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Eleven Energy Galvani Stackable Battery Base and Junction Box – Required per Stack, 35mm² Cable, RS485, IP65
Eleven Energy Galvani Stackable Battery Base and Junction Box – Required per Stack, 35mm² Cable, RS485, IP65
The Eleven Energy Galvani Stackable Battery Base and Junction Box is the required electrical and structural base unit for every Galvani battery stack. One set must be ordered for each stack of up to 4 Galvani ELB-4.5-02 battery modules — it is not included with the battery modules and must be ordered separately. The Junction Box houses the stack circuit breaker, the main DC busbar connecting all modules to the inverter, and the RS485/CAN communication interface. It comes with a pre-installed 35mm² power cable set (2m) — rated for up to 200A — ready to connect directly to the Eleven Energy Hybrid Inverter's battery terminals. The accessory box includes all hardware for installation: data cable, waterproof glands, grounding cable, wall brackets and fixings. The Battery Base (640 × 80 × 250mm) with four M12 adjustable feet provides a stable, level foundation for the stack. IP65 rated throughout.
35 mm²
Power Cable (2 m)
200 A
Max Busbar Current
IP65
Weather Sealed
RS485
/ CAN Comms
1 per
Stack Required
4×
Battery Modules Max
⚠ Inverter Compatibility: This Base and Junction Box is designed for use with Eleven Energy Galvani ELB-4.5-02 battery modules and Eleven Energy Hybrid Inverters only. It is not compatible with battery modules or inverters from other manufacturers.
ℹ Installation: Must be installed by a qualified electrician accredited for battery storage systems, in accordance with BS 7671 (18th Edition). An earth bond must be installed between the battery stack and the inverter. Do not connect battery cables while the inverter is energised. The mounting wall must be fire-resistant with a minimum thickness of 100mm.
Key Features
One Junction Box Required per Stack — the Electrical Hub of the System
The Junction Box is the mandatory electrical centre for every Galvani battery stack. It provides the main busbar connecting all battery modules in a stack to the inverter, houses the integrated circuit breaker for the entire stack, and routes the RS485/CAN communication cable between the battery modules and the Eleven Energy hybrid inverter. A single Junction Box supports up to 4 Galvani battery modules (18 kWh per stack). One Junction Box is required per stack — it cannot be shared across multiple stacks.
Required per stackUp to 4 modules18 kWh max
Pre-Installed 35mm² Power Cable — Ready to Connect to Inverter
The Junction Box comes with a factory-fitted 35mm² inverter-battery power cable set (2 metres) — the positive and negative DC power leads that connect the battery stack to the inverter's battery terminals. Positive and negative cables must be connected to corresponding terminals on the inverter with a locking torque of 3.5 N·m. The large 35mm² cross-section is sized to carry the full 200A multi-module discharge current without voltage drop or thermal issues.
35mm² pre-installed2m length200A rated3.5 N·m torque
Battery Base — Floor-Standing Stability and Levelling
The Battery Base (640 × 80 × 250mm, 6 kg) is included with the Junction Box and forms the structural foundation of the battery stack. Four M12 adjustable feet allow the stack to be levelled on uneven floors. The base locates the bottom battery module securely and sets the stack at the correct height for cable routing through the Junction Box. Four M6 expansion bolts (80mm) and wall mount brackets are provided for securing the stack to the wall for anti-tip stability.
Included with Junction BoxAdjustable feetWall brackets included
Built-In Circuit Breaker — Stack-Level Overcurrent Protection
The Junction Box incorporates an integrated circuit breaker that protects the entire stack. At startup, the inverter-battery power cable is connected first with the circuit breaker in the OFF position; each battery module is then individually switched on via its ON/OFF button, and only once all modules are running is the Junction Box circuit breaker moved to ON. Shutdown follows the reverse sequence — circuit breaker first, then individual modules. This sequenced operation protects both the inverter and the battery modules.
