UL 2743 PDF

1 Scope

1.1 These requirements cover portable and movable power packs provided with one or more batteries, electrochemical capacitors, or electrochemical capacitor modules. If provided with a battery, the battery shall be either a lead acid or lithium ion battery. The power packs are provided with one or more inputs and one or more outputs. For power packs provided with a booster function, the power packs are used for providing a temporary power source to a depleted land vehicle battery, rated 24 V dc maximum, to provide emergency starting power.

1.2 These requirements cover power packs suitable for outdoor use, temporary outdoor use, or indoor use only. Outdoor use packs are intended to be used outdoors with no restrictions. Temporary outdoor use packs are intended to be used outdoors in limited wet conditions and always stored indoors. Indoor use only packs are intended to be stored indoors and used indoors and are not intended to be used outdoors at any time. A power pack with a booster function is not considered indoor use only under any conditions.

1.3 These requirements cover power packs provided with additional systems such as an air compressor (tankless type) for inflating tires or other inflatable items, or with a light to act as warning lights to oncoming traffic, as a flashlight, or the like. These functions are also powered by the internal battery.

1.4 These requirements cover the power pack options such as lights, voltmeters, internal air compressor assemblies, associated gauges, inverters, vehicle adapters, and internal batteries, as well as the charging of the internal batteries, when these options are integral to the power pack.

1.5 These requirements do not cover wiring or cabling used in the recharging function of electric vehicle recharging equipment.

1.6 These requirements do not cover power banks which are covered in the Outline of Investigation for Power Banks, UL 2056.

1.7 These requirements do not cover power packs having a capacity exceeding the limits specified in which are covered by the Standard for Energy Storage Systems and Equipment, UL 9540.

Portable power pack technology

Aggregate capacity

kWh

MJ

Lead-acid, all types

70

252

Lithium-ion, all types

20

72

Electrochemical Capacitors

3

10.8

Summary of Topics

This revision of ANSI/CAN/UL 2743 dated April 14, 2023 includes the following changes:

– Clarification to definition of hazardous voltage level; 5.21

– Addition of definition of "portable or moveable"; 1.7, Table 1.1, 4.3, 5.29A

– Alignment of requirements for sub-enclosures with UL 746C; 7.3.2

– Receptacle output not supplied by AC mains; 12.3.1, 12.3.1A, 17.5, 70.24, 72.3, 4.3

– Increase the vehicle adapter voltage rating; 11.1.2

– Replacement of UL 60950-1 with UL 62368-1 for external charger standard; 11.3.2, 4.3

– Double insulated products with functional earthing; 5.18A, 14.2 – 14.6

– Alternative cell standard for Lithium and Lead Acid batteries; 28.2.1, 28.3.1, 4.3

– Addition of alternative standard for inverters in the power pack; 30.1, 4.3

– Addition of mass limitation for stability test; 37.1

– Addition of the induction output and energy hazard measurement test; 12.1.2, 12.1.3, 12.4.3, 12.5.3, Section 12.6, Section 47A

– Addition of LVLE circuit requirements and test; 5.27, 12.1.4, Section 12A, Section 47B

– Clarification of Leakage Current Test with hazardous voltage circuits; 46.1, 49.1

– Option of single fault condition in control circuit besides functional safety evaluation; 40.1, 50.1.7

– Clarification of the short circuit resistance for output short circuit test; 50.2.2, 50.2.3

– Charging current for Overcharging Test; 50.9.2

– Additional requirements for large energy storage systems (ESS); 28.3.7, 32.4, Section 50.11, 70.23

– Strain relief test for interconnecting cable; 11.2.2.1, 11.2.2.3, Section 54.1

– Updates to the Impact Test and Drop Test; 55.1.2, 55.2.1, 55.3.1, 55.3.2

– Clarification of the compliance criteria for the Rain Test; 5.15, 5.31A, 5.31B, 60.2, 60.2A, 60.3, 60.3A, 60.4, 69.1

– Power Pack Ampacity Test and booster ampacity rating marking; 65.1, 69.1

– Addition of UL 969A requirements for flag labels; 69.3, 4.3

– Revisions to Markings and Instructions; 70.11, 70.12, 72.3

– Addition of instruction for booster cable connection and disconnection to battery; 72.3

– Clarification to Annex A as Normative or Informative