I. Packing List
Note: This guide briefly describes required installation steps. For detailed information, refer to the User Manual delivered with the BMS.
- BMS (GWU-BAT-BMS): 1 unit
- User Manual: 1 unit
- Battery Module (GWU-BAT-5.0H): 1 unit
- Transverse Plate: 1 unit
- Expansion Screw: 6 units
- Adjustment Screw: 4 units
- M5*8 Countersunk Head Screw: 4 units
- Washer: 6 units
- Wall Bracket: 2 units
- Expansion Bolt: 4 units
- Platen (2 holes): 2 units
- Washer: 2 units
- Base Support: 2 units
- M5*20 Countersunk Screw: 6 units
- Self-tapping Screw: 6 units
- Base for BAT50-G2 Battery:
- Tapping Screw: 2 units
- M5*10 Phillips-head Screw: 10 units
- Platen (3 holes): 2 units
- Quick Installation Guide: 1 unit
- Base: 1 unit
II. Installation Prerequisites
Ensure the installation location meets the following conditions:
- The building is designed to withstand earthquakes.
- The location is far from the sea, over 3280.84 ft (1000 m), to avoid salt water and humidity.
- The floor is flat and level.
- There are no flammable or explosive materials within a minimum of 2.95 ft (0.9 m).
- The ambience is shady and cool, away from heat and direct sunlight.
- The temperature and humidity remain at a constant level.
- There is minimal dust and dirt in the area.
- There are no corrosive gases present, including ammonia and acid vapor.
- Where charging and discharging, the ambient temperature ranges from 32°F (0°C) to 113°F (45°C).
Note: In practice, installation requirements may differ based on environment and location. Always follow local laws and standards.
Note: The Greenworks battery module is rated at IP65, allowing outdoor installation. However, if installed outdoors, the battery pack must not be exposed to direct sunlight and moisture.
Note: If the ambient temperature exceeds the operating range, the battery pack will stop running to protect itself. The optimal temperature range for operation is 14°F (-10°C) to 122°F (50°C). Frequent exposure to harsh temperatures may deteriorate its performance and lifetime.
Note: For the first installation, the interval among manufacture dates of battery modules shall not exceed 3 months.
III. Overview (Floor Mounting)
Please reserve enough distance from the equipment to the ceiling/ground for capacity expansion. The following schemes illustrate configurations:
Scheme A
Configuration: 1 BMS, 2 Battery Modules. Total Width: 31.81 in. (808 mm). Clearance: Minimum 11.81 in. (300 mm) to the left and right sides.
Scheme B
Configuration: 1 BMS, 4 Battery Modules. Total Width: 43.62 in. (1,108 mm). Clearance: Minimum 11.81 in. (300 mm) to the left and right sides.
Scheme C
Configuration: 1 BMS, 6 Battery Modules. Total Width: 55.43 in. (1,408 mm). Clearance: Minimum 11.81 in. (300 mm) to the left and right sides.
IV. Steps (Floor Mounting)
Please reserve enough distance from the equipment to the ceiling/ground for capacity expansion. Take Scheme C as an example.
Step 1: Place Base
- Remove the dust cover.
- Insert M8*85 screws from the bottom of the Base. Ensure the Base is level.
Note: Use a spirit level to measure the sides of the Base. If not level, adjust the Adjustment Screws with a torque wrench.
Step 2: Position Base
Locate the Base 1.57 in. (40 mm) away from the wall. Accurately mark the location of the Base on both sides with a pen.
Step 3: Place Battery Module on Base
- Remove the top and bottom dust covers.
- Place the Battery Module onto the Base.
- Fix the Platen (2 holes) using M5*10 Phillips-head screws. Secure M5*10 screws at both sides with a torque of 2.2-2.5 N·m.
Note: If the Base shifts after placing a Battery Module, move it back to its original location according to the mark.
Step 4: Place Additional Battery Modules
Place two Battery Modules in turn. Secure both left and right sides using M5*10 countersunk screws (Torque: 2.2-2.5 N·m). Secure the Platen and M5*10 screws immediately after placing each Battery Module.
Step 5: Prepare for Wall Bracket Attachment
- Attach an M5*10 screw to the Wall Bracket, but do not tighten it yet.
- Place the Wall Bracket against the wall, aligning its holes with the holes on the Battery Module. Use a spirit level to ensure it is even.
- Accurately mark the location of the Wall Bracket on both sides.
- Draw circles according to the actual stub spacing.
- Remove the Wall Bracket. Drill two holes (at least 3.54 in. / 90 mm deep) using a Drill bit (Ø 0.39 in. / 10 mm).
Note: An electric drill dust collector is recommended.
Step 6: Place Expansion Bolts
Insert Expansion Bolts into the drilled holes.