Integrated circuit breakerStack protection
RS485/CAN Communication — Data Cable and Waterproof Glands Included
The accessory box includes a 2m data cable for connecting the Junction Box RS485/CAN communication port to the Eleven Energy inverter's battery communication interface. Three waterproof glands are included for sealing the data cable entry points — essential for maintaining the IP65 rating of the installation in outdoor settings. Any unused RS485 IN or OUT ports must have their caps fitted and tightened.
Data cable included3× waterproof glandsRS485 / CAN
Grounding Cable Included — Earth Bond to Inverter
A 12 AWG (2m) grounding cable is included in the accessory box. The installation manual requires an earth bond between the battery stack and the inverter. The grounding cable connects from the GND terminal on the Junction Box to the inverter's earth/grounding point. This is a safety-critical connection and must not be omitted.
12 AWG grounding cableEarth bond required
Technical Specification (Eleven Energy Datasheet V1.0 — December 2025)
| Junction Box | |
| Dimensions (W × H × D) | 640 × 220 × 250 mm |
| Weight | 11.5 kg |
| IP Rating | IP65 |
| Integrated Circuit Breaker | Yes — stack-level |
| Power Cable (pre-installed) | 35 mm², 2 m, positive and negative |
| Max Busbar Current | 200 A (multi-module stack) |
| Communication Ports | RS485-IN and RS485-OUT (CAN) |
| Inverter Communication Port | RS485 / CAN |
| USB Diagnosis Port | USB Type-C (battery diagnosis) |
| Battery Base | |
| Dimensions (W × H × D) | 640 × 80 × 250 mm |
| Weight | 6 kg |
| Adjustable Feet | 4× M12 adjustable feet (included) |
| Accessory Box Contents | |
| Data Cable | 1× RS485/CAN data cable, 2 m |
| Waterproof Glands | 3× (for data cable terminals) |
| Grounding Cable | 1× 12 AWG, 2 m |
| Wall Mount Brackets | 4 sets |
| Battery Interlink Brackets | 2× (for stacking modules) |
| Adjustable Feet | 4× M12 |
| M6 Expansion Bolts | 4× 80 mm |
| M5 Hex Screws | 4× 16 mm |
| M5 Flat Head Screws | 12× 12 mm |
| Compatibility | |
| Compatible Batteries | Eleven Energy Galvani ELB-4.5-02 |
| Max Modules per Stack | 4 (18 kWh) |
| Compatible Inverters | Eleven Energy Hybrid Inverters only |
⚠ Safety: Do not connect battery modules in series. Do not install upside down or sideways. In the event of fire, use dry powder extinguishers only. If the ALM indicator is constantly lit, shut the system down immediately and contact Eleven Energy technical support.
Frequently Asked Questions
Related Products
Eleven Energy Galvani 4.5 kWh Battery Module
The stackable battery module — up to 4 per stack
Eleven Energy 6 kW Hybrid Inverter
Required inverter — Galvani-compatible only
$232.41
Original: $664.04
-65%Eleven Energy Galvani Stackable Battery Base and Junction Box – Required per Stack, 35mm² Cable, RS485, IP65—
$664.04
$232.41More Images
Eleven Energy Galvani Stackable Battery Base and Junction Box – Required per Stack, 35mm² Cable, RS485, IP65
The Eleven Energy Galvani Stackable Battery Base and Junction Box is the required electrical and structural base unit for every Galvani battery stack. One set must be ordered for each stack of up to 4 Galvani ELB-4.5-02 battery modules — it is not included with the battery modules and must be ordered separately. The Junction Box houses the stack circuit breaker, the main DC busbar connecting all modules to the inverter, and the RS485/CAN communication interface. It comes with a pre-installed 35mm² power cable set (2m) — rated for up to 200A — ready to connect directly to the Eleven Energy Hybrid Inverter's battery terminals. The accessory box includes all hardware for installation: data cable, waterproof glands, grounding cable, wall brackets and fixings. The Battery Base (640 × 80 × 250mm) with four M12 adjustable feet provides a stable, level foundation for the stack. IP65 rated throughout.
