Tefoo operates a successful battery business serving professional OEM clients in medical, military, robotics, and other industrial sectors, specializing in the R&D and production of high-performance smart batteries and charging systems.

Focusing on the R&D and production of lithium-ion battery packs, we are committed to providing customers with high-quality battery products and solutions. Our offerings encompass standard smart battery packs and custom batteries, widely applied in measurement instruments, emergency rescue equipment, environmental testing devices, geophysical exploration gear, non-destructive testing, medical devices, and more.

Since our establishment in Shenzhen in 2012, we have served over 400 global clients. With 46 product-related patents, we have established a reliable reputation as a standardized battery pack manufacturer in the industry. Regardless of your development budget and timeline, Tefoo delivers power solutions that give your equipment a competitive edge.

Results That Exceed Expectations

Tefoo’s design experts are committed to delivering results that surpass expectations, maximizing commercial value and optimizing product performance. Your customers demand reliable equipment—which is why we are wholly dedicated to lithium battery quality. The exceptional reliability of our products guarantees quality and gives you peace of mind.

Our business organization is structured to meet customer expectations, providing comprehensive services from initial design concepts through to after-sales support. For an initial consultation regarding our ternary lithium batteries and service offerings, please contact our sales team.

Our Vision

To become the premier strategic battery partner in the market.

Our Philosophy

We seek to build strategic, long-term customer partnerships based on exceptional service. We strive to develop outstanding battery and charging solutions, delivering lithium-ion battery products that offer reliability, functionality, safety, and commercial value to our customers. We remain focused on OEM needs, embrace change, and are committed to providing premium service.

Our mission is to create and deliver premium battery products and services, empowering our customers to build safe, reliable devices that enhance lives.

Tefoo provides comprehensive solutions from power systems to complementary products and services, supplying lithium-ion battery products to original equipment manufacturers worldwide.

Headquartered in Shenzhen, China, Tefoo operates with a daily production capacity of 9,000 lithium-ion battery sets, enabling rapid response to global customer demands across multiple regions.

Tefoo’s custom lithium-ion battery and charger design and manufacturing services integrate seamlessly into your OEM equipment development projects. Our proven project management processes ensure your customized solutions are delivered on time and within budget.

Additionally, Tefoo offers standard smart lithium-ion batteries, chargers, and accessories. Standard products can also be customized with unique OEM branding, specialized software, and dedicated documentation.

We provide local technical and commercial support, domestic inventory, online purchasing, and multi-currency pricing services to facilitate customer procurement.

Driven by Research and Development

We invest 10 million RMB annually in extensive research and development projects, creating robust, future-proof power solutions tailored to our customers’ evolving needs and aligned with their long-term product lifecycles. Through comprehensive market research and customer consultations, we offer complete design freedom and objective component selection.

Through dialogue with the equipment OEM R&D community, we ensure our development focuses on your future needs and challenges, enabling seamless integration for your equipment development projects.

We leverage the latest battery innovation technologies to benefit OEMs’ next-generation equipment, maintaining ongoing dialogue with the equipment OEM R&D community—our R&D consistently centers on your future requirements and challenges.

Professional Equipment Markets

Tefoo serves global OEMs in medical, test and measurement, defense, and robotics markets, delivering high-quality, high-performance battery and charging solutions for the most demanding applications. Our products are widely used in measurement instruments, emergency rescue equipment, environmental testing devices, geophysical exploration gear, non-destructive testing, medical devices, and more, earning customer recognition for reliable performance.

When Power Failure Isn’t an Option

When powering medical devices, performance, reliability, and safety are paramount for any lithium-ion battery specification. That’s why global medical OEM manufacturers choose Tefoo when designing new battery-powered medical equipment. Tefoo boasts a proven track record of delivering rechargeable batteries and chargers for diverse medical applications, ensuring stable operation of medical devices.

Whether batteries serve as primary or backup power sources, our experienced engineers collaborate with your design team to ensure complete power solutions are delivered on time and within budget.

Our batteries and chargers undergo rigorous testing and evaluation to meet all current performance, safety, and transportation standards, including the latest IEC standards mandated for medical devices.

