Phonix (Fangxin)Technology is a professional designer and manufacturer of smart battery chargers and Battery Management Systems (BMS), serving the United States market across energy storage, industrial power equipment, smart mobility, power tools, consumer electronics, and AI-powered systems.
Custom Battery Charger Manufacturer for US OEMs
OEM & ODM Battery Charging Solutions for Industrial, Medical, and Commercial Equipment
Phonix Technology is a China-based custom battery charger manufacturer providing OEM and ODM charging solutions for equipment manufacturers and industrial customers in the United States.
With experience supporting projects associated with major American industrial and medical equipment companies, including ITT’s former water equipment business and GE HealthCare, Phonix understands the importance of equipment compatibility, product reliability, technical specifications, and manufacturing consistency.
Our battery charging solutions cover lithium-ion, LiFePO4, lead-acid, AGM, and NiMH battery systems, with customization options for charging voltage, output current, connectors, mechanical configurations, and intelligent charging functions.
We support US equipment manufacturers seeking practical charging solutions for industrial equipment, medical technology, backup power systems, battery-powered devices, and specialized OEM applications.
1. OEM Battery Charger Experience with US Industrial and Medical Equipment Companies
Choosing a battery charger manufacturer involves more than comparing voltage, current, and price.
For American OEM customers, the charging system must integrate with the equipment’s electrical architecture, battery configuration, mechanical design, and production requirements.
Phonix’s historical project experience includes applications associated with two established American industrial sectors.
Case Study 1: Industrial Pump Equipment — ITT / Xylem Heritage
Phonix has previously supplied supporting products for industrial pump equipment associated with ITT’s former water-related business.
ITT Corporation’s water equipment and services businesses were separated into Xylem Inc. in 2011. Xylem subsequently developed as an independent global water technology company.
This historical project experience provides a useful example of Phonix’s involvement in specialized industrial equipment applications.
Industrial pump systems may require supporting electrical equipment designed for demanding operating environments, including water infrastructure, industrial facilities, and specialized pumping applications.
Engineering considerations for industrial pump equipment include:
- Compatibility with the equipment’s electrical requirements.
- Stable output voltage and current.
- Appropriate connectors and cable configurations.
- Mechanical integration and installation space.
- Environmental protection where required.
- Long-term component availability and manufacturing consistency.
For battery-powered pump equipment and auxiliary battery systems, charger selection must also account for battery chemistry, charging profiles, operating temperature, and system protection requirements.
Phonix’s experience with industrial equipment projects helps inform its approach to application-specific power and charging solutions.
Project note: This refers to historical work associated with ITT’s former water-related business and does not imply a current supplier relationship with Xylem Inc.
Case Study 2: Medical Equipment Applications — GE HealthCare
Phonix has also supported equipment-related projects associated with GE HealthCare, a major American medical technology company.
Medical equipment applications place particular importance on electrical performance, reliability, product consistency, and technical documentation.
Depending on the equipment and intended use, power and battery charging systems may require additional safety evaluation and application-specific validation.
Important engineering considerations include:
- Stable and accurately controlled electrical output.
- Compatibility with the equipment’s power architecture.
- Electrical safety and insulation requirements.
- Thermal performance under defined operating conditions.
- Electromagnetic compatibility.
- Production testing and component consistency.
- Documentation and traceability where required.
For medical equipment manufacturers, selecting an OEM power or charging solution involves evaluating the complete system rather than relying solely on a standard product specification.
Phonix supports application-specific engineering discussions, product customization, sample evaluation, and manufacturing coordination.
Medical equipment compliance note: Product suitability and applicable medical electrical safety requirements must be evaluated for each application. Historical medical equipment project experience does not imply that all Phonix chargers are certified for medical use.
Case Study 3: Generator Starting Battery Chargers and Backup Power Equipment
Generator starting batteries represent another important application area for industrial battery charging systems.
Diesel and gas generators commonly rely on dedicated starting batteries that must remain ready for operation after extended standby periods.
For many generator installations, the battery charger is responsible for maintaining an appropriate state of charge while the generator remains on standby.
A typical engineering example involves a 12V or 24V lead-acid starting battery system.
