Samsung 26JM 18650 Battery, 2600mAh

Samsung 26JM 18650 Battery, 2600mAh

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The Samsung 26JM is a lithium-ion cell intended for use in 18650 battery packs. It can power a wide range of devices including a portable page scanner, portable page scanner, or technical data screen. Samsung 18650 batteries are highly regarded for performance and safety.

The 26JM ships from Malaysia or Hong Kong to anywhere in the world. Our facility in Dongguan, China provides additional services such as cell assembly into battery packs, testing, or the addition of nickel tabbing, wiring, or other accessories.

This product is protected by warranty covering authenticity, performance, age, and defects.

BASIC Brand Samsung
Model name(s) ICR18650-26JM
Manufacturer full SDI (Samsung SDIEM)
Country of Manufacture Malaysia
  • SIZE Weight 47.00 g
  • Diameter, max. 18.40 mm
  • Height, max. 65.00 mm
  • VOLTAGE Voltage, charge max. 4.20 V
  • Voltage, nominal 3.70 V
  • Voltage, discharge end 2.75 V
  • CAPACITY Capacity, max. 2600.00 mAh
  • CURRENT Constant charge current, max. 2.60 A
  • Max. continuous discharge current 5.20 A
  • Peak discharge theoretic, 4 sec 9.1 A
  • C-rate (charge, max.) 1 C
  • C-rate (discharge, max.) 2 C
  • POWER Watts (charge, max.) 9.62 W
  • Watts (discharge, max.) 19.24 W
  • ENERGY Energy, max. 9.62 Wh
  • Density volumetric theoretic 557 Wh/L
  • Density gravimetric theoretic 205.00 Wh/kg
  • E-rate (charge, max.) 1 E
  • E-rate (discharge, max.) 2 E
  • TIME Standard charge 3 hours
  • Rapid charge 2.5 hours
  • TEMPERATURE Storage (less than 1 month) -20 – 60 °C
  • Storage (less than 3 month) -20 – 45 °C
  • Storage (less than 1 year) -20 – 25 °C
  • Temp charge, min 0.00 °C
  • Temp charge, max 45.00 °C
  • Temp discharge, min -20.00 °C
  • Temp discharge, max 60.00 °C
ADDITIONAL Remarks Identical to 26J but manufactured in Malaysia instead of South Korea

Do not purchase 18650 batteries before reading and understanding these safety cautions. Using a lithium-ion cell incorrectly may cause it to leak, generate heat, smoke, catch on fire, or explode.

General Cautions

  • The cell must stay in the operating temperatures outlined in its data sheet
  • The cell must not exceed voltage, current, and other ratings in its data sheet
  • Be careful not to short-circuit
  • Store batteries separately, and do not transport without proper packaging
  • Never store or transport together with conductive or metallic objects particularly in a pocket or bag
  • Do not keep in the sun, in a hot car, or anywhere with direct heat
  • If you notice an unusual odor, rust, can deformation, damaged surface, or fluid discharge, especially on first use, discontinue use and contact our hotline
  • Keep cells away from animals and children
  • If the cell is attached to a PCB, keep it away from high-static environments
  • When nominal capacity after full discharge cycle is less than 80% of rated capacity, please discontinue use
  • Recycle discontinued batteries according to local regulations and cover terminals with insulating tape before disposal


  • Use the charging method Constant Current-Constant Voltage (CC/CV)
  • Use a stipulated charger for 18650 lithium-ion batteries
  • Never charge with a cigarette lighter charger or directly by electric outlet
  • Before using a charger or electronic device, read its user manual
  • Confirm terminals are aligned correctly before inserting cell into charger or device
  • Do not exceed max. charge voltage and current, and charge operating temperatures
  • Do not charge near high temperatures or flammable materials like cardboard boxes
  • Discontinue charging after exceeding charge time outlined in the user manual or data sheet
  • If the cell does not increase charge after prolonged time in the charger, discontinue use
  • Charger or device should implement warning for over-voltage, over current, and over-temperature, control of overcharge, and charge timer


  • Use the discharging method Constant Current (CC)
  • Peak or burst current ratings should only be used theoretically for the design of battery packs with protection circuitry
  • Discharge within the operating temperature range
  • Do not exceed maximum continuous discharge current, and other limits detailed in the cell data sheet
  • Discharge end or cut-off voltage in data sheet is lower-limit for discharge cycle and should not be exceeded


  • Do not exceed any of the rated specifications
  • Do not charge or discharge near flammable materials or gas
  • Do not disassemble or reconstruct
  • Do not throw, puncture, or incinerate
  • Do not ingest
  • Do not let batteries get wet or submerged
  • Do not allow the positive and negative poles to connect with conductive materials
  • Do not reverse polarity
  • Do not insert insulation or other objects between the metal plate, cell, or other components
  • Do not store or transport improperly
  • Do not mix use with other battery brands or models
  • Do not solder directly on the cell
  • Do not overheat, overload, or give excess pressure (especially to the negative terminal) to the battery during solder or weld
  • Do not touch a leaking cell

18650 Battery Packs

  • Only construct battery packs if you are competent in doing so
  • Inspect each cell visually before packaging or assembly into battery pack
  • Do not use cells with any conspicuous signs of deformation like discoloration, can-distortion, fluid discharge, rust, or electrolyte odor
  • Use cells of the same capacity/voltage rank or Lot Number
  • Different cell brands or models should not be combined into a battery pack
  • Handle stripped leading wires and contact plates carefully; insulate exposed contacts and conductors when possible
  • Position the cells in battery pack as far away from source(s) of heat as possible

Packs powered by 18650 batteries should include the following circuitry to establish a baseline of operational safety:

  • Over and under voltage protection
  • Overcharge and discharge current protection
  • Short circuit protection
  • Over temperature protection
  • Cell imbalance protection (If battery packs are assembled with two or more cells)
  • Cell voltage balancing protection (If battery packs are assembled with two or more cells)