As experts in professional battery solutions, Tefoo provides customers with the latest lithium-ion technology, integrated smart battery electronics, and intelligent charging technology. This maximizes uptime while minimizing end-user intervention, allowing professionals to focus on their core tasks.

Bringing Life to Your Devices

When portable devices need to operate without AC power, original equipment manufacturers (OEMs) turn to Tefoo for battery and charging solutions that give their devices a real competitive edge. Our dedicated technical and commercial teams work diligently to understand the challenges associated with portable power, then create innovative battery and charging solutions that keep products running smoothly.

Tefoo specializes in developing and manufacturing rechargeable batteries that empower professionals to measure, compute, interrogate, sample, monitor, or communicate.

We’ve delivered power solutions for thousands of portable devices—from infrared monitoring to ultrasonic flaw detectors, seismic monitoring to test and measurement instruments, industrial equipment to transmission and calibration tools. All are custom-designed and manufactured by Tefoo to meet demanding client requirements.

Driving the Mission

Tefoo excels in defense and security, delivering secure, lightweight, rugged, high-energy power solutions for diverse systems—including portable communications, medical devices, emergency response equipment, night vision gear, portable computers, and critical server backups—providing high-performance, reliable power for the harshest environments.

Defense contractors, original equipment manufacturers, and leading design firms trust Tefoo to transcend conventional wisdom, producing solutions that enhance end-user benefits. These solutions feature lightweight lithium-ion technology, intelligent battery functionality, rugged environmental protection design, integrated charge control, and energy harvesting capabilities.

We understand the critical importance of military product certification and manage this process systematically and promptly, ensuring batteries meet all specification requirements.

Battery Technology: The Core of Battery Solutions

Selecting the right cell is critical to achieving optimal performance for both batteries and devices.

We collaborate closely with your engineers to gain deep insights into your application and performance requirements. Our internal, independent evaluation of cell and battery performance ensures the best cell selection for your application.

By continuously reviewing future product roadmaps for existing and emerging battery technologies, we ensure you access the latest battery innovations to maintain product competitiveness.

Electronic Design: Safety and Performance

In a world dominated by portable electronics, managing battery power demands is critical. Our embedded smart electronic systems enable batteries to manage their own charging efficiently and safely. Tefoo has accumulated extensive experience in smart battery system development, distilling this expertise into every new battery design. We serve batteries of all sizes, ensuring comprehensive safety and performance.

Mechanical Design: Strength and Durability

Understanding how batteries function within host devices is key to designing effective battery solutions.

We employ innovative design techniques combined with sound engineering principles to produce batteries that are robust and durable while remaining lightweight and compact. Our advanced battery designs enhance overall safety and reliability while minimizing costs.

Tefoo leverages the latest digital prototyping technologies to rapidly bring designs to market. We perform finite element analysis on CAD models and utilize 3D printing techniques like stereolithography or selective laser sintering to generate physical prototypes.

Mold flow simulation tests and validates injection molding designs prior to tooling, ensuring produced battery housings meet quality specifications.

Regulatory and Qualification Testing: Compliant and Accurate

At the outset of every project, we work side-by-side with your engineers to gain a comprehensive understanding of your equipment and the performance, environmental, and regulatory testing requirements of your market. We then design each battery to meet these specifications and ensure full certification is obtained before the battery enters mass production. Tefoo manages projects in accordance with IEC, UL, UN ATA, and relevant industry standards to guarantee your equipment reaches the market on schedule without delays.

Manufacturing, Quality, and Test Reliability

Tefoo’s production facility in Shenzhen, China, delivers low-cost, responsive, flexible, and scalable manufacturing services. Batteries are developed, tested, and produced under one roof, ensuring complete consistency and a single point of accountability.

We implement a robust, reliable manufacturing process underpinned by a deep culture of continuous improvement. Manufacturing safety is ensured through highly trained and motivated assembly operators, dedicated assembly fixtures, and our in-house built test equipment. This equipment programs, tests, and records data for every battery produced. Each tested battery delivers quality and peace of mind.

We are fully committed to quality because your customers demand reliable devices. The exceptional reliability of our products provides you with assured quality and peace of mind.

