Stable, safe, and long-life power for bridge, tunnel, building, and industrial equipment sensors.
As smart infrastructure and IoT monitoring become critical to urban safety, vibration and tilt sensors are widely deployed in bridges, tunnels, buildings, and industrial equipment. These sensors detect subtle structural movements and send alerts through wireless networks such as LoRa, NB-IoT, or 4G. However, powering these sensors reliably for years under harsh outdoor conditions remains a major engineering challenge — this is where advanced lithium battery technology plays a vital role.
Market Trend & Technical Requirements
- Long operating life (3–10 years) with minimal maintenance
- Wide temperature tolerance (−40 °C to +70 °C)
- Stable power delivery for communication bursts (instant currents >2 A)
- Compact size, IP67/IP68 waterproof design, and high safety
Because these sensors are often installed in inaccessible locations, battery replacement is costly. Therefore, energy density, safety, and reliability are top priorities in the battery design.
Typical Battery Configurations
PKNERGY offers custom LiFePO4 and NMC battery packs optimized for vibration and tilt monitoring systems:
- LiFePO4 (3.2 V or 6.4 V) — 32700 / 21700 cells, 3–20 Ah; >2000 cycles, excellent thermal stability.
- NMC (3.6 V or 7.4 V) — compact 18650 / 21700 cells for space-constrained designs; high energy density.
Each pack can integrate smart BMS (CAN/RS485/UART), temperature monitoring, and over-current protection.
Performance Comparison & Engineering Insight
| Feature | LiFePO4 | NMC |
|---|---|---|
| Nominal Voltage | 3.2 V | 3.6 V |
| Energy Density | ⭐⭐☆ (Moderate) | ⭐⭐⭐⭐ (High) |
| Cycle Life | ⭐⭐⭐⭐⭐ (2000–4000 cycles) | ⭐⭐⭐ (800–1200 cycles) |
| Safety & Thermal Stability | ⭐⭐⭐⭐⭐ | ⭐⭐⭐☆ |
| Peak Discharge | Excellent | Excellent |
| Best Use | Outdoor fixed sensors, long lifespan | Compact/high-data sensors |
Insight: Choose LiFePO4 for long-life, high-safety field deployments; choose NMC when tighter space and higher energy per volume are critical.
PKNERGY Custom Battery Solutions
- Custom voltage & capacity (1S–4S, 3–20 Ah)
- Integrated smart BMS (CAN / RS485 / UART)
- IP67/IP68 housings, low-temperature optimization
- Certifications: UN38.3, IEC62133, CE, UL
Our engineering team supports complete integration — cell selection, BMS tuning, connectors, enclosure, and certification assistance.
Contact Miah— PKNERGY
For structural health monitoring (SHM) and IoT battery projects.
Email: sale@pknergy.com | Website: pknergy.com
