UL 1642-2020 pdf free download

UL 1642-2020 pdf free download.STANDARD FOR SAFETY Lithium Batteries. 319 MATERIAL, TOXIC — My material haveig a toxic hazard rating of 2. moderate, In the Sax Dangerous Properties of bdisttlal Materials referer book or related reference guide 320 MAXIMUM CHARGING CURRENT (hthium o systems) – The maxman charging current in ceO ope*’ating region, e4idi specified by the ceo rnantiturei. 321 POUCH CELL – A cal which is often pflssnax m shape and whose contents are enclosed wlthm a seed flexible poudi rather than a rigid casing 3-22 ROOM TEMPERATURE – Approximately 23’C (7rF). 323 UPPER LIMIT CHARGING VOLTAGE (lithkaii ion systems) – The hiofiest charng voltage in the cell-operating region speatted by the cell manuflizer. This value is specified by the cell manufacturer and although it is a maxrnum limit, it may be bas than the maximum thargetg voltage parameter specified for the abnormal charging test. 324 VENTING – When th battery or cell eiectoI1 4 emitted as a liquid. pts, or vapor from a designed vent or throui a s.aI. CONSTRUCTION 4 General 4.1 CasIng 4 11 The casing of a bewn battery shall have th s.ngIh and rigidity n.oeswy to resist the abuses to w?ticti it may be subec1ed without resulting In a flak of fire The casing of a uwrepiaceabIe ithium battery shall have the strength and rigidity necessy to resist the abuses to etacIi it may be subjected without resulting in a risk of qury to persons 41.2 A cell of a user-replaceable battery shall be ma rigid casing of sufficient strength to prevent flexing. A tad providing the mechanical advantage of a pIers, screwdriver, or hadcsaw shall be the mininium capable of opening the user-replaceable cell casing, if opening of the casing wil expose metallic lithium, Except ton: This rqwrement does not apply to a cal c.inlng Sm tht, 002 g (00007 ox) of ttlhium metal. 42 Electrolyte 4.2.1 A user-replacele battery shall not contain pressurized vapor or liquid tti could spray materials vito the eyes or lear. more than 5 ml of liquid wtlen the battery casing 4 punctured under normal laboratory conditIons. 23 t2’C (73 f3.6F). 4.3 Us. 43.1 A lithium battery al be protected from abnormal charging currents dissig use. A battery tested and found acceptable for the charging cia-rent, I (see Section ii), under fault conditions specified by the manufacturer, shall be protected from larger charging ciinents in the end prockict...