Depending on battery specifications, a charger may require:
- Controlled charging voltage.
- Appropriate charging current.
- Float charging capability.
- Temperature compensation where applicable.
- Protection against electrical faults.
- Reliable operation during extended standby periods.
For example, a 12V lead-acid battery system may use a nominal float charging voltage around 13.5V–13.8V at a specified reference temperature, depending on the battery manufacturer’s requirements.
However, the correct charging voltage must always be determined from the actual battery specifications.
Phonix can evaluate customized charging requirements for generator manufacturers and industrial backup power equipment suppliers.
Explore our Generator Battery Charger Solutions for additional information about charging requirements for standby battery systems.
2. Custom Battery Chargers for US Industrial Equipment Manufacturers
American industrial equipment manufacturers frequently require charging solutions that differ from standard consumer battery chargers.
A charger designed for an industrial machine may need to satisfy specific requirements involving battery configuration, electrical interfaces, mounting space, environmental conditions, and production integration.
Phonix provides Custom Battery Charger Solutions for OEM projects requiring application-specific specifications.
Industrial Equipment and Automation
Industrial battery-powered equipment may include mobile machinery, automated equipment, inspection systems, and specialized electrical devices.
Key engineering considerations include charging voltage accuracy, thermal management, electrical protection, and compatibility with the equipment’s control system.
Robotics and Smart Equipment
Robotic equipment and intelligent battery-powered devices may require charging systems that coordinate with battery management electronics.
Depending on the application, charging functions may involve:
- Battery status monitoring.
- Charging current control.
- Temperature-based charging restrictions.
- Communication with a battery management system.
- Automatic charging termination.
- Equipment-specific charging interfaces.
Communication protocols such as CAN, UART, or RS485 may be considered when required by the system architecture.
Not every application requires digital communication. The appropriate solution depends on the battery system and equipment design.
Medical and Professional Equipment
Specialized medical and professional equipment may require compact charging solutions, controlled electrical performance, and application-specific validation.
For these projects, the electrical design, mechanical structure, documentation, and applicable safety requirements should be reviewed before selecting a charger.
Industrial Pumping and Water Equipment
Battery-powered pumping systems, monitoring devices, and auxiliary equipment may require charging solutions adapted to their installation and operating environments.
For outdoor or enclosed equipment, environmental protection and thermal performance must be evaluated together.
A high IP rating alone does not establish suitability for every industrial environment.
3. Battery Chemistry and Custom Charging Solutions
Different battery chemistries require different charging characteristics.
Selecting a charger based only on nominal battery voltage can lead to incorrect charging parameters.
Phonix supports the evaluation of charging solutions for several common battery technologies.
LiFePO4 Battery Chargers
Lithium iron phosphate batteries are used in industrial equipment, mobile devices, and various battery-powered systems.
A typical LiFePO4 cell has a nominal voltage of approximately 3.2V, while its charging voltage is commonly specified around 3.65V per cell.
For example:
| Battery Configuration | Nominal Voltage | Typical Maximum Charging Voltage |
|---|---|---|
| 4S LiFePO4 | 12.8V | 14.6V |
| 8S LiFePO4 | 25.6V | 29.2V |
| 12S LiFePO4 | 38.4V | 43.8V |
| 16S LiFePO4 | 51.2V | 58.4V |
These values are illustrative. Actual charging parameters must follow the battery manufacturer’s specifications.
Custom LiFePO4 charger projects may require specific charging current limits, temperature restrictions, connector configurations, or BMS compatibility.
Learn more about our LiFePO4 Battery Charger Solutions.
Lithium-Ion Battery Chargers
Lithium-ion battery packs are widely used in portable industrial equipment, professional tools, and electronic devices.
Common lithium-ion cells have a nominal voltage of approximately 3.6V–3.7V, with a typical maximum charging voltage of 4.2V per cell.
However, some lithium-ion chemistries use different voltage limits.
Phonix evaluates charger specifications according to the battery chemistry, cell configuration, and protection requirements.
Lead-Acid and AGM Battery Chargers
Lead-acid batteries remain important in generator starting systems, industrial backup equipment, and other standby power applications.
Depending on the battery type, charging may involve bulk, absorption, and float charging stages.
