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SAMSUNG INR18650-25R

SAMSUNG INR18650-25R

Technical Specifications

Nominal Voltage: 3.6 V
Typical Capacity: ~2,500 mAh (Standard discharge)
Dimensions: Approx Ø 18.33 mm × 64.85 mm (max)
Weight: Max ~45 g

Standard Charge Method: CCCV at 1.25 A, 4.20 V, 0.125 A cut-off
Max Continuous Discharge Current: Up to ~20 A @ 25 °C
Discharge Cut-off Voltage: 2.5 V
Operating Temperature Range:

Charge: 0 °C to 45 °C

Discharge: -20 °C to 60 °C (surface temp limit at ~70 °C)

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Key Performance Highlights

  1. High-Drain Capability: Supports up to 20 A continuous discharge current.
  2. Moderate Capacity: Nominal capacity of 2,500 mAh.
  3. Fast Charging Support: Accepts a rapid charge current of 4 A (CC/CV).
  4. Low Internal Resistance: Initial AC internal impedance is ≤ 18 mΩ, which helps minimize voltage drop and heat.
  5. Wide Temperature Range: Operates effectively from –20 °C to ~75 °C (discharge) per spec sheet.
  6. Good Cycle Life: Rated cycle life of around 250 cycles with capacity ≥ 1,500 mAh (~60% of original).
  7. Stable Temperature Performance: Maintains full capacity (100%) at 10 A discharge across a broad temperature range (–20 °C to 60 °C).
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Factory Direct Supply-Guarantee 100% Genuine Cells And Better Price SAMSUNG INR18650 25R battery cell specification

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INR18650-25R certificatesMSDS, UN38.3, UL, CB, IEC62133, BIS, etc.

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Frequently Asked Questions

What is the continuous discharge current?

  • The maximum continuous discharge current is rated at 20 A (at ~25°C).
  • Some tests show good performance near that level under realistic conditions.

What is the recommended charging method?

  • Use a CC/CV profile, charging up to 4.20 V.
  • Standard charge current is 1.25 A, while rapid charge is 4.0 A.

What is the internal resistance?

  • The AC internal resistance is ≤ 18 mΩ per datasheet.
  • Independent testing measured DC resistance at ~14.8 mΩ.

What is the operating temperature range?

  • Charge: 0 °C to 50 °C (recommended re-charge limit < 45 °C).
  • Discharge: –20 °C to 75 °C (recommended < 60 °C for re-discharge).

What are common use cases for this cell?

  • High-drain power tools, electric bikes, robotics, and other applications that require high current draw combined with moderate capacity.
  • Reviewers also recommend it for DIY battery packs due to its balanced performance.

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