UL-2054:2011 pdf free download – Household and Commercial Batteries.
4.4 Printed wiring boards
Added 4.4 effective November 11, 2011
4.4.1 Printed wiring boards mounting battery circuit components shall be rated V-i minimum.
Added 4.4.1 effective November 11, 2011
4.5 Lithium Ion Systems Only
4.5 added September 14, 2011
4.5.1 The voltage of each cell or each cellblock consisting of parallel-connected plural cells should not exceed the upper limit of the charging voltage speci®ed by the cell manufacturer.
4.5.2 For the battery consisting of a single cell or a single cellblock, it should be con®rmed that the charging voltage of the cell does not exceed the upper limit of the charging voltage speci®ed by the cell manufacturer.
4.5.3 For the battery consisting of series-connected plural single cells or series-connected plural cellblocks, it should be con®rmed that the voltages of any one of the single cells or single cellblocks does not exceed the upper limit of the charging voltage, speci®ed by the cell manufacturer, by monitoring the voltage of every single cell or the single cellblocks.
4.5.4 Compliance for 4.5.1 ± 4.5.3 can be achieved through analysis of the battery protection circuit or if unable to determine through analysis, than through monitoring values during the test of Section 13A.
PERFORMANCE
5 General
5.1 Batteries are to be tested as described in Sections 9 through 24. Section 12, Forced-Discharge Test, is applicable only to cells intended to be used in multicell series applications, such as battery packs. The Battery Enclosure Tests, Sections 18 ± 21 (including the 250 N Steady Force, Mold Stress Relief, and Drop Impact Tests) are intended only for batteries that have a plastic outer enclosure.
5.1 revised September 21, 2005
5.2 With the exception of the Projectile Test of Section 22, cells and/or batteries shall not explode or catch as a result of the tests in this standard. For the Shock Test, Section 16, Vibration Test, Section
17, 250 N Steady Force Test, Section 19, Mold Stress Relief Test, Section 20, Drop Impact Test, Section 21, and the Temperature Cycling Test, Section 24 the samples shall also not vent or leak. For these tests unacceptable leakage is deemed to have occurred when the resulting mass loss exceeds the values shown in Table 5.1, Venting and Leakage Mass Loss Criteria.
6.3 All batteries shall be fully charged in accordance with the manufacturer’s speci®cations prior to testing except for the samples to be subjected to the Abnormal Charging and Abusive Overcharge Tests, which shall be discharged to the manufacturer speci®ed end point voltage using the manufacturer speci®ed current prior to testing.
Revised 6.3 effective November 11, 2011
7 Important Test Considerations
7.1 As some batteries explode in the tests described in Sections 9 ± 24, it is important that personnel be protected from the ying fragments, explosive force, sudden release of heat, chemical burns, and noise results from such explosions. The test area is to be well ventilated to protect personnel from possible harmful fumes or gases.
7.2 The temperatures on the surface of the battery casings shall be monitored during the tests described in Sections 9, 10, 11, 14, and 15. All personnel involved in the testing of batteries are to be instructed never to approach a battery until the surface temperature returns to ambient temperature.
7.3 The tests described in Section 22, Projectile Test, shall be conducted in a separate room or room equipped with an adequate safety barrier separating the test area from the observer.