The latest US standard UL2272 is mainly aimed at the safety test standard specified by the market torsion vehicles and self-balancing vehicles. Recently, the US Consumer Product Safety Association (CPSC) announced that all manufacturers, importers, Dealers, whose self-balancing vehicles produced, imported and sold in the United States must meet the latest safety standards, including the UL 2272 self-balancing vehicle electrical system certification standard. In addition, all balance car batteries must meet UN38.3 certification requirements.

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UL2272 certification test items

Electrical test s

Overcharge Test

Short Circuit Test

Overdischarge Test

Temperature Test

Imbalanced Charging Test

Dielectric Voltage Withstand Test

Isolation Resistance Test

Leakage Current

Grounding Continuity

Mechanical tests

Vibration Endurance Test

Shock Test

Crush Test

Drop Test

Mold Stress Relief Test

Handle Loading Test

Strain Relief Tests

Environmental tests

Partial Immersion Test

Water Exposure Test (IP Code Rating)

Thermal Cycling Test

Label Permanence Test

Motor Tests

Motor overload Overload

Motor Locked Rotor Test

Information required for UL2272 certification:

1. Appearance dimension drawing;

2. Specification of battery pack;

3. Specifications of battery cells;

4. The circuit diagram of the whole set of circuit boards and the PCB wiring diagram;

5. The software program protection principle block diagram and hardware protection principle block diagram of the whole circuit board;

6, the circuit board BOM table;

7. Motor specification;

8. Electronic file label (including: model, voltage (Vdc), capacity (Ah or Wh), production date, polarity label, warning statement);

9. Coding rules for production date;

10. Product instruction manual;

Warning words to be marked on the label:

a. Use Only (__) Charger.

b. WARNING – To reduce the risk of injury, user must read instruction manual.