Custom Smart Lithium-Ion Battery Solutions for OEM Equipment
In modern equipment design, the battery is not just a power source—it directly impacts system stability, runtime predictability, and operational safety.
Tefoo provides custom smart lithium-ion battery solutions for OEM equipment manufacturers, supporting system-level integration across electrical design, communication interfaces, and mechanical constraints.
Depending on your project requirements, choosing between a standard battery and a custom battery solution is a critical early decision.
Standard vs Custom Battery: How to Choose
Not every application requires a custom battery. In many cases, standardized smart battery packs offer a faster, lower-risk path to market.
If your project falls into the following scenarios, a standard battery solution is typically recommended:
- Products intended for global markets requiring mature certification support
- Flexible purchasing requirements without minimum order quantity (MOQ) constraints
- Limited development budget or no dedicated battery engineering resources
In contrast, a custom battery solution becomes necessary when:
- Mechanical space constraints prevent the use of standard battery formats
- Specific voltage, capacity, or discharge profiles are required
- Battery-to-device communication is needed (e.g., SMBus integration)
- Application-specific safety, environmental, or regulatory requirements must be met
Comparison Overview
| Criteria | Standard Battery | Custom Battery |
|---|---|---|
| Time to Market | Immediate / Short | 3–6 months development |
| MOQ | No MOQ | Based on project evaluation |
| Development Cost | No NRE required | Engineering & validation required |
| Flexibility | Limited | Fully customizable |
| SMBus / Smart Features | Available (fixed) | Fully configurable |
| Mechanical Fit | Fixed design | Designed for device integration |
| Certification | Pre-certified | Project-specific |
This comparison helps define the most efficient path before entering development.
Custom Battery Engineering Capability
Tefoo develops battery systems beyond basic cell assembly, focusing on full integration with OEM equipment requirements.
At the electrical level, battery management systems (BMS) are designed to monitor voltage, current, and temperature, ensuring safe and stable operation. Protection mechanisms include overcharge, over-discharge, overcurrent, and thermal management.
For intelligent applications, SMBus communication is implemented to enable real-time interaction between the battery and the host device. This allows accurate reporting of state of charge (SOC), runtime estimation, and battery health.
Fuel gauge configuration and calibration are optimized based on real application conditions, improving accuracy under varying loads and environments.
Mechanically, battery packs are designed to fit within device constraints, ensuring reliable connections, structural integrity, and ease of maintenance.
All custom solutions are built on proven cylindrical lithium-ion platforms (18650 and 21700), supporting both smart and non-smart architectures to ensure long-term stability and supply continuity.
If you want to learn about our custom battery cases, you can go to our new website to view our custom cases.
Development & Integration
Custom battery development is a coordinated engineering process aligned with your product development timeline.
At the initial stage, we typically evaluate both technical requirements and project conditions, including:
- Project stage (concept, prototype, or production)
- Timeline for prototype, pilot run, and mass production
- Estimated annual demand
- Type of equipment and application scenario
This information allows us to determine whether a standard solution is sufficient or a custom design is required.
The development process generally includes requirement definition, system design, prototype validation, performance testing, certification support, and mass production readiness. The typical development cycle ranges from 3 to 6 months, depending on project complexity and certification requirements.
Tefoo also provides engineering documentation and integration support, including datasheets, 2D/3D drawings (available upon request), SMBus communication protocols, and certification files, enabling efficient system integration.
👉 Explore our Engineering Support resources
Production & Commercial Terms
Custom battery projects are evaluated based on technical complexity and commercial scope rather than fixed quantity thresholds.
There is no fixed MOQ for custom solutions; order quantities are determined based on project requirements and production feasibility.
Prototype samples are typically provided on a paid basis to ensure proper engineering validation and resource allocation.
For production programs, Tefoo focuses on long-term supply stability, supporting OEM product lifecycles and minimizing the risk of unexpected design changes or supply disruptions.
Start Your Custom Battery Project
If your equipment requires specific power, communication, or integration capabilities, it is recommended to evaluate battery solutions early in the development phase.
Submit your project details, and our engineering team will help determine whether a standard battery or a custom solution is the best fit for your application.
👉 Submit your project requirements to get a custom battery solution