35 mm²
Power Cable (2 m)
200 A
Max Busbar Current
IP65
Weather Sealed
RS485
/ CAN Comms
1 per
Stack Required
4×
Battery Modules Max
⚠ Inverter Compatibility: This Base and Junction Box is designed for use with Eleven Energy Galvani ELB-4.5-02 battery modules and Eleven Energy Hybrid Inverters only. It is not compatible with battery modules or inverters from other manufacturers.
ℹ Installation: Must be installed by a qualified electrician accredited for battery storage systems, in accordance with BS 7671 (18th Edition). An earth bond must be installed between the battery stack and the inverter. Do not connect battery cables while the inverter is energised. The mounting wall must be fire-resistant with a minimum thickness of 100mm.
Key Features
One Junction Box Required per Stack — the Electrical Hub of the System
The Junction Box is the mandatory electrical centre for every Galvani battery stack. It provides the main busbar connecting all battery modules in a stack to the inverter, houses the integrated circuit breaker for the entire stack, and routes the RS485/CAN communication cable between the battery modules and the Eleven Energy hybrid inverter. A single Junction Box supports up to 4 Galvani battery modules (18 kWh per stack). One Junction Box is required per stack — it cannot be shared across multiple stacks.
Required per stackUp to 4 modules18 kWh max
Pre-Installed 35mm² Power Cable — Ready to Connect to Inverter
The Junction Box comes with a factory-fitted 35mm² inverter-battery power cable set (2 metres) — the positive and negative DC power leads that connect the battery stack to the inverter's battery terminals. Positive and negative cables must be connected to corresponding terminals on the inverter with a locking torque of 3.5 N·m. The large 35mm² cross-section is sized to carry the full 200A multi-module discharge current without voltage drop or thermal issues.
35mm² pre-installed2m length200A rated3.5 N·m torque
Battery Base — Floor-Standing Stability and Levelling
The Battery Base (640 × 80 × 250mm, 6 kg) is included with the Junction Box and forms the structural foundation of the battery stack. Four M12 adjustable feet allow the stack to be levelled on uneven floors. The base locates the bottom battery module securely and sets the stack at the correct height for cable routing through the Junction Box. Four M6 expansion bolts (80mm) and wall mount brackets are provided for securing the stack to the wall for anti-tip stability.
Included with Junction BoxAdjustable feetWall brackets included
Built-In Circuit Breaker — Stack-Level Overcurrent Protection
The Junction Box incorporates an integrated circuit breaker that protects the entire stack. At startup, the inverter-battery power cable is connected first with the circuit breaker in the OFF position; each battery module is then individually switched on via its ON/OFF button, and only once all modules are running is the Junction Box circuit breaker moved to ON. Shutdown follows the reverse sequence — circuit breaker first, then individual modules. This sequenced operation protects both the inverter and the battery modules.
Integrated circuit breakerStack protection
RS485/CAN Communication — Data Cable and Waterproof Glands Included
The accessory box includes a 2m data cable for connecting the Junction Box RS485/CAN communication port to the Eleven Energy inverter's battery communication interface. Three waterproof glands are included for sealing the data cable entry points — essential for maintaining the IP65 rating of the installation in outdoor settings. Any unused RS485 IN or OUT ports must have their caps fitted and tightened.
Data cable included3× waterproof glandsRS485 / CAN
Grounding Cable Included — Earth Bond to Inverter
A 12 AWG (2m) grounding cable is included in the accessory box. The installation manual requires an earth bond between the battery stack and the inverter. The grounding cable connects from the GND terminal on the Junction Box to the inverter's earth/grounding point. This is a safety-critical connection and must not be omitted.
