1. Introduction

Water-quality analyzers are essential for laboratories, wastewater treatment plants, and field-based environmental monitoring. As demand grows for more portable and precise instruments, OEMs are moving from NiMH and alkaline batteries to custom lithium battery packs that ensure longer operation, better stability, and consistent accuracy.

2. Why Lithium Battery for Water Analyzers

Field engineers often require analyzers to operate continuously during sampling or calibration. Compared with conventional battery types, lithium-ion batteries offer significant advantages:

• Stable voltage output for accurate pH, TDS, DO, and conductivity readings
• Lightweight and rechargeable for easy field handling
• Wide temperature tolerance for indoor and outdoor environments
• High cycle life and consistent performance even in humid conditions

3. Key Customization Requirements

• Voltage & Capacity: 3.7V / 7.4V (2S) from 2000mAh–10000mAh
• Safety & Certification: UN38.3 + IEC62133 for international shipment compliance
• Enclosure & Waterproofing: Optional IP65–IP67 protection for field use
• Smart Protection: Built-in BMS with temperature cutoff and USB-C charging support
• Longevity: 800–1000 charge cycles for multi-year device lifetime

4. Use-Case Example

Client: European laboratory instrument manufacturer

Previous Design: 3.6V 3000mAh NiMH pack — insufficient runtime and poor humidity tolerance

PKNERGY Solution: 7.4V 6000mAh Li-ion pack with smart BMS and waterproof connector

Results:

• Operation time extended from 6 hours to over 12 hours per charge
• Reduced maintenance frequency by 50%
• Improved reliability in field and lab environments

5. How PKNERGY Can Help

PKNERGY specializes in developing and manufacturing customized lithium battery solutions for scientific and industrial measurement instruments, including water analyzers, pH meters, and dissolved oxygen sensors.

• OEM/ODM design with advanced BMS integration
• UN38.3 and IEC62133 certification assistance
• Connector and waterproof housing customization
• Global DDP / FOB / CIF shipping and compliance documentation

Partnering with PKNERGY ensures your products achieve international compliance and stable energy performance in every condition.

6. FAQ