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Samsung 35E 18650 Battery, 3500mAh, 3.65V, Grade A Lithium-ion (INR18650-35E)(Pink)

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Samsung INR18650-35E 3500mAh (Pink)

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Official specifications:

  • Nominal capacity: 3500mAh

  • Minimum capacity: 3350mAh

  • Nominal voltage: 3,6V – 3,7V

  • Charging voltage: 4,2V

  • Discharge current: 8A

  • Maximum discharge current: 13A

  • Charge current: 0,6C 2000mA

  • Discharge end voltage: 2,65V

  • Pluspol: FlatTop

  • Chemistry: LiNiCoAlO2

  • Diameter: 18,55mm ± 0,1

  • Height: 65,25mm ± 0,15

  • Weight: 48g ± 1

Samsung%20INR18650-35E%203500mAh%20(Pink)-info

This is one of the new high capacity cells.

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Samsung%20INR18650-35E%203500mAh%20(Pink)-Capacity

The discharge curves has good tracking.
At 15A the B track stops just after 2.3Ah, this is because my battery holder melts (I hope this is fixed now).

Samsung%20INR18650-35E%203500mAh%20(Pink)-Temp-7.0

Samsung%20INR18650-35E%203500mAh%20(Pink)-Temp-10.0

Samsung%20INR18650-35E%203500mAh%20(Pink)-Temp-15.0

15A is definitly too high current for this cell. The cell temperature is above 75°C (25°C ambient + 50°C temperature raise). Logfile says 87°C for A cell.

Samsung%20INR18650-35E%203500mAh%20(Pink)-CapacityTimeHours

Samsung%20INR18650-35E%203500mAh%20(Pink)-CapacityTime

On this chart it is obvious how the heat improves the performance at 15A.

Samsung%20INR18650-35E%203500mAh%20(Pink)-Energy

Samsung%20INR18650-35E%203500mAh%20(Pink)-PowerLoadTime

Samsung%20INR18650-35E%203500mAh%20(Pink)-TripCurrent

Due to the melted battery holder I did only do this for one cell.

Samsung%20INR18650-35E%203500mAh%20(Pink)-Charge