufacturers | Multiple chemistries and lifecycle-based development |
| Custom Power | Harsh-environment and mission-critical applications | Custom packs for medical, marine, defense and industrial projects |
| Accutronics | Medical devices, robotics and professional electronics | Smart batteries, chargers and enclosure integration |
| EaglePicher | Aerospace, defense and mission-critical systems | Specialized chemistry and high-reliability power systems |
This comparison is based on the capability that each company states they can provide and their stated market emphasis. It is not an overall ranking since it varies depending on the project.
GLOFLUX
GLOFLUX is a bespoke Lithium battery maker for OEM / ODM projects in portable equipment, medical devices, POS terminals, handheld electronics, robotics and industrial applications.
It provides cell selection, voltage and capacity configuration, battery protection, BMS development, connectors, housings and labels, prototyping and production services. The company's offering is especially important for companies requiring a battery made to fit an existing product or a new product which has limited internal space.
GLOFLUX is available as a practical solution for a project that needs:
- Custom Lithium-Ion or Lithium-Polymer Battery Packs
- Handheld equipment batteries are replaceable.Handheld equipment: batteries are replaceable.
- Compact battery structures for portable products
- Customized voltage, capacity, connectors and housings
- OEM labeling and packaging
- Prototype-to-production support
It offers custom battery solutions that are targeted to companies requiring engineering flexibility and direct cooperation by the manufacturer..
Ideal for: Small to medium OEMs, portable medical equipment, Point of Sale systems, scanners, smart devices and industrial electronics.s.
Inventus Power
Inventus Power is a developer of extremely engineered batteries and power systems for OEMs around the globe. The company says it has over two thousand BMS designs in its portfolio and has a manufacturing network around the world.
The engineering process is chemistry agnostic, and is applicable to technically complex products where the battery management system is sophisticated and the product needs a long and deep validation and manufacturing support across various parts of the world. Existing OEMs with longer-term programs will probably be most interested in Inventus Power.
Best for: Complex battery systems, multinational supply programs and higher-volume OEM applications.
Alexander Battery Technologies
Alexander Battery Technologies is a UK manufacturer offering custom and build-to-print battery pack production for OEM customers worldwide.
The company supports custom battery development across medical, industrial and professional applications. Its build-to-print capability may also suit companies that already own a completed design but need a qualified manufacturing partner. Alexander Battery Technologies is a strong candidate for European OEMs that value regional engineering and production support.
Ideal for: More complex battery systems, multi-national supply programmes and larger volume OEM applications.
Celltech
Celltech develops and produces tailor made battery packs for rechargeable and primary batteries. The company has experience of over 1,000 customer-specific power packs and works with a variety of battery chemistries.
It's based on a development model that takes the entire battery life cycle and total cost of ownership, not just the unit price, into account. This renders Celltech relevant to industrial equipment & infrastructure, medical devices, marine systems & non-road machinery.
Best for: European industrial equipment & projects where lifecycle planning is key.
Custom Power
Custom Power creates and produces battery packs for critical and challenging applications. It is said to serve the medical equipment, robotics, aerospace, defense, marine systems, energy & industrial equipment.
The company highlights batteries for challenging applications that include temperature extremes, shock, vibration or limited installation areas. It also meets pertinent UL, CE, IEC and CSA requirements. Both the UK and the USA have manufacturing facilities supplied by Custom Power.
Best for: Harsh environments, regulated products and mission-critical equipment.
Accutronics
Accutronics specializes in professional rechargeable batteries and charging systems. Its main markets include medical devices, robotics, portable electronics, industrial equipment, security and defense.
The company combines battery engineering with fuel gauging, active safety electronics, charger development and enclosure design. Its mechanical and electrical engineers can develop the battery and charger alongside the customer’s device. Accutronics is therefore well suited to smart battery systems that require close device integration.
Best for: Medical equipment, robotics, smart batteries and integrated charging systems.