Flooded lead-acid, AGM, and gel batteries can have different charging requirements.
For OEM projects, charging voltage and temperature compensation should be matched to the selected battery.
NiMH Battery Chargers
Nickel-metal hydride batteries require charging control appropriate to their chemistry and pack configuration.
Charging termination may involve temperature monitoring, voltage behavior, timing, and other protection mechanisms.
Phonix can evaluate customized NiMH charging requirements for compatible OEM applications.
4. US Electrical Input Standards and Plug Configurations
Battery chargers intended for the United States must be designed for the electrical supply and installation conditions of their intended applications.
Standard US Electrical Supply
Common US electrical characteristics include:
| Parameter | Typical US Requirement |
|---|---|
| Residential supply | 120V AC |
| Frequency | 60Hz |
| Common plug types | Type A / Type B |
| Industrial equipment | Application-dependent supply voltage |
| Universal-input charger option | 100–240V AC, 50/60Hz |
Industrial and commercial installations may use additional supply configurations.
Phonix offers charger design options for different input voltage requirements, subject to the selected model.
Customized AC Plugs and DC Connectors
OEM charger projects may require:
- US Type A or Type B plug configurations.
- Customized AC input cables.
- DC barrel connectors.
- Locking DC connectors.
- Application-specific cable lengths.
- Customized output connectors.
- Equipment-specific mechanical configurations.
Connector selection should account for electrical ratings, mechanical reliability, polarity, and installation conditions.
5. US Battery Charger Safety and Compliance
Safety and regulatory compliance are important considerations when developing charging equipment for the United States.
Applicable requirements depend on the product category, electrical design, intended application, and installation conditions.
UL and ETL Safety Certification
Phonix has ETL-certified charger models within its approved certification scope.
Certification coverage must be confirmed for the exact model, electrical ratings, and product configuration.
An ETL certification for one charger model does not automatically extend to every customized product.
FCC Requirements
Applicable FCC requirements depend on the product’s electrical and electronic functions.
For example, chargers incorporating digital control electronics or communication functions may require evaluation under relevant electromagnetic emission requirements.
The appropriate compliance pathway should be determined for each product.
RoHS and Environmental Requirements
Material compliance documentation and environmental requirements can be reviewed according to customer specifications and the intended market.
Where relevant, additional requirements such as California Proposition 65 should be evaluated separately.
Medical Equipment Compliance
Medical equipment applications may be subject to additional requirements, including relevant standards from the IEC 60601 family.
Compliance with general charger safety standards does not automatically establish compliance with medical electrical equipment requirements.
Phonix recommends confirming the applicable standards during the early stages of OEM project development.
6. OEM and ODM Battery Charger Manufacturing Process
Phonix supports equipment manufacturers through a structured OEM and ODM development process.
Step 1: Technical Requirement Review
The project begins with an evaluation of the customer’s requirements, including:
- Battery chemistry.
- Battery pack configuration.
- Charging voltage and current.
- AC input requirements.
- Connector specifications.
- Mechanical dimensions.
- Environmental conditions.
- Safety and regulatory requirements.
- Expected production quantities.
Step 2: Charger Configuration and Engineering Evaluation
Based on the technical requirements, Phonix evaluates whether an existing charger platform can be customized or whether additional development is required.
Engineering considerations may include electrical performance, thermal management, control functions, and manufacturing feasibility.
Step 3: Sample Development and Testing
Samples are evaluated against the agreed technical requirements.
Depending on the project, testing may include electrical performance, charging behavior, protection functions, temperature rise, and other relevant verification activities.
Step 4: Manufacturing and Quality Control
After sample approval and production preparation, manufacturing activities are organized according to the agreed specifications.
Production quality control may include incoming material inspection, process inspection, electrical testing, and final product inspection.
Step 5: OEM Production and Delivery
Phonix coordinates production and export arrangements for international OEM customers.
Product labeling, packaging, documentation, and delivery requirements can be reviewed during project planning.
For additional information, explore our OEM Battery Charger Manufacturing Services.
7. Battery Charger Solutions for International OEM Markets
Many US equipment manufacturers develop products for more than one geographic market.
