Big Battery 48V EG4 WallMount Indoor Battery

Introducing the game-changing 48V 14.3kWh WallMount Indoor Battery, the latest solution from the EG4 team for residential and commercial ESS. This UL-certified, wall-mountable battery ensures reliable, efficient power delivery for any home or business, allowing you to see massive lifetime savings on your utility costs, or achieve full grid independence!
This battery was designed with safety, longevity, and visibility in mind, with a lifespan of over 8000 cycles at 80% DoD. That’s 82.6MWh of lifetime production. This battery comes equipped with LiFePO4 cells, the safest chemistry on the market today, and a durable, IP20-rated casing. Plus, this unit’s intelligent BMS continuously monitors and records module and cell voltage, current, and temperature in real-time, in addition to a passive cell-balancing function, optimizing performance and ensuring long-lasting power, and an LCD touch screen display on the side of the unit allows you to stay up to the date on the status of your battery day in and day out. But that’s not all. . .
Not only does the WallMount Indoor Battery feature an automatic self-heating function and dual fire extinguishers for fail-safe protection in case of thermal runaway, but EG4 continues to innovate with an all-new emergency stop function. This optional ESS disconnect is capable of shutting down your entire power system at the press of a button, so should an emergency happen, you’ll always be prepared.
This battery serves as the foundation for EG4’s indoor ESS systems, but being equipped with full RS485 and CANBus protocols, you’re able to setup closed-loop communications with a wide range of inverters on the market today. It’s time to revolutionize how you power your home or business. Upgrade today with the 48V WallMount Indoor Battery from EG4!


Features







WALL-MOUNTABLE DESIGN


AUTOMATIC SELF-HEATING


TOUCH SCREEN LCD DISPLAY


PASSIVE CELL BALANCING


INTEGRATED 600A BUSBARS


DUAL INTERNAL FIRE ARRESTORS


EMERGENCY DISCONNECT FUNCTION


ZERO MAINTENANCE REQUIRED




Suitable For







RESIDENTIAL POWER SYSTEMS


HOME SOLAR SYSTEMS


CABINS & TINY HOMES


FAMILY HOMES & MANSIONS


OFF-GRID HOMESTEADS


EMERGENCY POWER


WHOLE HOME BACKUP


COMMERCIAL SYSTEMS


WHOLE OFFICE BACKUP


LEAD ACID REPLACEMENT





Tech Specs


BATTERY












System Voltage:
48V


Nominal Voltage:
51.2V


Chemistry:
LiFePO4


kWh Capacity:
14.3kWh


Ah Capacity:
280Ah


BMS Charging Voltage (Bulk/Absorb):
56V (±0.8V)


Rec. Charging Voltage (Bulk/Absorb):
56.2V (±0.2V)


Rec. Float Setting:
54V (±0.2V)


Rec. SoC Cutoff Setting:
20%


Max. Continuous Charge/Discharge Current:
200A


Rec. Charge Current:
60 - 160A


Rec. Discharge Current:
160A


Max Continuous Discharge Rate:
10240W








HEATER












Voltage:
56V


Power Consumption:
224W


Internal Temperature Cutoffs:
≤32ºF (On) | ≥41ºF (Off)








OPERATING ENVIRONMENT












Charging Temperature Range:
32ºF - 113ºF (0ºC - 45ºC)


Discharging Temperature Range:
-4ºF - 122ºF (-20ºC - 50ºC)


Storage Temperature Range:
-4ºF - 122ºF (-20ºC - 50ºC)


Protection Rating:
IP20


Communications:
RS485 | CANBus








DIMENSIONS












Weight:
282.2 lbs (128 kg)


Depth:
9.6 in (245 mm)


Width:
18.1 in (460 mm)


Height:
36.4 in (925 mm)

Orders ship within 1–5 business days. Shipping rates vary by order and destination. We ship across the U.S., with additional charges for Hawaii and Alaska. For damaged, lost, or delayed orders, please contact us for assistance.

Most products include a 12-month limited warranty covering manufacturer defects. Warranty terms may vary by product, especially lithium batteries and electrical components. Damage from improper installation, misuse, or normal wear is not covered.

Returns are accepted within 30 days of delivery for a full refund or exchange. Items must be new, unused, and undamaged, with the original order number provided. Customers are responsible for return shipping on unwanted or incorrectly ordered items. Lithium batteries must be unused and sealed to qualify for return. Damaged, defective, or incorrect orders should be reported immediately.