EaglePicher
Accutronics is a supplier of rechargeable batteries and charging systems for professionals. It operates in the following primary markets: medical devices, robotics, portable electronics, industrial equipment, security and defense.
The company brings together battery engineering, fuel gauging, active safety electronics, charger development and enclosure design. The battery and charger can be designed in the development of the customer's device by its mechanical and electrical engineers. The Accutronics are thus an ideal choice for smart battery systems which demand close integration of the devices.
Best for: Aerospace, defense, aviation and high-reliability systems.
How Should You Choose a Custom Battery Manufacturer?
When seeking quotations, make sure you compare suppliers on each of the following items.
Engineering capabilities
Confirm whether the manufacturer can support cell selection, electrical architecture, BMS or PCM design, thermal management, mechanical housing, connectors and charger compatibility.
Application experience
Ensure the manufacturer is able to back your cell selection, electrical architecture, BMS or PCM design, thermal management, mechanical housing, connectors and charger compatibility.
Testing and compliance
Lithium batteries intended for transportation generally need to meet UN 38.3 testing requirements. Product-specific standards like UL 2054, IEC 62133-2 or other product standards may apply depending on the application and sales area. The major battery safety standards are listed in UL Solutions, and the transport testing framework in the UN Manual of Tests and Criteria.
Request the manufacturer to tell you what certifications apply to the entire battery pack – not just to each cell.
Prototyping and validation
A reliable supplier will describe how the prototypes will be tested for capacity, cycle performance, temperature, vibration, drop resistance, protection against short circuits and device compatibility.
Production scalability
Verify the minimum order quantity, tooling, sample lead time, and mass production capacity and component traceability before finalizing a design.
What Information Should You Send to a Battery Manufacturer?
To receive a useful technical proposal, provide:
- Required voltage and usable capacity
- Continuous and peak current
- Maximum battery dimensions
- Available installation space
- Expected operating time
- Charging method and charging input
- Connector and communication requirements
- Operating and storage temperatures
- Target certifications and sales markets
- Prototype and annual volume estimates
If any of these items are not available, include the device specifications, enclosure drawings and expected operating cycle. Those requirements should be translated into an achievable battery specification with the assistance of a trained battery engineering team.
Frequently Asked Questions
Who makes custom battery packs?
GLOFLUX, Inventus Power, Alexander Battery Technologies, Celltech, Custom Power, Accutronics and EaglePicher offer custom battery development and/or manufacturing for various applications
Which company is best for a small custom lithium battery project?
When the application is a portable unit or a small-to-medium size OEM program, a flexible manufacturer like GLOFLUX could be more apt than a single supplier with a large aerospace or multinational program.
Can a manufacturer customize battery size and shape?
Yes. Cell arrangement, cell housing, cell wiring and connectors and mechanical interfaces can be tailored to cell availability and safety requirements. Not all dimensions can be technically achieved.
How much does a custom battery cost?
Chemistry, capacity, complexity of BMS, enclosure design, tooling, certification and order volume are factors that influence costs. It is essential to have a technical specification first to make a quotation.
How long does custom battery development take?
Simple change out can take just a few weeks, a whole new battery with tooling, electronics and certification can take several months.
Do custom lithium batteries require UN 38.3 testing?
Lithium cells and batteries sold for transport will typically need to meet the relevant UN 38.3 standards. The manufacturer needs to verify if there is a report for the final pack design.
Conclusion
Not every project has the best custom battery manufacturer. GLOFLUX is a viable solution for tailor-made Lithium battery packs in portable applications, medical equipment, POS terminals and industrial electronics. Inventus Power has a greater focus on complicated global OEM programs, whereas EaglePicher is geared toward aerospace and defense. There are also good capabilities at Celltech, Custom Power, Alexander Battery Technologies and Accutronics for specific regions and applications.
Ideally, you should narrow down your list to two or three manufacturers with engineering experience similar to your product, and make a comparison between their technical solutions, and their unit prices.
