by BigBattery

BigBattery EG4 WallMount 280Ah All Weather 48V - 14.3kWh Home Battery Backup - FEWPP-48143-G1

SKU FEWPP-48143-G1

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The BigBattery EG4 WallMount 280Ah All Weather 48V - 14.3kWh Home Battery Backup delivers powerful, reliable energy storage in a compact, wall-mounted design made to withstand all weather conditions. Engineered for residential and light commercial use, this lithium iron phosphate (LiFePO₄) battery offers 14.3kWh of capacity and a robust 280Ah rating, making it ideal for whole-home backup or off-grid solar systems. With built-in smart BMS, IP65-rated weather resistance, and seamless scalability, the EG4 PowerPro ensures long-lasting performance and safety in any environment. Whether you're preparing for outages or powering a self-sufficient energy system, this battery is a reliable and future-proof choice.

Features:

14.3kWh capacity with 280Ah for extended backup
LiFePO₄ chemistry for safety, efficiency, and long cycle life
Wall-mountable, all-weather IP65-rated enclosure
Integrated smart BMS for real-time monitoring and protection
Scalable and compatible with leading inverter

Specifications

Specification	Details
Nominal Voltage	51.2V
Chemistry	Lithium Iron Phosphate (LiFePO₄)
kWh Capacity	14.3kWh
Ah Capacity	280Ah
Max. Continuous Charge Current	200A
Max. Continuous Discharge Current	200A
Recommended Charge Current	60 – 160A
Recommended Discharge Current	160A
Max Continuous Discharge Rate	10,240W
Charging Voltage (Bulk/Absorb)	56.0V (±0.8V)
Recommended Charging Voltage	56.2V (±0.2V)
Float Voltage	54V (±0.2V)
State of Charge (SoC) Cutoff	20%
Internal Heater Cutoffs	≤32ºF (On) / ≥41ºF (Off)
Charging Temperature Range	32ºF – 122ºF (0ºC – 50ºC)
Discharging Temperature Range	-4ºF – 131ºF (-20ºC – 55ºC)
Storage Temperature Range	32ºF – 113ºF (0ºC – 45ºC)
Operating Altitude	<16,404 ft (<5,000 m)
Protection Rating	IP65
Communication Ports	RS485 / CANBus
Power Consumption (Operating)	224W
Dimensions (H x W x D)	36.1 x 22.3 x 9.1 in. (916 x 566 x 232 mm)
Weight	308.6 lbs (140 kg)
Cycle Life	>8000 cycles @ 80% DoD
Warranty	10 years
Design Life	>15 years
Lifetime Energy Output	82.6 MWh
Included In Box	Mounting Bracket, X Bracket, 6 Expansion Bolts, Red & Black Inverter Cables (3.3 ft), Comm Cable (5 ft)