Check Voltage And Load Performance
Open circuit voltage can show basic battery condition, but it is not always enough. Primary lithium manganese batteries often keep a stable voltage for much of their discharge life, then drop quickly near the end. A load test gives a more practical result because it shows whether the battery can still power the device under real working current.
| Test Item | What It Helps Confirm |
|---|---|
| Open Circuit Voltage | Basic remaining condition |
| Load Voltage | Real working ability |
| Internal Resistance | Aging or performance drop |
| Appearance | Leakage, rust, swelling, damage |
| Device Runtime | Practical replacement timing |
Confirm Battery Chemistry First
Hongli focuses on primary lithium manganese batteries, including CR123A, CR2, CR14250, CR14505, CR17450, CR17505, CRP2, 2CR5, CRV3, CR9V, 3V button cells, and customized lithium battery packs. These batteries are not rechargeable. When depleted, they should be replaced instead of charged or repaired.
Manufacturer Vs Trader
A trader may offer different battery models, but often cannot control cell consistency, capacity grading, internal resistance, leakage inspection, pack assembly, or batch traceability. A direct manufacturer can manage cell production, testing, labeling, packaging, and export documents more effectively.
OEM ODM And Quality Control
For OEM / ODM projects, buyers should confirm voltage, capacity, pulse current, continuous current, operating temperature, connector, wire length, label, packing method, and replacement standard. Hongli checks open circuit voltage, capacity, internal resistance, leakage, appearance, polarity, insulation, temperature performance, packing accuracy, and batch records.
When Replacement Is Safer
A lithium battery should be replaced when load voltage collapses, runtime is unstable, the device gives low-battery alarms, or the battery shows any visible damage. Bulk orders should also confirm MSDS, UN38.3 test information, carton marks, storage requirements, and export documents.