1. Introduction

As the gas metering industry transitions toward smart IoT-based systems, reliable and long-life power solutions have become mission-critical. OEMs of portable or fixed gas flow meters are increasingly adopting custom lithium battery packs to achieve multi-year life, accurate measurement, and stable data transmission. This article explores how PKNERGY supports the new generation of intelligent metering devices.

2. Why Lithium Battery for Smart Meters

Gas flow meters are often installed in remote, unpowered locations where traditional alkaline or NiMH batteries cannot sustain years of continuous operation or frequent communication cycles.

Lithium-ion and Li-SOCl₂ solutions offer:

• High energy density — up to 3× higher than NiMH
• Long cycle life — 2,000+ cycles for Li-ion, 10+ years shelf life for Li-SOCl₂
• Stable voltage for precise sensor and MCU performance
• Compact size allowing slim, tamper-proof enclosures

3. Key Design Requirements

• Voltage Options: 3.6V (single) / 7.2V (2S) / multi-series packs
• Capacity Range: 2Ah – 20Ah depending on transmission frequency
• Low-Temperature Performance: Down to –40°C for outdoor installations
• Certifications: UN38.3, IEC62133, CE, CB for international compliance
• Communication: Optional smart BMS with RS485 / CAN / UART for IoT data sync

4. Application Example

Client: European industrial flow meter OEM

Solution: 3.6V 13Ah Li-ion battery with custom BMS and smart connector interface

Result: Extended lifetime from 18 months to 4+ years and reduced maintenance cost by 60%.

5. Why PKNERGY

• In-house pack engineering and cell testing
• Industrial-grade BMS and firmware design
• Complete certification package (UN38.3 + IEC62133)
• Flexible DDP / FOB / CIF global logistics
• Fast prototyping and OEM/ODM project support

6. FAQ