CMCBR32140S15E Performance Test Report-V1-0619

CMCBR32140S15E Cell Test Report CHAM R&D Center 2025.06.19 1 01 Specifications CONTENTS
02 Electrical Performance 03 Safety Performance 04 Certification 1 Specifications Model CMCBR32140S15E Typical Capacity/mAh 15000(0.5C) Minimum Capacity/mAh 14800(0.5C) Nominal Voltage/V 3.2 AC Impedance/mΩ ≤3 Height/mm 140.0±0.3 Diameter/mm 33.2±0.2 Key Features: High safety Weight/g 295±10 long cycle life Typical Energy Density/(Wh/Kg) 162 high-temperature resistance Standard Charge
0.5C CCCV to 3.65V, 0.05C cut-off Standard Discharge 0.5C CC to 2.0V Rate Charge
1C CCCV to 3.65V, 0.05C cut-off
Max. Continuous Discharge Current 2C Operating Temperature
Charge:0～60℃, Discharge: -20～60℃ Normal Temperature Cycle Life
2500 cycles ≥80%，0.5C-1C,2.0V-3.65V 0.05C cut-off 45°C Cycle Life
1000 cycles ≥80%，0.5C-1C,2.0V-3.65V 0.05C cut-off Rate Discharge
0.5C = 100%; 1.0C ≥ 98% ; 2.0C ≥ 98%
Discharge at Low/High Temperature
Capacity retention: -20℃ ≥ 70%; -10℃ ≥80%; 0℃ ≥ 85%; 25℃ = 100%; 45℃ ≥ 99%; 60℃ ≥ 98%
2.1 Capacity & Charge-discharge curves Test condition Cell S15E
Charge: CCCV 0.5C-3.65V，0.05C cut-off； 0.5C Discharge Discharge Charge Voltage Discharge: 0.5C-2.0V Capacity Voltage Platform Platform 15.449Ah 3.21V 3.4V Capacity Distribution Charge-discharge Curves 3.8 90 Mean Value 15449 3.6 80 Std.Deviation 51.89 N 1043 3.4 70 3.2 60 ycn el/V 3.0 e 50 g u a q lt 2.8 er 40 F Vo 2.6 30 2.4 0.5C Charge 20 2.2 0.5C Discharge 10 2.0 0 0.0 3.0 6.0 9.0 12.0 15.0 15320 15360 15400 15440 15480 15520 15560 Capacity/Ah Capacity/mAh
2.2.1 Alternating Current Internal Resistance-ACIR Test condition Cell S15E ACIR 25℃ 30%SOC,1kHz ACIR DCIR 1.82 mΩ 7.64 mΩ ACIR Distribution 80 Mean Value 1.820 70 Std.Deviation 0.05784 N 1043 60 y 50 cneu 40 qerF 30 20 10 0 1.70 1.75 1.80 1.85 1.90 1.95 2.00 ACIR/mΩ
2.2.2 Direct Current Internal Resistance-DCIR Test condition DCIR 25℃ ,2C-30s DCIR DC 2C 30S HPPC SOC 10%-100% 11.0 100% 7.39 90% 5.91 10.0 80% 6.28 9.0 Ω 70% 6.62 8.0 60% 6.52 IR/m 50% 6.61 DC 7.0 40% 7.08 6.0 30% 7.64 20% 8.43 5.0 10% 10.26 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% SOC 2.3 OCV Test condition 25℃
Charge: CCCV to 3.65V, 0.05C cut-off; 25 ± 2℃
Discharge : 0.5C DC to 2.0V, rest for 2h every 5% capacity DC SOC-OCV@25℃ SOC Voltage/V SOC Voltage/V 3.6 100% 3.372 45% 3.290 95% 3.329 40% 3.289 3.4 90% 3.329 35% 3.288 3.2 85% 3.329 30% 3.282 ) 3.0 (V 80% 3.329 25% 3.265 2.8 75% 3.332 20% 3.247 oltage 2.6 V 70% 3.325 15% 3.220 2.4 65% 3.325 10% 3.206 2.2 60% 3.299 5% 3.149 2.0 55% 3.292 0% 2.718 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 50% 3.290 SOC 2.4 Rate Performance Rate 0.5C 1C 1.5C 2C 3C
Test condition 25±2℃ Capacity/mAh 15349 15344 15329 15319 15335 Capacity
Charge: CCCV to 3.65V, 0.05C cut-off 100.0% 100.0% 99.9% 99.8% 99.9% Retention
