High Energy Density Lithium Battery

Fander high energy lithium battery packs are designed for compact devices, IoT systems, portable electronics, and applications requiring high energy density and long runtime.

High energy density lithium battery pack for portable electronics

Technical Specifications

Core parameters for a single high-energy cell

VOLTAGE
3.7 / 3.8 / 3.85V
per cell
🔋
CAPACITY
10mAh – 160Ah
fully customizable
📈
MAX ENERGY DENSITY
420Wh/kg
industry-leading
UN38.3 CE RoHS UL1642 IEC62133
Customization Supported ✓

Typical Applications

Portable Devices

High Volumetric Energy Density Fast Charging Capability

Delivers all-day battery life in slim smartphones, wearables, and laptops — maximizing runtime without increasing device thickness.

Consumer electronics battery illustration

Medical Wearables

Compact High Capacity Long Life UL Certified

Designed for tight spaces — powers hearing aids, smart watches, and portable monitors for 24/7 operation.

Medical device battery

IoT & Smart Home

Ultra-Low Self-Discharge 5+ Year Life

Ensures autonomous operation in remote areas — drastically reduces maintenance and replacement costs.

IoT sensor battery

Frequently Asked Questions

What is the maximum energy density you can achieve? +

Our cells reach up to 420Wh/kg.

Can you design a battery that fits my existing device cavity? +

Yes. Send us your drawing or required dimensions/capacity/voltage/current, our engineers will propose the best solutions.

What is your MOQ for custom high energy batteries? +

Prototype MOQ as low as 1 unit. Mass production MOQ negotiable based on cell type and pack complexity.

How long does the custom design process take? +

Typically 24 hours for solution and quotation, then 2-4 weeks for prototype samples. Mass production lead time is 25-35 days after approval.

Get a Custom Quote

Start your project with a free technical consultation.

We'll reply within 24h. No spam.

Scroll to Top