Although charger platforms may share similar electrical designs, requirements can differ according to the destination market, equipment application, and applicable regulations.
Phonix supports international OEM projects by reviewing electrical specifications, connector requirements, product documentation, and relevant compliance considerations.
United States and Canada
US and Canadian industrial equipment manufacturers may share similar engineering requirements, but applicable product approvals and installation conditions must be evaluated separately.
For outdoor equipment, environmental conditions and battery temperature limits may influence charger selection.
Explore our Custom Battery Charger Solutions for Canada.
United States and Germany
German industrial equipment manufacturers frequently require detailed technical specifications, equipment integration documentation, and application-specific verification.
US manufacturers developing equipment for European industrial applications may also need to evaluate additional electrical safety and EMC requirements.
Learn more about our Industrial Battery Charger Solutions for Germany.
United States and Australia
Industrial and outdoor equipment applications in Australia may involve additional environmental considerations, including temperature, moisture, and installation conditions.
Product suitability and applicable Australian regulatory requirements should be reviewed for each project.
Explore our Custom Battery Charger Solutions for Australia.
United States and the United Kingdom
Equipment manufacturers supplying both US and UK markets may require different plug configurations, documentation, and regulatory assessments.
Phonix can evaluate project-specific charger configurations for international equipment programs.
Learn more about our OEM Battery Charger Solutions for the United Kingdom.
8. Importing Custom Battery Chargers from China to the United States
US equipment manufacturers sourcing battery chargers from China should consider technical requirements, product classification, compliance documentation, and shipping arrangements.
Import duties and customs requirements depend on the product classification, country of origin, and regulations applicable at the time of importation.
Phonix can coordinate commercial documentation and shipping arrangements according to the agreed order terms.
Customers should confirm current import requirements and applicable duties with their customs broker or qualified trade adviser.
9. Frequently Asked Questions
Can Phonix manufacture custom battery chargers for US OEM companies?
Yes. Phonix provides OEM and ODM battery charger manufacturing services for US equipment manufacturers. Customization options may include charging voltage, output current, battery compatibility, connectors, and mechanical configurations.
Does Phonix have experience with American industrial companies?
Yes. Phonix has historical project experience associated with ITT’s former water equipment business and GE HealthCare-related equipment applications. The specific products and historical supply arrangements should be considered separately from any current customer relationships.
Can Phonix develop battery chargers for industrial pump equipment?
Phonix can evaluate custom charging requirements for battery-powered industrial pump equipment and related auxiliary systems. Charger specifications depend on the battery configuration, operating environment, and equipment design.
Can Phonix supply battery chargers for medical equipment?
Phonix can evaluate power and charging requirements for medical equipment projects. Applicable medical safety standards, regulatory requirements, and product validation must be confirmed for each application.
Does Phonix offer ETL-certified battery chargers?
Yes. ETL-certified charger models are available within Phonix’s approved certification scope. Certification status and coverage must be verified for the exact model and configuration.
Can Phonix customize chargers for LiFePO4 and lead-acid batteries?
Yes. Phonix supports customized charging solutions for LiFePO4, lithium-ion, lead-acid, AGM, and other compatible battery technologies, subject to technical evaluation.
10. Request a Custom Battery Charger for Your US OEM Project
Whether you are developing industrial equipment, battery-powered devices, medical technology, or specialized machinery, selecting the right charging solution is an important part of product development.
Phonix Technology supports OEM customers seeking customized battery chargers and practical manufacturing solutions.
To discuss your project, please provide:
- Battery chemistry and nominal voltage.
- Required charging voltage and current.
- Battery capacity.
- Input voltage and plug requirements.
- Connector and cable specifications.
- Expected annual production quantity.
- Applicable certification requirements.
Our team can review your specifications and discuss suitable OEM or ODM options.
Contact Phonix:
Email: [email protected]
WhatsApp(WhatsApp): +86 135 3039 5151
Tel: +86 191 2426 9133
Manufacturing Location:
201 Building, No. 14 Daxing 1st Road, Buyong, Shajing, Bao’an, Shenzhen, China 518105
Phonix Technology — Custom Battery Charger Manufacturer | OEM & ODM Charging Solutions