Discharge: 0.5/1/1.5/2/3C DC to 2.0V Voltage 3.210 3.167 3.135 3.109 3.066 Plateform/V Temperature 7.2 13.4 17.7 22.3 28.9 Rise/℃ DC-Rate@25℃ DC-Rate Curve@25℃ 105.0% 50.0 3.6 100.0% 100.0% 99.9% 99.8% 99.9% 3.4 0.5C 100.0% 40.0 ℃ )/ 3.2 x /% a 1C 95.0% io V 3.0 t 28.9 30.0 (M /e Ra g 22.3 2.8 a p. 90.0% 20.0 Rise tl 1.5C 17.7 .p o 2.6 Ca V 13.4 m 85.0% 10.0 Te 2.4 2C 7.2 2.2 80.0% 0.0 3C 0.5C 1C 1.5C 2C 3C 2.0 DC-Rate/C 0 3000 6000 9000 12000 15000 Capacity Retention Temperature Rise/℃ Capacity/mAh
2.5 Discharge at High / Low Temperature Test condition
Charge: 0.5C CCCV to 3.65V, 0.05C cut-off; 25 ± 2℃
Discharge: 1C DC to 2.0V, -20/-10/0/25/45/60 ± 2℃
H·L Temperature Capacity.@1C 25℃ Mean Data -20℃ -10℃ 0℃ 10℃ 45℃ 60℃ 3.6 -20℃ Reference 3.4 -10℃ Capacity/m 3.2 0℃ Ah 15294 12597 13776 14488 14970 15256 15201 3.0 /V 10℃ Capacity age 2.8 t ol retention 100.0% 82.4% 90.1% 94.7% 97.9% 99.7% 99.4% 2.6 V 25℃ ratio 2.4 45℃ Voltage 2.2 platform/V 3.162 2.542 2.761 2.956 3.072 3.217 3.235 2.0 60℃ 0 3 6 9 12 15 Capacity/Ah
2.6.1 Normal Temperature (25℃ 28D) Test condition
Charge: 0.5C CCCV to 3.65V, 0.05C cut-off
Discharge: 0.5C CC to 2.0V; 100%SOC; store at 25°C for 28D Before storage Store at 25°C for 28D No. Capacity/m Voltage K-value Retention Retention Recovery Recovery Voltage/V ACIR/mΩ ACIR/mΩ ∆ACIR/mΩ ∆V/V Ah /V mV∕h Cap. /mAh ratio Cap./mAh ratio 7 15475 3.3951 1.86 3.3920 1.86 0 0.0031 0.005 15286 98.8% 15331 99.1% 8 15488 3.3994 1.8 3.3926 1.79 -0.01 0.0068 0.010 15275 98.6% 15318 98.9% 9 15484 3.4026 1.81 3.3940 1.82 0.01 0.0086 0.013 15307 98.9% 15345 99.1% 10 15476 3.3961 1.78 3.3926 1.86 0.08 0.0035 0.005 15289 98.8% 15325 99.0% 11 15479 3.3925 1.8 3.3940 1.93 0.13 -0.002 -0.002 15295 98.8% 15345 99.1%
2.6.2 High Temperature Storage(60℃ 7D) Test condition
Charge: 0.5C CCCV to 3.65V, 0.05C cut-off
Discharge: 0.5C CC to 2.0V; 100%SOC; store at 60°C for 7D Before storage Store at 60°C for 7D No. Capacity/m Voltage K-value Retention Retention Recovery Recovery Voltage/V ACIR/mΩ ACIR/mΩ ∆ACIR/mΩ ∆V/V Ah /V mV∕h Cap. /mAh ratio Cap./mAh ratio 61 15376 3.4082 1.8 3.3600 2.1 0.3 0.0482 0.287 14900 96.9% 14943 97.2% 62 15378 3.4108 1.86 3.3630 2.09 0.23 0.0478 0.285 14905 96.9% 14955 97.2% 63 15385 3.4124 1.82 3.3609 2.02 0.2 0.0515 0.307 14904 96.9% 14947 97.2% 64 15396 3.4102 1.83 3.3610 2.06 0.23 0.0492 0.293 14913 96.9% 14960 97.2% 65 15354 3.413 1.81 3.3620 2.11 0.3 0.051 0.304 14905 97.1% 14942 97.3%
2.6.3 High Temperature Storage (60℃ 28D) Test condition
Charge: 0.5C CCCV to 3.65V, 0.05C cut-off
