Routine Maintenance

1

Equipment room environment

• The fireproof door of the equipment room remains closed, and the air conditioner works normally without interruption.
• There is no dust or flammable sundries in the equipment room.

• Check method: visual inspection
• Troubleshooting: Rectify the fault based on the acceptance criteria.

Monthly

2

Rodent-proof

Rodent-proof measures are taken in the equipment room, such as rat guard and mouse trap.

• Check method: visual inspection
• Troubleshooting: Rectify the fault based on the acceptance criteria.

Monthly

3

Equipment room's firefighting system

A fire alarm system and fire extinguishers have been installed in the battery equipment room.

• Check method: visual inspection
• Troubleshooting: Rectify the fault based on the acceptance criteria.

Monthly

4

Installation position

There is no air exhaust vent or refrigerant copper pipe of the air conditioner placed above the lithium battery cabinet, and no other water leakage risks exist.

• Check method: visual inspection
• Troubleshooting: Rectify the fault based on the acceptance criteria.

Monthly

5

Ambient temperature

Actual temperature: ______°C (Allowed temperature: 0°C to 40°C; recommended temperature: 20°C to 25°C)

• Check method: Measure using a hygrothermograph.
• Troubleshooting: Check that the air conditioner runs properly.

Monthly

6

Ambient humidity

Actual humidity: ______% (5–95% RH, non-condensing)

• Check method: Measure using a hygrothermograph.
• Troubleshooting: Check that the air conditioner runs properly.

Monthly

1

Cabinet appearance

The cabinet is free from dust (on air filters and fans), rust, and deformation.

• Check method: visual inspection
• Troubleshooting: Rectify the fault based on the acceptance criteria.

Monthly

2

Battery appearance

• Batteries are free from stains.
• Battery wiring terminals are intact.
• Batteries are intact and free of damage, deformation, bulges, and cracks.
• Batteries have no electrolyte leakage. (If electrolyte leakage occurs, there will be a pungent smell.)

• Check method: visual inspection
• Troubleshooting: Contact technical support.

Monthly

3

Cabinet cable hole protection

The cable holes of the lithium battery cabinet have been sealed using the standard sealing plates or glands, and rodent-proof measures are taken.

• Check method: visual inspection
• Troubleshooting: Rectify the fault based on the acceptance criteria.

Monthly

4

Cabinet air exhaust vent

The upper air exhaust vent of the lithium battery cabinet is not blocked.

• Check method: visual inspection
• Troubleshooting: Rectify the fault based on the acceptance criteria.

Monthly

5

Metal scraps in the cabinet

There is no copper scrap or other conductive foreign matter in the cabinet.

• Check method: visual inspection
• Troubleshooting: Rectify the fault based on the acceptance criteria.

Monthly

6

Fire extinguisher cylinder status

The pointer of the pressure gauge on the front door is not obviously lower than the initial position. If the pressure decreases, gas leakage occurs.

• Check method: visual inspection
• Troubleshooting: Contact technical support.

Monthly

7

Cabinet ground cables

The ground cables of the lithium battery cabinet are secured to the power distribution ground bar, and the screws are tightened.

• Check method: visual inspection
• Troubleshooting: Tighten the screws to a torque of 47 N·m.

Annually

8

Power cables and terminals

Screws are tightened. The insulation layers of cables are intact and terminals are free from black marks and noticeable sparks.

• Check method: visual inspection
• Troubleshooting: Replace the cables and tighten the loose screws.

Annually

9

Battery connection reliability check (recommended)

• When battery strings are powered off, check the connection of copper bars and communications/sampling terminals for each battery module from positive terminals (and neutral terminals if any) to negative terminals.
• In copper bar check, use a torque wrench to check the tightening torque for each battery screw. The torque meets the requirements of the battery manufacturer. After checking that the battery screws meet the requirements, mark the screws for later check.

• Inspection method: (1) Visual inspection. (2) Verify. After the device is powered off, use an insulated torque wrench to verify the torque of screws.
• Troubleshooting: Rectify the fault based on the acceptance criteria.

Annually

1

Battery running status

The operating status displayed on the SmartLi LCD is charging or discharging, and no fault or alarm information is displayed.

• Check method: Visual inspection. Check the status displayed on the SmartLi LCD.
• Troubleshooting: View the alarm information on the SmartLi LCD and handle the alarm.

Monthly

2

Indicators on the panel of the BCU

The green indicator is on, and the yellow (ALARM) and red (FAULT) indicators are off.

• Check method: visual inspection
• Troubleshooting: View the alarm information on the SmartLi LCD and handle the alarm.

Monthly

3

Battery SOC

Charge the battery continuously for at least one week and record the battery SOC (normally the SOC is 100%).

• Check method: Visual inspection. Check the SOC of each module on the SmartLi LCD.
• Troubleshooting: Charge the battery until the SOC is 100%.

Monthly

4

Shallow discharge test (recommended)

During the shallow discharge test, no fault or alarm is displayed on the UPS and SmartLi LCDs.

• Check method: Perform a shallow discharge test by referring to Shallow Discharge Test and check the alarm information on the UPS and SmartLi LCDs.
• Troubleshooting: View the alarm information on the UPS and SmartLi LCDs and handle the alarm.

Quarterly

5

Capacity test (recommended)

During the capacity test, no fault or alarm is displayed on the UPS and SmartLi LCDs.

• Check method: Perform a capacity test by referring to Capacity Test and check the alarm information on the UPS and SmartLi LCDs.
• Troubleshooting: View the alarm information on the UPS and SmartLi LCDs and handle the alarm.

Annually