• Shenzhen, China: Standardized production facilities
• Flexible logistics (including VMI)
• Skilled, multi-functional operators with third-party certifications: ISO 9001, ISO 13485, and ISO 14001
• Professional warehousing services
• Order fulfillment from zero to tens of thousands to meet diverse customer needs
• Hazardous goods transportation services ensuring safe delivery of battery products

Offering Multiple Lithium-Ion Battery Options

Original equipment manufacturers vary in their power acquisition strategies and battery/charger procurement approaches. This is why we strive to simplify battery or charger integration by providing multiple development paths and flexible commercial agreements.

For customers seeking off-the-shelf solutions or requiring minor customization to existing designs, our standard smart battery and charger series may be the answer. When complete design freedom is needed, our custom battery and charger design and manufacturing services integrate seamlessly into OEM equipment development projects. Our proven project management process ensures custom solutions are delivered on time and within budget.

By choosing our lithium-ion battery customization services, you need not compromise on product design. Batteries and chargers will be co-engineered with your equipment, with weight, volume, functionality, materials, and regulatory compliance all optimized.

When complete design freedom is required, our custom battery and charger design and manufacturing services seamlessly integrate into OEM equipment development projects, creating bespoke power solutions for you.

Total Cost of Ownership

Our clientele includes leading global OEMs, many of whom have sourced customized batteries from us for years. They recognize the value we deliver:

• High-performance batteries ensuring stable device operation
• Exceptional customer service from initial concept to series production
• In-house multidisciplinary teams providing end-to-end project management for enhanced quality and efficiency
• Premium products with low return rates, reducing subsequent maintenance costs
• Product safety compliant with multiple global industry standards
• Agency testing and approvals saving clients certification time and costs
• Customized pre-production and post-production testing ensuring product quality
• Manufacturing in Shenzhen, China offering low costs while meeting ISO 9001, ISO 13485, and ISO 14001 standards
• World-class manufacturing processes guarantee production capacity and delivery efficiency
• Integrated design and manufacturing with seamless team collaboration
• Reliable project delivery on time and within budget
• Timely product supply to meet customer production demands
• Long-term commercial agreements, continuous improvement, and lean manufacturing for mutual success

Customer Service

What sets us apart is our commitment to delivering exceptional customer service throughout the entire journey—from initial concept to series production.
We take pride in creating genuine business value by enhancing your product competitiveness, generating after-sales revenue for you, and reducing your total cost of ownership.

Dedicated, Experienced Team: Full Lifecycle Service

Our technical support remains active long after product shipment, recognizing that professional market customers measure product lifecycles in years or even decades. We advise on potential battery or charger upgrades to enhance performance or reduce costs while minimizing risk.

Customer Relationships: We are committed to developing strategic, long-term partnerships through exceptional service.

We drive continuous improvement in our overall service offerings through regular development meetings and technical reviews, ensuring customers stay informed about new technologies. Working closely with clients, we have developed the following tailored services:

• Supplier-Managed Inventory
• Supplier Management
• Flexible Shipping and Ordering Options

Personalized Service

Our experienced account managers, project managers, technical support, and customer service teams collaborate closely with you throughout every project phase, taking pride in meeting your needs. Tefoo is committed to becoming an extension of your team, delivering flexibility and personalized service at every level.

What Should OEMs Look for When Selecting Smart Batteries?

Ruggedness: When batteries must operate in harsh environments, smart batteries ensure consistently safe and efficient performance. Tefoo products adapt to diverse complex scenarios.

Precise Calculation: Smart batteries reliably predict their state of charge regardless of temperature, load, or battery age, providing accurate runtime estimates for device usage.

Protection: Smart batteries safeguard against external abuse like overcharging, over-discharging, overloading, or short-circuiting, maximizing safety. Tefoo batteries incorporate multiple built-in protection mechanisms.

Power Management: Smart batteries feature multiple power levels and can reduce power output to facilitate long-term storage, extending battery lifespan.

Algorithmic Security: Security algorithms allow host devices to query smart batteries and verify their authenticity, enabling counterfeit detection and ensuring device safety.

Smart Charging: When paired with compatible chargers, smart batteries request appropriate charging strategies based on current environmental conditions, optimizing charging efficiency and battery longevity.