Discharge: 0.5C CC to 2.0V; 100%SOC; store at 60°C for 28D Before storage Store at 60°C for 28D No. Capacity/m Voltage K-value Retention Retention Recovery Recovery Voltage/V ACIR/mΩ ACIR/mΩ ∆ACIR/mΩ ∆V/V Ah /V mV∕h Cap. /mAh ratio Cap./mAh ratio 137 15492 3.3883 1.8 3.3256 2.27 0.47 0.06 0.09 14479 93.5% 14797 95.5% 138 15430 3.3827 1.85 3.3257 2.21 0.36 0.06 0.08 14473 93.8% 14797 95.9% 139 15444 3.3897 1.86 3.3256 2.29 0.43 0.06 0.10 14537 94.1% 14855 96.2% 140 15441 3.3807 1.84 3.3254 2.21 0.37 0.06 0.08 14473 93.7% 14809 95.9% 141 15486 3.3804 1.84 3.3255 2.13 0.29 0.05 0.08 14492 93.6% 14824 95.7%
2.6.4 High Temperature Storage (85℃ 14D) Test condition
Charge: 0.5C CCCV to 3.65V, 0.05C cut-off
Discharge: 0.5C CC to 2.0V; 100%SOC; store at 85°C for 14D Before storage Store at 85°C for 14D No. Capacity/m Voltage K-value Retention Retention Recovery Recovery Voltage/V ACIR/mΩ ACIR/mΩ ∆ACIR/mΩ ∆V/V Ah /V mV∕h Cap. /mAh ratio Cap./mAh ratio 22 15342 3.3930 1.86 3.3233 2.18 0.32 0.0697 0.207 14002 91.3% 14166 92.3% 23 15352 3.3897 1.83 3.3232 2.19 0.36 0.0665 0.198 13993 91.1% 14167 92.3% 24 15350 3.3937 1.87 3.3233 2.34 0.47 0.0704 0.210 13986 91.1% 14151 92.2% 25 15346 3.3930 1.96 3.3233 2.34 0.38 0.0697 0.207 13980 91.1% 14145 92.2% 26 15405 3.3851 1.92 3.3233 2.36 0.44 0.0618 0.184 14074 91.4% 14250 92.5%
2.7 Room Temperature Cycle Performance
Test condition 25 ± 2℃
Test condition 25 ± 2℃
Charge: 0.5C CCCV to 3.65V，0.05C cut-off，rest for 10min
Charge: 0.8C CCCV to 3.65V，0.05C cut-off，rest for 10min
Discharge: 1C CC to 2.0V，rest for 30min
Discharge: 1C CC to 2.0V，rest for 30min 25℃ 0.5C/1C 2.0-3.65V 25℃ 0.8C/1C 2.0-3.65V 105.00% 105.00% 100.00% 100.00% n/% n/% io io 95.00% 95.00% ent ent t t re re 90.00% y y 90.00% cit cit pa pa 85.00% 85.00% Ca Ca 80.00% 80.00% 0 1000 2000 3000 4000 0 500 1000 1500 2000 2500 Number of cycles Number of cycles Cell Cyclic number Retention ratio/% Cell Cyclic number Retention ratio/% 1# 4011 81.82 3# 1946 79.97 2# 4019 81.59 4# 2088 79.91
2.8 High Temperature Cycle Performance
Test condition 45 ± 2℃
Charge: 0.5C CCCV to 3.65V，0.05C cut-off，rest for 10min
Discharge: 1C CC to 2.0V，rest for 30min 45℃ 0.5C/1C 2.0-3.65V 105.00% 100.00% /% Cell Cyclic number Retention ratio/% tion n 95.00% 5# 2454 79.73 tee y r 90.00% 6# 2468 79.54 85.00% Capacit 80.00% 0 500 1000 1500 2000 2500 Number of cycles 3 Safety Performance No. Tests Testing Standard Phenomena S15E 3.1 External short circuit GB 38031-2025 No fire, no explosion Pass 3.2 Abnormal charge GB 43854-2024 No fire, no explosion Pass 3.3 Forced discharge GB 38031-2025 No fire, no explosion Pass 3.4 Drop GB/T 31485-2015
No fire, no explosion, and no leakage Pass 3.5 Crush GB 38031-2025 No fire, no explosion Pass 3.6 Vibration UL 1642
No fire, no explosion, and no leakage Pass 3.7 Seawater Immersion GB/T 31485-2015 No fire, no explosion Pass 3.8 Low Pressure UL 1642
No fire, no explosion, and no leakage Pass 3.9 Heating GB 38031-2025 No fire, no explosion Pass 3.10 Temperature Cycling GB 38031-2025
