Custom Products

Custom Battery Management Systems (BMS)

Custom LiFePO4 Battery Management Systems (BMS)

Custom LiFePO4 BMS Solutions: Safe, Stable, Long-Life Battery Intelligence


We specialize in designing and manufacturing custom Battery Management Systems (BMS) for Lithium Iron Phosphate (LiFePO4) batteries. Unlike generic suppliers, we engineer protection and control specifically for LiFePO4’s flat voltage curve, thermal stability, and long-cycle demands — serving industrial equipment, solar storage, marine systems, and heavy-duty EVs.


Why LiFePO4 Deserves a Dedicated BMS


LiFePO4 offers superior safety and cycle life, but its performance depends entirely on precise management. Without a chemistry-aware BMS, you risk:


  • Capacity Underutilization due to poor SOC estimation from flat OCV-SOC characteristics.


  • Premature Aging from voltage drift in long series strings.


  • False Fault Triggers if thresholds aren’t tuned to LiFePO4’s narrow operating window.


Our BMS designs respect LiFePO4’s nature: optimize algorithms for 3.2 V nominal, tighter voltage monitoring, and temperature-compensated balancing — so your battery delivers 2000+ cycles reliably.

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Key Technical Capabilities at a Glance


Parameter

Typical Range

Notes

Supported Chemistry

LiFePO4 (LFP)

Optimized for flat plateau & high cycle life

Voltage Coverage

12–48 V Low-Voltage · 72–600 V High-Voltage

Scalable slave boards for large packs

Cell Channels

4S to 24S per board (expandable)

Distributed architecture for >24S

Voltage Accuracy

±2 mV per channel (typical)

Ensures precise SOC & balancing

Balancing Current

Passive: 100–200 mA · Active: up to 2 A

Active preferred for long strings / high mismatch

Temperature Sensors

2–8 NTCs per module

Optional PT1000 for harsh environments

Communication

CAN 2.0 / CAN FD, RS485, UART, isolated SPI

Marine: NMEA 2000/CAN integration supported

Operating Temp

−40°C to +85°C

Industrial/Marine grade components

Certifications Supported

UL 1973, IEC 62619, UN38.3, ISO 16315 (Marine)

Roadmap aligned during design phase



Featured Application: Marine-Grade LiFePO4 BMS


Marine environments demand vibration resistance, moisture protection, and salt-air immunity — areas where LiFePO4 + custom BMS shines.

Use Case: Electric Auxiliary & Hybrid Propulsion

We developed a 48 V/300 Ah LiFePO4 BMS for a coastal workboat, featuring:

  • IP67 Enclosure Rating with sealed connectors and corrosion-resistant PCB finish.


  • Shock & Vibe Robustness: mounting and traces validated per IEC 60068-2-6/64.


  • NMEA 2000/CAN Integration: relay SOC, SOH, and alarms to helm display.


  • Salt-Mist Tolerance: conformal coating + stainless hardware at external interfaces.


Critical Marine Enhancements

  • Galvanic Isolation: HV systems include reinforced isolation monitoring to prevent stray current corrosion.


  • Load-Dump & Surge Immunity: protect against generator/alternator transients.


  • Redundant Sensing: dual NTCs on critical cells; current shunt + Hall-effect cross-validation.


Owners report 30% weight reduction vs. lead-acid, faster recharge from shore power/generator, and sustained cranking power even at partial SOC.


Other Real-World Applications


Solar + Storage Energy Systems

For residential/commercial LiFePO4 racks: smooth inverter handshake, cycle-count tracking, remote diagnostics via Modbus/CAN. One 51.2 V 16S project retained >80% capacity after 1500 cycles.

Electric Golf & Utility Vehicles

72 V LiFePO4 BMS with IP65 rating, shock-resistant mounting, regenerative braking tolerance. Configurable DOD limits prevent deep discharge in daily fleet use.

Industrial Backup & Off-Grid

Telecom base stations and remote sites: self-diagnostics, cold-start assist, lead-acid replacement compatibility.


Our Engineering Process: Made for LiFePO4, Built for You


We follow a collaborative workflow:

  1. Requirement Mapping: voltage, peak/average current, environment (marine = salt/moisture/vibe).


  2. Topology Selection: centralized vs. distributed, HVIL, connector strategy.


  3. Design & Validation: schematic→layout→firmware in-house; EIS simulation, thermal cycling, EMC pre-compliance.


  4. Certification Support: align with UL 1973, IEC 62619, UN38.3, and ISO 16315 (marine).


End-to-end control avoids mismatched subsystems and cuts time-to-market by 30–40%.


Reliability Features for Harsh Environments


  • Wide-temp components: −40°C to +85°C operational.


  • Conformal coating standard for marine/humid installations.


  • Graceful degradation: non-critical faults trigger warnings, not shutdowns.


Whether you need 10-year service life, fast recharge (<1 hour), or compact packaging, we tune the BMS to match — no compromise on safety.


Partner With LiFePO4 BMS Specialists


Moving to LiFePO4 for safety/longevity? Pair it with a BMS engineered for exactly that. Share your pack specs (voltage, capacity, current, environment), and we’ll provide:

  • Architecture diagram + key spec summary (balancing, comms, protection)


  • Prototype timeline and pilot pricing


Let’s build a LiFePO4 system that performs safely — on land or at sea.


Contact Us

Contact: Jeff Lueng

Phone: +86 18588491562

Email: info@hch-battery.com

Add: Room 311, Rongchang Industrial Park, No. 3 Hebin North Road, Huaguoshan Village, Songang Street, Baoan District,Shenzhen,Guangdong, China