Portable & Handheld Devices
Global Manufacturing
Facilities in China, Malaysia, Vietnam, and the USA
US-Based Support
Local representatives and engineering support across the country
Trusted Quality
Certified to global standards and built for performance
Portable & Handheld Device Battery Solutions
Compact, Reliable & Scalable
Portable and handheld electronic devices demand battery systems that are compact, lightweight, reliable, and capable of delivering long runtimes in limited space.
At PHD Energy, we design and manufacture custom rechargeable battery packs for a wide range of portable electronic applications — from industrial handheld systems and portable medical devices to consumer electronics, smart monitoring equipment, and mobile communication products.
Our engineering team works closely with OEMs to select the ideal battery chemistry, pack configuration, and protection system based on the performance, safety, lifecycle, and environmental requirements of each device.
Industrial & Consumer Ready
Battery solutions for rugged handheld systems and portable electronics
Engineering Expertise
50+ years of lithium battery design experience
OEM Customization
Battery solutions optimized for portable and handheld device integration
Scalable Production
Prototype through mass production
Reliable Supply Chain
Global manufacturing with US support
Advanced Battery Technology
High-performance li-ion (NMC), LiFePO4, LTO & Na-ion chemistries with smart BMS
Flexible Battery Solutions & Form Factors
PHD Energy’s flexible manufacturing capabilities enable custom battery solutions in a wide variety of shapes and formats to support diverse portable electronic applications, including:
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Coin cell batteries
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Ultra-thin batteries
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Cylindrical cells
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Pouch cells
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Rigid Li-ion batteries
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Multi-cell battery packs
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Custom-shaped battery configurations
We provide a full range of battery solutions ranging from non-rechargeable primary batteries to advanced rechargeable lithium battery systems.
Form factor plays a critical role in portable and handheld device design. The shape, size, and configuration of the battery solution directly impact device dimensions, weight, runtime, and overall user experience.
Our engineering team works closely with OEMs to optimize battery size, chemistry, performance, and packaging for each application’s unique requirements.
Custom Portable Battery Pack Solutions
With manufacturing operations in China, Vietnam, Malaysia, and the USA, plus local US engineering support, PHD Energy delivers scalable battery solutions from prototype to production.
PHD Energy provides complete custom battery pack engineering and manufacturing services for portable and handheld electronic products, including:
Custom battery pack design
Smart BMS integration
PCM & protection circuits
Rapid prototyping
Low-temperature battery solutions
Connector & cable integration
Plastic enclosure integration
UL / IEC certification support
Premium Battery Chemistry
PHD Energy picks the best suitable chemistry for your devices for quality, longevity and safety.
Li-ion (NMC)
High energy density for compact, lightweight designs. Ideal for frequent-cycle applications with space constraints.
- Higher voltage and energy density
- Wide-temperature cell options available
- Superior volumetric efficiency
- Optimized for moderate climates
- Cost-effective at scale
LiFePO4 (LFP)
Exceptional thermal stability and cycle life. Purpose-built for harsh outdoor conditions and long service intervals.
- 2,000+ cycle life capability
- Inherently stable chemistry
- Preferred for DOT and municipal use
Lithium Titanium Oxide (LTO)
Exceptional cycle life and ultra-fast charge capability. Ideal for extreme cold environments and high-frequency charge/discharge applications.
- 10,000+ cycle life capability
- Excellent low-temperature performance (-40°C)
- Ultra-fast charge and discharge rates
Sodium-Ion (Na-ion)
Emerging chemistry offering cost-effective, cobalt-free energy storage. Well-suited for large-format, cost-sensitive outdoor deployments.
- No lithium or cobalt dependency
- Wide operating temperature range
- Strong potential for cost reduction at scale
Which Battery Chemistry Is Best?
Each chemistry offers a different balance of energy density, lifespan, safety, power capability, and cost.
| Chemistry | Best For |
|---|---|
|
Li-ion (NMC/NCA) |
Compact portable devices requiring maximum energy density and lightweight design. |
|
LiFePO4 (LFP) |
A well-balanced solution offering excellent safety, reliability, and long service life. |
|
Lithium Polymer |
The premium solution for extreme durability, rapid charging, and harsh operating environments. |
|
Sodium-ion |
An emerging and cost-effective battery technology offering improved safety, stable performance, and reduced dependence on lithium and critical raw materials. Sodium-ion batteries are well suited for portable applications prioritizing affordability, sustainability, and reliable everyday performance over maximum energy density. |
At PHD Energy, we help OEMs and engineers identify the right battery solution for each project — including cell selection, custom battery pack design, BMS integration, and certification support.
Applications We Power
PHD Energy designs custom rechargeable battery solutions for a wide range of portable and handheld electronic applications requiring compact size, reliable performance, lightweight design, and long operating runtime.
Handheld industrial devices
Portable medical electronics
Consumer electronics
Barcode scanners & POS systems
GPS & tracking devices
Smart IoT devices
Submit your RFQ
What Happens Next
Submit your requirements and a PHD Energy engineer will contact you within 1 business day.
Share application, specs, volume, and timeline.
Our team evaluates your needs and prepares a tailored recommendation.
Get a detailed proposal including design options, pricing, and lead times.
We build, test, and refine until your solution is field-ready.