No fire, no explosion, and no leakage Pass 3.11 Nail penetration GB 43854-2024 No fire, no explosion Pass
3.1 Safety Performance - External short circuit Test method
The sample cell should be fully charged according to the standard, and short-circuited by connecting positive and negative terminals with a circuit load
having a resistance ≤ 5mΩ. The temperature of the case should be measured during the test. The cell should remain on test for 10 minutes or until the
temperature of the case declines by 20% of the maximum temperature.
Criteria: No fire, no explosion Total External Before Test After Test Maximum Maximum Discharge time No. Resistance Temperature Phenomenon Resistance Resistance current (A) (s) (mΩ) Voltage (V) Voltage (V) (℃) (mΩ) (mΩ) 42# 3.4702 1.86 0 ∞ 100.2 404.8 17.47 No fire, no explosion 43# 3.29mΩ 3.3441 1.8 0 ∞ 95.0 384.4 17.99 No fire, no explosion 44# 3.3416 1.83 0 ∞ 108.3 395.6 17.02 No fire, no explosion
3.2 Safety Performance - Abnormal charge Test method
The sample cell should be fully charged according to the standard, and subjected to the charging process with the current of 1C until voltage reaches
1.5 times of charging cut-off voltage or the charging time reaches 1.5h, then stop and observe for 1 hour.
Criteria: No fire, no explosion Maximum CID Before Test After Test Disconnection No. Temperature Disconnection Phenomenon Voltage (V) Resistance (℃) Time (s) Voltage (V) Voltage (V) Resistance (mΩ) (mΩ) 36# 48.7 323 5.1821 3.3760 1.82 0 ∞ No fire, no explosion 37# 47.6 326 5.2098 3.3765 1.81 0 ∞ No fire, no explosion 38# 49.7 326 5.1913 3.3761 1.81 0 ∞ No fire, no explosion
3.3 Safety Performance - Forced discharge Test method
Adjust the SOC of sample cell to the discharge cut-off voltage state, and subjected to discharge for 30min with the current of 1C, observe for 1 hour.
Criteria: No fire, no explosion Maximum CID Before Test After Test Disconnection No. Temperature Disconnection Phenomenon Voltage (V) Resistance Resistance (℃) Time (s) Voltage (V) Voltage (V) (mΩ) (mΩ) 39# 62.3 no no 3.3770 1.79 0 1.88 No fire, no explosion 40# 59 no no 3.3780 1.86 0 1.92 No fire, no explosion 41# 64.2 no no 3.3752 1.85 0 1.97 No fire, no explosion
3.4 Safety Performance - Drop Test method
The sample cell should be fully charged according to the standard, and dropped onto a flat concrete floor from height of 1.5m. The positive and
negative electrode side should be dropped once, respectively. Observe for at least 1h.
Criteria: No fire, no explosion, and no leakage Before Test After Test No. Phenomenon Voltage (V) Resistance (mΩ) Voltage (V) Resistance (mΩ) 51# 3.3718 1.82 3.3640 1.83
No fire, no explosion, and no leakage 52# 3.3716 1.84 3.3640 1.82
No fire, no explosion, and no leakage 53# 3.3706 1.78 3.3647 1.82
No fire, no explosion, and no leakage