12 AWG grounding cableEarth bond required
Technical Specification (Eleven Energy Datasheet V1.0 — December 2025)
| Junction Box | |
| Dimensions (W × H × D) | 640 × 220 × 250 mm |
| Weight | 11.5 kg |
| IP Rating | IP65 |
| Integrated Circuit Breaker | Yes — stack-level |
| Power Cable (pre-installed) | 35 mm², 2 m, positive and negative |
| Max Busbar Current | 200 A (multi-module stack) |
| Communication Ports | RS485-IN and RS485-OUT (CAN) |
| Inverter Communication Port | RS485 / CAN |
| USB Diagnosis Port | USB Type-C (battery diagnosis) |
| Battery Base | |
| Dimensions (W × H × D) | 640 × 80 × 250 mm |
| Weight | 6 kg |
| Adjustable Feet | 4× M12 adjustable feet (included) |
| Accessory Box Contents | |
| Data Cable | 1× RS485/CAN data cable, 2 m |
| Waterproof Glands | 3× (for data cable terminals) |
| Grounding Cable | 1× 12 AWG, 2 m |
| Wall Mount Brackets | 4 sets |
| Battery Interlink Brackets | 2× (for stacking modules) |
| Adjustable Feet | 4× M12 |
| M6 Expansion Bolts | 4× 80 mm |
| M5 Hex Screws | 4× 16 mm |
| M5 Flat Head Screws | 12× 12 mm |
| Compatibility | |
| Compatible Batteries | Eleven Energy Galvani ELB-4.5-02 |
| Max Modules per Stack | 4 (18 kWh) |
| Compatible Inverters | Eleven Energy Hybrid Inverters only |
⚠ Safety: Do not connect battery modules in series. Do not install upside down or sideways. In the event of fire, use dry powder extinguishers only. If the ALM indicator is constantly lit, shut the system down immediately and contact Eleven Energy technical support.
Frequently Asked Questions
Related Products
Eleven Energy Galvani 4.5 kWh Battery Module
The stackable battery module — up to 4 per stack
Eleven Energy 6 kW Hybrid Inverter
Required inverter — Galvani-compatible only
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Eleven Energy Galvani Stackable Battery Base and Junction Box is the required electrical and structural base unit for every Galvani battery stack. One set must be ordered for each stack of up to 4 Galvani ELB-4.5-02 battery modules — it is not included with the battery modules and must be ordered separately. The Junction Box houses the stack circuit breaker, the main DC busbar connecting all modules to the inverter, and the RS485/CAN communication interface. It comes with a pre-installed 35mm² power cable set (2m) — rated for up to 200A — ready to connect directly to the Eleven Energy Hybrid Inverter's battery terminals. The accessory box includes all hardware for installation: data cable, waterproof glands, grounding cable, wall brackets and fixings. The Battery Base (640 × 80 × 250mm) with four M12 adjustable feet provides a stable, level foundation for the stack. IP65 rated throughout.
35 mm²
Power Cable (2 m)
200 A
Max Busbar Current
IP65
Weather Sealed
RS485
/ CAN Comms
1 per
Stack Required
4×
Battery Modules Max
⚠ Inverter Compatibility: This Base and Junction Box is designed for use with Eleven Energy Galvani ELB-4.5-02 battery modules and Eleven Energy Hybrid Inverters only. It is not compatible with battery modules or inverters from other manufacturers.
ℹ Installation: Must be installed by a qualified electrician accredited for battery storage systems, in accordance with BS 7671 (18th Edition). An earth bond must be installed between the battery stack and the inverter. Do not connect battery cables while the inverter is energised. The mounting wall must be fire-resistant with a minimum thickness of 100mm.
Key Features
One Junction Box Required per Stack — the Electrical Hub of the System
The Junction Box is the mandatory electrical centre for every Galvani battery stack. It provides the main busbar connecting all battery modules in a stack to the inverter, houses the integrated circuit breaker for the entire stack, and routes the RS485/CAN communication cable between the battery modules and the Eleven Energy hybrid inverter. A single Junction Box supports up to 4 Galvani battery modules (18 kWh per stack). One Junction Box is required per stack — it cannot be shared across multiple stacks.
Required per stackUp to 4 modules18 kWh max
Pre-Installed 35mm² Power Cable — Ready to Connect to Inverter
The Junction Box comes with a factory-fitted 35mm² inverter-battery power cable set (2 metres) — the positive and negative DC power leads that connect the battery stack to the inverter's battery terminals. Positive and negative cables must be connected to corresponding terminals on the inverter with a locking torque of 3.5 N·m. The large 35mm² cross-section is sized to carry the full 200A multi-module discharge current without voltage drop or thermal issues.
