Acer Aspire 7552G MSDS, UN38.3, CNAS of Battery pack for transportation - Page 9

UN Test Data (Model:3UR18650-2-T0638) 1.Test Item: External short circuit (T5) P.7/10 2.Test Purpose: This test simulates an external short circuit. 3.Test Procedure: The cell or battery to be tested shall be temperature stabilized so that its external case temperature reaches 55±2℃ and then the cell or battery shall be subjected to a short circuit condition with a total external resistance of less than 0.1ohm at 55±2℃.This short circuit condition is continued for at least one hour after the cell or battery external case temperature has returned to 55±2℃. The cell or battery must be observed for a further six hours for the test to be concluded. SANYO Internal Procedure: As above. 4.Test Requirements: External temperature of test batteries does not exceed 170℃ and there is no disassembly,no rupture and no fire within six hours of this test. 5.Test Date: 2010/1/21-2010/1/22 6.Test Data Battery No. Maximum temperature (°C) Other event Result Judgement At first 1 cycle,in 2 fully charged 3 states 4 54.9 0 PASS 54.7 0 PASS 54.9 0 PASS 54.8 0 PASS At first 5 cycle,in 6 fully discharged 7 states 8 54.9 0 PASS 54.7 0 PASS 54.9 0 PASS 54.7 0 PASS After 50 9 cycles ending in 10 fully 11 charged states 12 54.8 0 PASS 54.6 0 PASS 54.6 0 PASS 54.3 0 PASS After 50 13 cycles ending in 14 fully 15 discharged states 16 54.7 0 PASS 54.3 0 PASS 54.6 0 PASS 54.3 0 PASS Notes: D-Disassembly, R-Rupture, F-Fire, 0-No disassembly, no rupture & no fire PASS