Step 7: Secure Wall Bracket
Place the Wall Bracket on the wall where the mark was drawn. Secure it using Tapping Screws and Washers.
Step 8: Place Fourth Battery Module
(This step is part of a sequence for configurations with more than two modules, referring to steps 5, 6, 7, and 8 for placement and securing).
Step 9: Fix Platen (3 holes)
Fix the Platen (3 holes) and tighten M5*10 screws on both sides (Torque: 2.2-2.5 N·m).
Step 10: Prepare for BMS Wall Bracket Attachment
- Attach an M5*10 screw to the Wall Bracket, but do not tighten it yet.
- Place the Wall Bracket against the wall, aligning its holes with the holes on the Battery Module. Use a spirit level to ensure it is even.
- Accurately mark the location of the Wall Bracket on both sides with a pen.
- Draw circles according to the actual stub spacing.
- Remove the Wall Bracket. Drill two holes (at least 3.54 in. / 90 mm deep) using a Drill bit (Ø 0.39 in. / 10 mm).
- Place Expansion Bolts.
- Secure Wall Brackets using Tapping Screws and Washers. Refer to Steps 5, 6, 7, and 8 for the process.
Note: An electric drill dust collector is recommended.
Step 11: Place BMS on Battery Module
- Remove the bottom dust cover.
- Place the BMS. Fix the Platen (3 holes) on both sides and tighten M5*10 screws (Torque: 2.2-2.5 N·m). Refer to Step 9.
Note: The holes on the BMS are for securing the inverter. For details, refer to the GWU-GreenE User Manual.
V. Overview (Wall Mounting)
Please reserve enough distance from the equipment to the ceiling/ground for capacity expansion. The following schemes illustrate configurations:
Scheme A
Configuration: 1 BMS, 2 Battery Modules. Total Width: 31.81 in. (808 mm). Clearance: Minimum 11.81 in. (300 mm) to the left and right sides. Minimum 23.62 in. (600 mm) to the ground (reserved for battery expansion).
Scheme B
Configuration: 1 BMS, 4 Battery Modules. Total Width: 43.62 in. (1,108 mm). Clearance: Minimum 11.81 in. (300 mm) to the left and right sides. Clearance to ground: Greater than 11.81 in. (300 mm) (reserved for battery expansion).
Scheme C
Configuration: 1 BMS, 6 Battery Modules. Total Width: 55.43 in. (1,408 mm). Clearance: Minimum 11.81 in. (300 mm) to the left and right sides. Ground clearance to be decided according to local regulations.
VI. Steps (Wall Mounting)
Please reserve enough distance from the equipment to the ceiling/ground for capacity expansion. Take Scheme C as an example.
Step 1: Install Transverse Plate to Base Support
There are two ways to install the Transverse Plate to the Base Support, depending on stub spacing:
- (a) 28 in. (711.20 mm) or 32 in. (812.80 mm)
- (b) 20 in. (508.00 mm) or 24 in. (609.60 mm)
- Insert the Transverse Plate into the Base Support.
- Secure the Transverse Plate and Base Support using screws (2x M5*8 countersunk head screw) with a torque of 2.2-2.5 N·m.
Step 2: Position Transverse Plate
- Place the assembled Transverse Plate and Base Support on the wall. Use the cylindrical plastic bubble spirit level on the Transverse Plate; if the bubble is not centered, slightly bow the plate to achieve horizontal alignment.
- Determine the position of the holes.
- Mark the hole positions with a pen.
- Remove the assembly and drill four holes (at least 3.54 in. / 90 mm deep). Use a Drill bit: Ø 0.47 in. (12 mm) for concrete walls, or Ø 0.31 in. (8 mm) for solid wood walls.
Step 3: Secure Base Support
- Place the assembled Transverse Plate and Base Support onto the wall (or solid wood stud).
- Attach the Expansion Screw to the holes, but do not tighten yet.
- Check if the bubble spirit level is horizontal.
- Hammer the Expansion Screws with a rubber mallet (except for solid wood walls) and then tighten them with a torque wrench.
Note: For solid wood walls, directly tighten screws with a torque wrench instead of hammering. The bubble spirit level on the Transverse Plate is an auxiliary tool; also use a separate spirit level to ensure the plate is even.
Step 4: Place Base
- Remove the dust cover.
- Place the Base onto the Base Support. Secure both left and right sides with screws (4x M5*20 countersunk screw) with a torque of 2.2-2.5 N·m.
Step 5: Place Battery Module on Base
- Remove the top and bottom dust covers.
- Place the Battery Module onto the Base.
- Fix the Platen (2 holes) using M5*10 Phillips-head screws. Secure M5*10 screws at both sides with a torque of 2.2-2.5 N·m.
