2.2.8. Battery voltage of the Vehicle specified in 2.1.8 of this Regulation shall be tested as follows: Fully charge the batteries according to the manufacturer's specifications, let it be for 2 hours, and measure the battery voltage with a specialized electrical measuring instrument.

2.2.9. Testing of power system of Vehicle

2.2.9.1. Inspect the insertion of power system components by observation.

2.2.9.2. The water resistance test in 2.1.9.2 of this Regulation shall be tested using test equipment as shown in figure 1. Spray water directly over the machine of the Vehicle. The water pressure is adjusted to give a delivery rate of (10 ± 0,5) I/min. The test duration shall be 5 minutes.

Dimensions in millimeters

1. Cock

2. Pressure gauge

3. Hose

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5. Spray nozzle

6. Counterweight

7. Spray nozzle with 121 holes Ø 0,5:

- 1 hole in center

- 2 inner circles of 12 holes at 30° pitch

- 4 outer circles of 24 holes at 15° pitch

8. Machine under test

Figure 1 - Hand-held Water Spraying Equipment

2.2.9.3. Isolation resistance specified in 2.1.9.3 of this Regulation shall be tested using a megohmmeter.  Parts to be tested include frame, handlebar, battery box and engine housing.

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Allow the Vehicle's engine to operate, apply the brakes and use a multimeter to check whether the power supply to the engine is disconnected.

2.2.9.5. The feature “cut off power assistance of the Electrically power assisted vehicle when pedaling stops or when the Vehicle reaches a speed of more than 25 km/h” specified in 2.1.9.4.b of this Regulation shall be tested as follows:

Use a multimeter to check whether the power supply to the engine is disconnected when pedaling stops or when the Vehicle reaches a speed of more than 25 km/h.

2.2.9.6. The feature “provide undervoltage or overcurrent protection” specified in 2.1.9.4.c of this Regulation shall be tested as follows:

a) Gradually reduce the voltage supplied to the Vehicle until the undervoltage protection feature works. Record the value of protection voltage.