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Lithium Battery Procurement – Technical Specification Checklist

Lithium Battery Procurement – Technical Specification Checklist

June 5, 2026

Latest company news about Lithium Battery Procurement – Technical Specification Checklist

Lithium battery selection directly impacts product safety, runtime, environmental adaptability, and service life. This document lists the technical specifications that must be verified when procuring or customizing lithium batteries, applicable to both single cells and battery packs (including protection circuit modules).

Chalong Fly recommends integrating this checklist into your supplier evaluation process.


1. Core Electrical Performance Specifications
Parameter Description Verification Item
Nominal Voltage Cell platform voltage (e.g., 3.2V LiFePO₄, 3.6V/3.7V NMC/LCO) □ Matches device voltage range
Capacity Typical / Minimum capacity (mAh or Ah) □ Test conditions (temperature, rate) specified
Energy Density Volumetric (Wh/L) & Gravimetric (Wh/kg) □ Meets space/weight constraints
DC Internal Resistance DCR (mΩ), affects heat generation & rate capability □ DCR data at different SOC levels

2. Charge & Discharge Capabilities
Parameter Example Requirement Verification Item
Max Continuous Discharge Current 0.5C / 3C / 10C □ Sufficient for max device load
Peak Discharge Current (Pulse) 20C for 10 seconds □ Pulse duration & duty cycle defined
Standard / Fast Charge Current 0.2C / 1C □ Compatible with device charging strategy
Charge Limit Voltage 4.2V / 4.4V □ Strictly avoid overcharging
Discharge Cut-off Voltage 2.5V / 3.0V □ Device supports low-voltage protection

3. Environmental & Life Parameters
Parameter Typical Range Verification Item
Charge Temperature 0℃ ~ 45℃ □ Covers actual usage environment
Discharge Temperature -20℃ ~ 60℃ □ Low-temperature capacity retention rate
Storage Temperature -10℃ ~ 45℃ □ Storage voltage requirement specified
Cycle Life 500 cycles to 80% @ 1C □ Test conditions (temp, DOD) provided
Calendar Life 3 / 5 / 8 years □ Accelerated aging data available
Self-discharge Rate ≤3% per month □ Data at high SOC provided

4. Safety & Compliance (Mandatory)

  • Transport Safety: UN38.3

  • Cell Safety: UL 1642 / IEC 62133 / GB 31241 (China)

  • Pack Safety: UL 2054 / IEC 62133-2

  • Environmental Compliance: RoHS, REACH

  • Chemical Documentation: MSDS

  • Protection Circuit Functions: Overcharge, over-discharge, overcurrent, short circuit, temperature protection (NTC)

Chalong Fly emphasizes that no battery shipment should be accepted without valid safety certificates.


5. Mechanical & Assembly Information

  • External dimensions and tolerances (especially thickness expansion allowance for pouch cells)

  • Lead/tab configuration (wire, nickel tab, connector model)

  • Form factor (cylindrical, pouch, prismatic)


6. Procurement Deliverables Checklist

Suppliers must provide, but not be limited to:

  1. Official datasheet (including test conditions)

  2. Batch test report (voltage, IR, capacity)

  3. Safety certificate copies (scanned)

  4. Batch traceability and management plan

  5. Quality agreement (including defect rate and warranty period)


7. Common Risk Warnings

  • Actual capacity under high-rate discharge can be significantly lower than rated capacity

  • Usable capacity and discharge capability drop sharply at low temperatures

  • Inconsistent IR within battery packs accelerates whole-pack failure

  • Used or salvaged cells have no reliable life data


For lithium battery selection evaluation tailored to your specific application (energy storage, robotics, portable devices, medical instruments), please contact our technical team.

Chalong Fly – Your trusted partner in battery & power solutions.

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+8618975107916
+86 18975107916
+86 18975107916
+86 18975107916