18650 Samsung 25R 2500mAh Li-ion 3.7V HIGH DRAIN


Samsung INR 18650 25R Li-ion Lithium 2500mAh HIGH DRAIN Rechargeable Battery

In stock


INR 18650 25R Samsung 2500mAh Li-ion 3.7V Rechargeable Battery (Genuine)

High Current – 20Ah Discharge Rate – FLAT TOP


18650 25R Samsung Batteries are available in THREE following models/sizes:

Flat Top (65mm~ Long) | Buton Top (67mm~ Long) | PROTECTED Button Top (70mm~ Long) Three Types of 18650 Samsung 25R 2500mAh Batteries

Three Types of 18650 Samsung 25R 2500mAh Batteries


Please carefully measure your device’s battery compartment and make sure to choose the correct version. (e.g., Most Doorbells and Solar Cameras ONLY work with Buton Top 67mm~ version). Another factor that needs to be considered is a 18650 Cell Discharge Rate, as some devices (e.g., Power Tools) require High Discharge or High Drain batteries to be able to supply a high amperage in a shorter time on demand.

Note: Unlike a number of generic products in the market claiming unrealistic high capacities, we ONLY supply GENUINE and fresh batteries. Each cell is tested before dispatch.


Product Features: 

  • Capacity (Ah): 2.5 Ah Max (2500 mAh) Min (2390 mAh)
  • Nominal Voltage (V): 3.7 V
  • Charging Voltage (V): 4.2 V
  • Charging Current (Ah): 4 Ah (Rapid)
  • Cut-off Voltage (V): 2.5 V
  • Rapid Charging Time: 60 min
  • Energy: 9.2 Wh
  • Max. Discharge rate (Amh): 20 A Continuous (Recommended)
  • Pulse current (Ah): (5-6 sec.): 40 Ah
  • Weight (g): 45 g (Max)
  • Diameter (mm): 18.33 mm (+/- 0.07 mm)
  • Height (mm): 64.85 mm (+/- 0.15 mm)
  • PCB: No
  • Top (positive side): Flat top
  • Model: INR18650-25R
  • Made in Korea

Package Includes: 

  • 1x Genuine Samsung INR 18650-25R 2500mAh Li-ion Rechargeable Flat Top Battery
  • 1x Battery Carry Case


  • Never wholly discharge Li-ion battery (below 2.5V under load).
  • Fully charge a battery to 4.2V before first use.
  • Never use force to install (insert) Li-ion battery.
  • Do not use old and new battery cells together.
  • Use only a high-quality battery charger.
  • Do not remove the heat shrink/wrapping cover (it must be used as it is).
  • Do not expose to heat, NOT penetrate or modify.
  • Do not short (connect) positive (top), and negative (bottom) battery terminals (contacts).
  • Keep a battery, not in use in a plastic holder (or any insulating [plastic] container).
  • Never charge a battery over 4.25V (another reason to use a high-quality battery charger).
  • Do not charge unattended nor overcharge unprotected cells.

Top Quality 18650 Chargers: https://www.xerom.com.au/product-category/chargers/

To learn more visit: https://batteryuniversity.com/

Additional information

Weight 250 g
Dimensions 25 × 15 × 5 cm





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