35mm² pre-installed2m length200A rated3.5 N·m torque
Battery Base — Floor-Standing Stability and Levelling
The Battery Base (640 × 80 × 250mm, 6 kg) is included with the Junction Box and forms the structural foundation of the battery stack. Four M12 adjustable feet allow the stack to be levelled on uneven floors. The base locates the bottom battery module securely and sets the stack at the correct height for cable routing through the Junction Box. Four M6 expansion bolts (80mm) and wall mount brackets are provided for securing the stack to the wall for anti-tip stability.
Included with Junction BoxAdjustable feetWall brackets included
Built-In Circuit Breaker — Stack-Level Overcurrent Protection
The Junction Box incorporates an integrated circuit breaker that protects the entire stack. At startup, the inverter-battery power cable is connected first with the circuit breaker in the OFF position; each battery module is then individually switched on via its ON/OFF button, and only once all modules are running is the Junction Box circuit breaker moved to ON. Shutdown follows the reverse sequence — circuit breaker first, then individual modules. This sequenced operation protects both the inverter and the battery modules.
Integrated circuit breakerStack protection
RS485/CAN Communication — Data Cable and Waterproof Glands Included
The accessory box includes a 2m data cable for connecting the Junction Box RS485/CAN communication port to the Eleven Energy inverter's battery communication interface. Three waterproof glands are included for sealing the data cable entry points — essential for maintaining the IP65 rating of the installation in outdoor settings. Any unused RS485 IN or OUT ports must have their caps fitted and tightened.
Data cable included3× waterproof glandsRS485 / CAN
Grounding Cable Included — Earth Bond to Inverter
A 12 AWG (2m) grounding cable is included in the accessory box. The installation manual requires an earth bond between the battery stack and the inverter. The grounding cable connects from the GND terminal on the Junction Box to the inverter's earth/grounding point. This is a safety-critical connection and must not be omitted.
12 AWG grounding cableEarth bond required
Technical Specification (Eleven Energy Datasheet V1.0 — December 2025)
| Junction Box | |
| Dimensions (W × H × D) | 640 × 220 × 250 mm |
| Weight | 11.5 kg |
| IP Rating | IP65 |
| Integrated Circuit Breaker | Yes — stack-level |
| Power Cable (pre-installed) | 35 mm², 2 m, positive and negative |
| Max Busbar Current | 200 A (multi-module stack) |
| Communication Ports | RS485-IN and RS485-OUT (CAN) |
| Inverter Communication Port | RS485 / CAN |
| USB Diagnosis Port | USB Type-C (battery diagnosis) |
| Battery Base | |
| Dimensions (W × H × D) | 640 × 80 × 250 mm |
| Weight | 6 kg |
| Adjustable Feet | 4× M12 adjustable feet (included) |
| Accessory Box Contents | |
| Data Cable | 1× RS485/CAN data cable, 2 m |
| Waterproof Glands | 3× (for data cable terminals) |
| Grounding Cable | 1× 12 AWG, 2 m |
| Wall Mount Brackets | 4 sets |
| Battery Interlink Brackets | 2× (for stacking modules) |
| Adjustable Feet | 4× M12 |
| M6 Expansion Bolts | 4× 80 mm |
| M5 Hex Screws | 4× 16 mm |
| M5 Flat Head Screws | 12× 12 mm |
| Compatibility | |
| Compatible Batteries | Eleven Energy Galvani ELB-4.5-02 |
| Max Modules per Stack | 4 (18 kWh) |
| Compatible Inverters | Eleven Energy Hybrid Inverters only |
⚠ Safety: Do not connect battery modules in series. Do not install upside down or sideways. In the event of fire, use dry powder extinguishers only. If the ALM indicator is constantly lit, shut the system down immediately and contact Eleven Energy technical support.
Frequently Asked Questions
Related Products
Eleven Energy Galvani 4.5 kWh Battery Module
The stackable battery module — up to 4 per stack
Eleven Energy 6 kW Hybrid Inverter
Required inverter — Galvani-compatible only
