Samsung INR18650-30Q

Name: Samsung INR18650-30Q
Brand: Samsung SDI

18650

Lab Tested

Samsung SDI · INR18650-30Q

Discharge curves from independent lab testing with 4-wire Kelvin measurement

3000mAh

Capacity

3.6V

Nom. Voltage

15A

Max Current

45.6g

Weight

10.8Wh

Energy

237Wh/kg

Energy Density

Discharge Curves

Measured Pulse Resistance

R₀ ~18.1 mΩ · DC ~25.7 mΩ @ 50% SOC

SOC	OCV	R₀	R @ 8.8s	R₁	τ
90%	4.074 V	18.8	26.1	9.2	11 s
80%	4.011 V	18.3	27.4	9.9	12 s
70%	3.904 V	17.8	25.6	7.2	10 s
60%	3.809 V	17.9	25.1	7.8	9 s
50%	3.717 V	18.1	25.7	8.2	10 s
40%	3.633 V	18.1	25.6	7.6	10 s
30%	3.521 V	18.3	25.2	6.6	10 s
20%	3.422 V	19.1	29.8	10.6	11 s
10%	3.188 V	21.4	39.9	18.1	10 s

Resistances in mΩ, measured on the CellBench rig (cell 30Q-3) on 2026-10-07 with 10 A / 8.8 s pulses at each SOC. R₀ is the instantaneous ohmic drop; R @ 8.8s includes polarization and is what the simulator uses for heating; R₁/τ is a one-RC fit to the 40 s relaxation.

Internal Resistance

Typical: ~21.9 mΩ @ 50% SOC

SOC	2A	5A	10A	15A
10%	—	24.6	24.6	23.8
30%	—	20.8	20.8	20.2
50%	—	18.9	18.9	18.3
70%	—	19.9	19.9	19.3
90%	—	18.9	18.9	18.3

Values in mΩ. <25 = low, 25-40 = moderate, >40 = high

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