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<br /> <br /> Page 82 of 111 <br /> <br />Report No.: 2410B0143SHA-001 <br /> <br />TRF No. ANSI/CAN/UL 9540A_Unit <br /> <br />Attachment 5 Observations and records <br /> <br />Cell 6 was heated as the target cell at a rate of 4°C-7°C per minute until thermal runaway occurred. <br />Below table summarizes the details: <br /> <br />Ambient conditions at the <br />initiation of the test: 16.6°C, 35%RH <br />Module voltage before test: M02 M03 M04 <br />49.7V 49.8V 49.5V <br />Module weight before test 40.3kg (initiating module with test auxiliary material) <br />Time when test was <br />initiated: 2024.12.13 19:06 <br />Observations during test*: <br />1st vented -- 1st thermal runaway 19:52 <br />2nd vented -- 2nd thermal runaway 19:58 <br />The other 5 cells vented and went to thermal runaway one by one and hence <br />weren’t shown in the table. <br />8th vented -- 8th thermal runaway 20:51 <br />No flying debris or explosive discharge of gases. <br />No sparks, electrical arcs, or other electrical events. <br />No external flaming was observed <br />Post-test evaluation: <br />1 cell went to thermal runaway due to external heating. <br />7 cells vented and went to thermal runaway due to thermal runaway <br />propagation. <br />Thermal runaway was observed on all 8 cells of the cell block (8S), <br />containing the initiating cell. <br />No thermal runaway was observed on the block (7S) without initiating cell. <br />No thermal runaway propagation from initiating module to other modules in <br />initiating unit. <br />No thermal runaway propagation from initiating unit to other units. <br />Time when test was <br />terminated: 2024.12.14 15:00 <br />Module voltage after test: M02 M03 M04 <br />49.2V 0V (abnormal) 49.2V <br />Module voltage drop: M02 M03 M04 <br />0.5V 49.8 0.3V <br />Number of cells vented: 8 cells (cell 1 to cell 8) <br />Number of cells went to <br />thermal runaway: 8 cells (cell 1 to cell 8) <br />Module weight after test: 37.0 kg (with test auxiliary material) <br />Module weight loss: 3.3 kg <br />Remark: <br />* Sound of cell rupture was not heard due to the configuration of the pouch cell and cell thermal runaway <br />was confirmed by both the cell temperature curves and test phenomenon. <br />