Why Load Testing Matters
Primary lithium manganese batteries often keep stable voltage for much of their service life, then drop quickly near end of life. This means a simple voltage reading may look acceptable, while the battery may still fail under load.
| Test Item | Purpose |
|---|---|
| Open Circuit Voltage | Basic condition check |
| Load Voltage | Real working performance |
| Internal Resistance | Cell consistency evaluation |
| Pulse Current Test | Checks short power demand |
| Temperature Test | Reviews application stability |
Safe Testing Method
A load test should use a suitable test fixture, correct resistance load, and controlled testing environment. The load should match the device’s actual current demand. Do not short-circuit, overheat, puncture, recharge, or force-discharge primary lithium batteries. IEC 60086 covers safety requirements for primary batteries, while lithium battery transport commonly requires UN38.3 test information and MSDS.
Manufacturer Vs Trader
A trader may provide battery models, but may not control capacity grading, internal resistance, leakage inspection, pulse discharge performance, or batch traceability. A direct manufacturer can manage cell production, testing, pack assembly, labeling, packing, and export documents more effectively.
OEM ODM And Quality Control
Hongli focuses on primary lithium manganese batteries, including CR123A, CR2, CR14250, CR14505, CR17450, CR17505, CRP2, 2CR5, CRV3, CR9V, button cells, and customized lithium battery packs.
For OEM / ODM projects, buyers should confirm voltage, capacity, pulse current, continuous current, operating temperature, connector, wire length, label content, packing method, and load test requirement. Hongli checks open circuit voltage, capacity, internal resistance, leakage, appearance, polarity, insulation, temperature performance, packing accuracy, and batch records.
Load testing should reflect the final device environment. Hongli can support stable lithium battery production, customized battery packs, and export-ready documentation for industrial power applications.