Explore our highly certified, custom-engineered Lithium Iron Phosphate (LiFePO4) battery packs, cells, and charging systems built to international safety standards.
A Globally Recognized Pioneer in Safe, High-Cycle LiFePO4 Battery Systems Since 2009
Founded in 2009, Hangzhou LIAO Technology Co., Ltd. is a professional and leading manufacturer specialized in Lithium Iron Phosphate (LiFePO4) batteries. Over the course of more than 15 years, our high-quality custom design power systems and standard battery packs have been successfully exported to more than 20 countries and regions worldwide, building a stellar reputation for durability, thermal performance, and absolute safety.
We operate within a comprehensive, high-tier quality control architecture designed to align with strict Western regulatory metrics. We have established a strict and efficient QC system. All of our products are produced strictly under the quality management system of ISO 9001. Meanwhile, we have passed and always keep compliance to the environmental management system ISO 14001 as well as the occupational health and safety management system ISO 18001 (ISO 45001).
Understanding transient current demands, voltage sag mitigation, and equivalent series resistance (ESR) in high-SPL environments.
Modern mobile electronics and competition-grade car audio systems have evolved beyond the electrical capacity of standard lead-acid and Absorbent Glass Mat (AGM) battery structures. High-power monoblock amplifiers running Class D topography draw massive instantaneous currents (transient currents reaching upwards of 500A to 1000A in milliseconds) to replicate deep sub-bass frequencies. When drawing high currents from an AGM battery, the chemistry suffers from severe voltage sag, often dropping system voltage from 14.4V down to 11.5V or lower. This degradation directly reduces the amplifier's maximum watt output, induces thermal stress, causes clipping, and damages sensitive voice coils.
Custom-engineered LiFePO4 (Lithium Iron Phosphate) and LTO (Lithium Titanate) cells manufactured at the Hangzhou LIAO Technology facility offer the ideal industrial solution. By utilizing cells with ultra-low internal resistance (ESR) and high electrochemical discharge coefficients (C-rates), car audio installers and distributors can achieve stable voltage regulation under high-stress SPL (Sound Pressure Level) conditions. The discharge profile of our LiFePO4 cells ensures that the system maintains a nominal voltage of 13.2V to 13.8V, allowing car amplifiers to perform at maximum efficiency and peak output power without risking alternator fatigue or system failure.
LIAO's advanced cell tab designs and prismatic battery topologies minimize Equivalent Series Resistance (ESR), allowing rapid charge acceptance and instantaneous peak-current delivery without dangerous heat generation.
Maintains stable terminal voltage throughout 90% of the discharge cycle, eliminating the progressive voltage sag typical of lead-acid batteries, protecting car audio amplifiers from clipping.
Our LiFePO4 crystal structure is exceptionally stable under high pressure. Even under direct mechanical puncture, our cells do not burn or explode, making them safe for automotive cabin installations.
A deep dive into next-generation battery architectures, active balancing BMS systems, and high-voltage charging profiles.
The car audio competition landscape is shifting away from traditional 12V automotive charging systems toward dedicated 14.8V and 16.0V nominal systems. Competitors leverage this shift to squeeze up to 40% more output wattage from their amplifiers. Our custom battery packs can be built in various configurations, including 4S (12.8V nominal), 5S (16V nominal), or custom configurations that align with multi-alternator systems outputting up to 18V.
Traditional passive balancing in standard BMS designs is slow and dissipates excess energy as heat. LIAO's developmental roadmap includes active balancing BMS chips capable of transferring charge from high-voltage cells to low-voltage cells at rates up to 5A. This real-time balancing preserves cell health during high-dynamic current draws and short charging windows from high-output alternators.
| Parameters | Traditional AGM Battery | LIAO LiFePO4 Technology |
|---|---|---|
| Energy Density | 30 - 40 Wh/kg | 120 - 160 Wh/kg |
| Cycle Life (100% DOD) | 300 - 500 Cycles | 2800+ Cycles (1C) |
| Voltage Sag (at 5C draw) | Drops below 11.0V within seconds | Maintains >12.8V under continuous load |
| Weight Comparison | Heavy (approx. 32kg for 100Ah) | Lightweight (approx. 11kg for 100Ah) |
| Charge Speed (C-Rate) | 0.1C - 0.2C (Slow Charge) | 0.5C - 1C (Rapid Charge) |
Supporting international B2B distributors, custom car audio system builders, and large-scale industrial buyers.
Global wholesalers, automotive distribution chains, and specialized car audio system houses face specific purchasing requirements. They need robust mechanical casings, reliable quality control certificates, and custom designs that match specific vehicle battery trays (e.g., Group 31, Group 34, Group 24, Group 48, etc.). Hangzhou LIAO Technology Co., Ltd. addresses these demands with customized battery packs, providing comprehensive support throughout the design process.
Custom Busbar & Terminal Engineering: Car audio installations require heavy-duty copper busbars and multiple output terminals (e.g., quad 1/0 AWG inputs) to minimize resistance. Our engineering department develops custom top-cover plates and solid copper internal connection links tailored for high vibration environments.
Flexible Enclosure Systems: We manufacture systems in metallic casings, heavy-duty ABS shells, and customized hot shrink films, catering to both trunk-space car audio installations and extreme under-hood heat scenarios. Our batteries operate reliably across a broad temperature range of -40°C to 85°C.
Strategic Worldwide Support: LIAO's export channels serve major global markets, providing reliable logistics support to countries like Germany, France, Netherlands, Spain, the United Kingdom, USA, Canada, Mexico, Brazil, Australia, Korea, Japan, India, and South Africa.
A step-by-step look at our automated production line, precision welding, and testing systems.
Beyond high-performance car audio batteries, our engineering teams build standard and custom power packs for heavy industrial applications.
Our new generation LiFePO4 golf cart batteries deliver consistent power over rolling terrains and steep courses, matching standard cart tray dimensions.
LIAO LiFePO4 batteries run caravan movers quietly without gas emissions. Heavy weight is minimized, optimizing fuel efficiency and payload.
Heavy load transporters and warehouse tuggers run longer shifts with fast opportunity charging, lowering downtime and labor costs.
Environmentally clean power for marine vessels, ensuring no fuel spill contamination and low acoustic signatures in fragile environments.
Maintaining strict adherence to ISO, CE, Patent, and Safety performance certifications.
ISO Quality Management
ISO Environmental System
ISO Occupational Health
Complies with international manufacturing standards.
Patent Certificate 1
Patent Certificate 2
Patent Certificate 3
Patent Certificate 4
Patent Certificate 5
Patent Certificate 6
Honorary Award Certificate
Honored Enterprise Label
CE Certification
Safety Test Report
MSDS Compliance
SGS Quality Verification
Quality Compliance Certificate
Environmental Safety Certification
International Quality Seal
Transport Safety Report
A professional design framework delivering safety, longevity, and structural customization.
LIAO offers extensive experience in the engineering, design, and assembly of custom battery packs. We support over 500 business customers globally, providing tailormade solutions that perform reliably in demanding environments.
Technical guidance for engineers, global procurement managers, and specialized audio distributors.
Explore our high-capacity deep-cycle batteries, solar panels, and specialized transport battery systems.
Liao Battery