Walrus G3 Pro 44kWh All-In-One Battery Storage System
The Walrus G3 Pro 44kWh is a comprehensive home energy storage and inverter system designed for grid-tied and off-grid applications. It delivers reliable backup power during outages, enables optimized charge/discharge cycles to reduce energy costs, and supports 90–230V PV solar input up to 11 kW. It can operate without solar, includes a built-in UPS for automatic blackout startup, and can be charged from a 240V 5 kW gas or diesel generator.
Performance and electrical specifications
- Inverter: 22 kVA (continuous)
- Battery capacity: 44 kWh (660 Ah)
- Nominal voltage: 66 V; system voltage AC 110/220 V
- Chemistry: NMC
- Charging voltage: 73–75 V; Max charge voltage: 75.6 V
- Operating voltage range: 54–74.7 V; Suggested low voltage cutoff: 54–60 V
- Cell configuration: 18S2P
- Max continuous discharge current: 250 A DC; Max discharge current: 75 A AC
- Max charge current: 50 A AC; MPPT charge controller: 5500 W × 2
- Charge/discharge temperature ranges: charging -20°C to 55°C; discharging -20°C to 55°C; storage -5°C to 35°C (up to 6 months)
- Dimensions and weight: W 24.41 in × D 15.4 in × H 36.24 in; weight 440 lb
Key features
- 7" touchscreen with Wi‑Fi monitoring
- Built-in portability wheels
- Programmable charge/discharge scheduling
- Off-grid compatibility with up to 11 kW solar input
- Assembled and shipped from California
Safety, installation and maintenance
Safety feature includes a built-in UPS for automatic start during blackouts. Regulatory certification details are not specified in the provided data. Installation considerations are limited to compatibility with 90–230 V solar inputs and generator charging outlined in the specifications; no detailed installation steps are provided.
Warranty and service
10-year warranty on all batteries. No additional service terms are specified in the data.
Bundle contents
- 72V 22K G3 PRO INVERTER-S
- WALRUS G3 EXTENSION PACK-S (x2)
- PV to BE175 Cable-S (x2)
- 50 Amp 10 Ft RV Extension Cable-S
- 4AWG BE175 to BE175 Battery Extension Cable-S (x2)
BatteryEvo 22kVa Walrus G3 Pro 44kWh
The Walrus G3 PRO is the perfect whole home generator for any grid-tied or off-grid setup. Keep the lights on during power outages and lower your electric bill up to 95%.
- Off-grid 90-230V PV 11kW solar compatible.
- Grid-tied solar battery compatible.
- Works on homes without solar.
- Built in UPS for auto start during blackouts.
- Can charge with 240V 5kW gas/diesel generator.
- 10YR warranty on all batteries
- Assembled and shipped out of CA
Included in this bundle:
- 1.
72V 22K G3 PRO INVERTER-S (x1) - 2.
WALRUS G3 EXTENSION PACK-S (x2) - 3.
PV to BE175 Cable-S (x2) - 4.
50 Amp 10 Ft RV Extension Cable-S (x1) - 5.
4AWG BE175 to BE175 Battery Extension Cable-S (x2)
Product information:
The BatteryEVO 44kWh WALRUS G3 Pro All-in-One System integrates a 22kVA inverter and 11kW solar charger for seamless home or business energy management. Built for off-grid applications, it ensures high-capacity, reliable power. Real-time monitoring and flexible input options make it ideal for optimizing solar and backup setups.
➤ 7" touchscreen display with Wi-Fi monitoring
➤ Built-in easy portability wheels
➤ Programmable charge/discharge scheduling
➤ 10-year warranty batteries
| System Voltage | AC110V/220V |
| Nominal Voltage | 66 V |
| Chemistry | NMC |
| kWh Capacity | 44 kWh |
| Ah Capacity | 660 Ah |
| Charging Voltage | 73V - 75V |
| Max Charge Voltage | 75.6 V |
| Operating Voltage Range | 54V - 74.7V |
| Suggested Low Voltage Cutoff | 54V - 60V |
| Cell Configuration | 18S2P |
| Max Continuous Discharge Current | 250A DC x (G3 battery connected to the inverter) |
| Max Continuous Power | 22 kVA |
| Max Discharge Peak Current | 75A AC |
| Max Charge Current | 50A AC |
| MPPT Charge Controller | 5500W * 2 |
| Charge Temperature Range | -20°C (-4°F) / 55°C (131°F) |
| Discharge Temperature Range | -20°C (-4°F) / 55°C (131°F) |
| Optimal Discharge Temperature Range | 15°C (59°F) / 35°C (95°F) |
| Storage Temperature Range | -5°C (23°F) / 35°C (95°F) (Max 6 Months) |
| Weight | 440 lb |
| Depth | 15.4 in |
| Width | 24.41 in |
| Height | 36.24 in |
| System Voltage | AC110V/220V |
| Nominal Voltage | 66 V |
| Chemistry | NMC |
| kWh Capacity | 44 kWh |
| Ah Capacity | 660 Ah |
| Charging Voltage | 73V - 75V |
| Max Charge Voltage | 75.6 V |
| Operating Voltage Range | 54V - 74.7V |
| Suggested Low Voltage Cutoff | 54V - 60V |
| Cell Configuration | 18S2P |
| Max Continuous Discharge Current | 250A DC x (G3 battery connected to the inverter) |
| Max Continuous Power | 22 kVA |
| Max Discharge Peak Current | 75A AC |
| Max Charge Current | 50A AC |
| MPPT Charge Controller | 5500W * 2 |
| Charge Temperature Range | -20°C (-4°F) / 55°C (131°F) |
| Discharge Temperature Range | -20°C (-4°F) / 55°C (131°F) |
| Optimal Discharge Temperature Range | 15°C (59°F) / 35°C (95°F) |
| Storage Temperature Range | -5°C (23°F) / 35°C (95°F) (Max 6 Months) |
| Weight | 440 lb |
| Depth | 15.4 in |
| Width | 24.41 in |
| Height | 36.24 in |