EG4  ·  Batteries

SKU: 1510984

EG4 16kWh WallMount Battery

High-Capacity Indoor Battery with Smart Safety & Scalable Storage.

Regular price
$3,399.00
Sale price
$3,399.00
Regular price
$4,625.00
You save $1,226.00
Pay over time at checkout.
Orders processed in 24–48 hours
30-day returns
Lifetime support by phone, chat & email
Full manufacturer warranty

Questions before you buy?

Call 877-242-2792 and we’ll work it out with you. Mon–Thu 10am–5:30pm, Fri 10am–1pm EST.

Trusted by 50,000+ Customers powered since 2018
Lifetime Support Phone, email or live chat, for good
Price Match Found it cheaper? Tell us
Ships from the USA Warehouses in CA, TX and NY

Frequently bought together

Specifications

The details.

High-Capacity Indoor Battery with Smart Safety & Scalable Storage

The EG4 48V 314Ah Indoor WallMount Battery delivers 16kWh of reliable, space-saving power—ideal for whole-home backup, off-grid systems, and daily solar energy storage. Designed for indoor use, this battery features a compact wall/floor-mountable enclosure, built-in self-heating, and advanced fire safety protections, ensuring dependable performance even in cold climates.

With smart closed-loop communication and plug-and-play compatibility with leading inverters, it’s never been easier to scale your solar power setup with confidence.

Key Features & Benefits:

  • 16kWh Capacity (314Ah @ 48V) – High-output energy storage for backup and off-grid use

  • 200A Continuous Discharge / 12.8kW Peak Output – Supports heavy household loads and surge demands

  • Self-Heating Function – Maintains performance in cold temperatures

  • Dual Fire Arrestors + Smart BMS – Enhanced safety with real-time cell monitoring and faster balancing

  • Auto-ID & Plug-and-Play Setup – Auto configuration speeds up install, no DIP switch needed

  • Scalable Storage – Seamlessly add up to 16 units for expanded capacity

  • Inverter Compatibility – Closed-loop support for top inverter brands via CAN & RS485

  • Quiet, Natural Convection Cooling – No fans, no noise—perfect for indoor spaces

  • UL 1973 Certified – Safety-certified for residential and commercial installs

  • 10-Year / 10,000 Cycle Warranty – Long lifespan backed by a trusted manufacturer

Perfect For:

  • Whole-home backup and hybrid solar systems

  • Off-grid energy storage and time-of-use savings

  • Indoor installations where space, noise, and safety matter

Take Control of Your Energy Future

With unmatched safety, smart features, and reliable long-term storage, the EG4 Indoor WallMount Battery helps you power through outages and reduce grid reliance—all in a sleek, installer-friendly package.

 

PRODUCT TYPE
Low Voltage LFP Battery
BATTERY TYPE
Lithium Iron Phosphate (LFP)
MODEL NUMBER
WM-48-314-IN-XX (XX is a number between 00 – 99)
NOMINAL ENERGY CAPACITY
16kWh
USABLE ENERGY (DOD%)
12.86kWh (80% recommended)
RECOMMENDED VOLTAGE RANGE
47.5 – 57.6 VDC
NOMINAL VOLTAGE
51.2 VDC
CAPACITY
314Ah
CHARGING VOLTAGE RANGE
56 – 57 VDC
DISCHARGING CUT-OFF VOLTAGE
47.5 VDC
MAX CONTINUOUS/RECOMMENDED CHARGE CURRENT
157A/157A
MAX CONTINUOUS/RECOMMENDED DISCHARGE CURRENT
200A/157A
CONTINUOUS CHARGE/DISCHARGE POWER
8/10.2 kW
RECOMMENDED CHARGING/DISCHARGING RATE
0.5C
SHORT CIRCUIT CURRENT
1700A, 15ms delay
PEAK POWER
12.8kW (3 sec)
ROUND-TRIP EFFICIENCY
95%
MAX PARALLEL UNITS
16
PROTECTION FEATURES
Over/Under Voltage, Over-Current, Short Circuit, High/Low Temp
BATTERY MANAGEMENT SYSTEM (BMS)
Integrated, Active Balancing
COMMUNICATION PROTOCOLS
RS485, CAN
BATTERY BREAKER
250A
STORAGE TEMPERATURE RANGE*
-4 – 131°F (-20 – 55°C)
HUMIDITY RANGE
5% – 95% RH (non-condensing)
ALTITUDE
9843 ft. (<3000 m)
COOLING METHOD
Natural Convection
DIMENSIONS (H × W × D)
34.1 in. × 18.1 in. × 9.6 in. (865 mm × 460 mm × 245 mm)
OPERATING TEMPERATURE RANGE
Charge: 32 – 122°F (0 – 50°C) Discharging: -4 – 131°F (-20 – 55°C)
WEIGHT
293.2 lbs. (133 kg)
ENCLOSURE RATING
IP20
MOUNTING OPTIONS
Floor mount/wall attached
DISPLAY/INDICATORS
LED Status
CONNECTOR TYPE
Degson quick connector/screw terminal
UL 1973
Yes
UL 9540
See https://eg4electronics.com/ for supported UL 9540 configurations
UL 9540A
Cell, Module (Pending), Unit Level (Pending)
UN 38.3
Yes
CYCLE LIFE (70% EOL CAPACITY)*
10000 cycles @ 0.5C, 25°C, 80% DOD
DESIGN LIFE**
10 years
WARRANTY
10 years or 10000 cycles
APPLICATION TYPE
Residential/Commercial/Off-grid/Backup