EG4 WallMount 314Ah Indoor 48V Heated LiFePO4 Wall Battery
A 16 kWh, 51.2 V indoor wall or floor battery with built-in heating, Bluetooth and Wi-Fi, Auto-ID setup and a 200 A BMS.
$3,400
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Usability
6.4 out of 10It suits a buyer who wants 16 kWh with built-in heating and wireless monitoring indoors, and who will not need more than 200 A from one unit or a case rated for outdoor use.
Strengths
- 16,077 Wh in one 51.2 V unit
- 448 W self-heater switches on at 0°C
- Wi-Fi and Bluetooth antenna in the box
- Auto-ID sets protocol and battery IDs
- 12.8 kW peak output for 3 seconds
Drawbacks
- 200 A maximum continuous is 0.64C on 314 Ah
- Cycle rating ends at 70 percent capacity
- Warranty ends at 10 years or 10,000 cycles
- EG4 lists 293.2 lb and 314 lb34.1 and 36.4 in
- IP20 caseparalleling kit sold separately
Specs
- Capacity6,000 Wh or more
- AC OutputNot applicable
- System Voltage48 V
- Panel PowerNot applicable
- Charge CurrentNot applicable
- Safety ListingUL 1973 listed
- Cell TypeNot applicable
- Low-Temp ChargingSelf-heating
- Warranty10 Years
- MonitoringBluetooth add-on
- Weight293.2 lb
At a glance
- 250 A battery breaker
- NO/NC dry contact, 12 V out
- Active cell balancing
- Four Degson quick connectors
EG4 is the brand of EG4 Electronics LLC of Sulphur Springs, Texas, part of Energy Access Innovations with its sister company Signature Solar.
It sells with a cart through Signature Solar at signaturesolar.com and through approved distributors and dealers such as Current Connected, Shop Solar and BigBattery, while eg4electronics.com has no cart.
The EG4 WallMount 314Ah Indoor Battery (model WM-48-314-IN-XX or WM48314INXX, XX from 00 to 99) is a 51.2 V, 314 Ah LiFePO4 battery of 16 cells storing 16 kWh (16,076.8 Wh), 12.86 kWh usable at EG4's recommended 80 percent depth of discharge, with a third-generation BMS rated at 157 A maximum continuous charge, 200 A maximum continuous discharge (157 A recommended), 8 kW continuous charge and 10.2 kW continuous discharge power, a 12.8 kW peak for 3 seconds, 95 percent round-trip efficiency, active balancing and a 250 A breaker. It charges at 0 to 50°C and discharges at −20 to 55°C, and a 448 W internal heater switches on at 0°C and off at 3°C. It has CAN and RS485 ports for closed-loop inverter communication, two battery-comm ports for paralleling, Auto-ID that detects the inverter protocol and assigns battery IDs, Wi-Fi and Bluetooth through an included 80 in antenna for monitoring and over-the-air firmware updates, LED status lights, a dry contact (normally open, normally closed and 12 V) for generator start or alarms, four 250 A Degson quick connectors and a 250 A stud terminal. Up to 32 connect in parallel (six per bank on the internal busbars), each added battery needing a paralleling kit sold separately, and it parallels with EG4's 280Ah WallMounts; EG4 publishes no series connection. The IP20 case is for indoor use, wall-attached or floor-standing on adjustable feet with natural-convection cooling, measuring 34.1 x 18.1 x 9.6 in (865 x 460 x 245 mm) on EG4's spec sheet (36.4 in tall on EG4's and Signature Solar's product pages) and weighing 293.2 lb (133 kg) on the spec sheet (314 lb on EG4's product page). The box holds the battery and the Wi-Fi and Bluetooth antenna. The AllWeather version (SKU 1510983), with an IP67 case, measuring 34.6 x 21.7 x 9.3 in and weighing 309 lb, is $3,749.99 on its own Signature Solar page. EG4 sells through its sister company Signature Solar; its warranty covers only units bought from an EG4 approved vendor and registered within the first year or backed by proof of purchase from an authorized distributor.
