Savant Power Storage 50
50000 Wh, 12500 W
Lion Energy 2i-4b
Home battery · Lion Vault. Specs from the manufacturer page (checked ).
The Lion Vault 2i-4b is a 57.2 kWh standalone home battery with 24 kW AC output, built from LiFePO4 batteries and Sanctuary 3 hybrid inverters in one pre-assembled enclosure. When the grid goes down, it automatically keeps critical loads such as refrigeration, lighting, HVAC and Wi-Fi running. It accepts up to 36 kW of solar input and works on-grid or off-grid.
View at Lion Energy →Sponsored link; we may earn a commission.
Capacity
57200Wh
Continuous
24000W
Solar input
36000W
Chemistry
LiFePO4
Expandable
Yes
Weight
1017.4kg
Key features
- 57.2 kWh nominal capacity from four Sanctuary 3 batteries at 14.3 kWh each (LiFePO4)
- 24 kW AC output with a 100 A rated output current, from two Sanctuary 3 inverters rated 12 kVA each
- 36 kW maximum solar input
- Automatic outage detection and backup for critical loads
- Solar- and generator-ready; works on-grid or off-grid
- Essential loads can be prioritized and battery settings adjusted from the mobile app
- Max efficiency 96.5%; NEMA 3R / Type 3R enclosure, lockable by key
What it is for
- home backup
Specifications
| Capacity | 57200 Wh |
|---|---|
| Continuous output | 24000 W |
| Solar input | 36000 W |
| Expandable | Yes |
| Battery chemistry | LiFePO4 |
| AC output voltage | 120V / 240V Split-Phase |
| Weight | 1017.4 kg (2243.0 lb) |
| Dimensions | 148.0 × 129.5 × 170.8 cm (58.3 × 51.0 × 67.2 in) |
From the Lion Energy page. Values the manufacturer does not publish are left out.
How long it runs common appliances
| Appliance | Watts | Runs? | Hours |
|---|---|---|---|
| Refrigerator (with freezer) | 120 W (600 start) | yes | 44.9 days |
| Chest freezer | 100 W (500 start) | yes | 62.9 days |
| CPAP (no humidifier) | 35 W (40 start) | yes | 53.9 days |
| Gas boiler (pump + controls) | 120 W (300 start) | yes | 31.5 days |
| Wi-Fi router + modem/ONU | 12 W | yes | 157.3 days |
| Starlink (standard dish) | 60 W (100 start) | yes | 31.5 days |
| TV 50" | 75 W | yes | 25.2 days |
| Sump pump 1/2 HP | 920 W (2150 start) | yes | 49 h |
| Well pump 1/2 HP | 880 W (2000 start) | yes | 51 h |
| Space heater 1500 W | 1500 W | yes | 43 h |
Assumes 88 % inverter efficiency, 90 % usable capacity and typical duty cycles. Build your own list in the calculator.
Similar home battery systems
Connection and wiring
Follow the diagrams in the Lion Energy manual. Connecting to a home panel needs a transfer switch or interlock and a licensed electrician.
Error codes and troubleshooting
We found no error-code table in this manual. Its troubleshooting section is the reference.
FAQ
How long will the Lion Energy 2i-4b run a refrigerator?
About 1079 hours for a typical 120 W refrigerator that runs 35 % of the time, after inverter and depth-of-discharge losses.
Can the Lion Energy 2i-4b start a sump pump or well pump?
Starting surge matters more than running watts: this unit is rated 24000 W output (no separate peak published). That covers a typical 1/2 HP sump pump (about 2150 W to start). Use the calculator with your exact pump.