Step 6: Place Additional Battery Modules
Place two Battery Modules in turn. Secure both left and right sides with screws (4x M5*20 countersunk screw) with a torque of 2.2-2.5 N·m. Secure the Platen and M5*10 screws immediately after placing each Battery Module.
Note: An electric drill dust collector is recommended.
Step 7: Prepare for Wall Bracket Attachment
- Attach an M5*10 screw to the Wall Bracket, but do not tighten it yet.
- Place the Wall Bracket against the wall, aligning its holes with the holes on the Battery Module. Use a spirit level to ensure it is even.
- Accurately mark the location of the Wall Bracket on both sides with a pen.
- Draw circles according to the actual stub spacing.
- Remove the Wall Bracket. Drill two holes (at least 3.54 in. / 90 mm deep) using a Drill bit (Ø 0.39 in. / 10 mm).
Step 8: Place Expansion Bolts
Insert Expansion Bolts into the two holes (Expansion Bolts are not required for solid wood walls).
Step 9: Secure Wall Bracket
Place the Wall Bracket on the wall where the mark was drawn. Secure the Wall Brackets on the wall using Tapping Screws and Washers.
Step 10: Place Fourth Battery Module
(This step is part of a sequence for configurations with more than two modules, referring to steps 7, 8, 9, and 10 for placement and securing).
Step 11: Fix Platen (3 holes)
Fix the Platen (3 holes) and secure M5*10 screws on both sides with a torque of 2.2-2.5 N·m.
Step 12: Prepare for BMS Wall Bracket Attachment
- Attach an M5*10 screw to the Wall Bracket, but do not tighten it yet.
- Place the Wall Bracket against the wall, aligning its holes with the holes on the Battery Module. Use a spirit level to ensure it is even.
- Accurately mark the location of the Wall Bracket on both sides with a pen.
- Draw circles according to the actual stub spacing.
- Remove the Wall Bracket. Drill two holes (at least 3.54 in. / 90 mm deep) using a Drill bit (Ø 0.39 in. / 10 mm).
- Place Expansion Bolts.
- Secure Wall Brackets using Tapping Screws and Washers. Refer to Steps 7, 8, 9, and 10 for the process.
Step 13: Place BMS on Battery Module
- Remove the bottom dust cover.
- Place the BMS. Fix the Platen (3 holes) on both sides and tighten M5*10 screws (Torque: 2.2-2.5 N·m). Refer to Step 11.
Note: The holes on the BMS are for securing the inverter. For details, refer to the GWU-GreenE User Manual.
VII. Wiring
Making a BMS Communication Cable
To ensure normal operation of the BMS and inverter, a BMS communication cable must be made before wiring. The specific definition of the communication cable is as follows:
- Sequence 1: (No specific pinout shown, likely reserved)
- Sequence 2: GND
- Sequence 3: /
- Sequence 4: BMS_H
- Sequence 5: BMS_L
- Sequence 6: /
- Sequence 7: A1
- Sequence 8: B1
The wire order of the communication cable is as follows:
- 1) Orange stripes on white
- 2) Orange
- 3) Green stripes on white
- 4) Blue
- 5) Blue stripes on white
- 6) Green
- 7) Brown stripes on white
- 8) Brown
Note: The BMS communication cable shall have a shield layer.
Before Wiring
- Unscrew the cap at the BMS clockwise.
- Unscrew the screws at BAT+ and BAT- respectively.
After Wiring
- Insert the orange power line into the orange socket.
- Insert the black power line into the black socket.
- Screw the communication line into the communication socket.
Note: Do not violently remove cables when they are locked.
VIII. Commissioning
Steps for commissioning are shown as follows:
- Press the left side door panel.
- Open the air switch's guard and toggle switch to ensure that the inverter charges the battery.
- Press the right side door panel.
- Press the button for 1 to 2 seconds, and then the system starts.
Black Start: Press the POWER button and hold it for 20 seconds; release the button after the four SOC indicators flash blue alternately. However, this is not recommended as it may cause the port to be charged, resulting in an electric shock.
Battery Management Notes:
- If batteries have not been used for more than 9 months, they must be charged to at least 50% SOC each time.
- For the first installation, the interval among manufacture dates of battery modules shall not exceed 3 months.
- If a battery is replaced or added for capacity expansion, each battery's SOC should be consistent, with a maximum SOC difference between ±5%.
- If users want to increase their battery system capacity, ensure the SOC of the existing system capacity is about 40%. The manufacture date of the new battery shall not exceed 6 months; if it exceeds 6 months, charge the new battery to around 40%.
- The equipment supports capacity expansion.
- Circumstances for increasing a battery module:
- For floor mounting, remove the inverter before increasing the battery module.
- For wall mounting, if the distance from the equipment to the ground is sufficient, do not remove the inverter; otherwise, the inverter shall be removed.