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eg4|SKU:1510983

EG4 AllWeather WallMount Battery — 48V 16kWh IP67-Rated LiFePO4 Storage

16kWh of Weatherproof, Wall-Mounted Power

16kWh usable capacity — Powers whole-home backup through extended outages
IP67 weatherproof enclosure — Install indoors or outdoors without concern
10,000+ cycle lifespan — Tested at 80% DoD for decade-plus reliability
Simplified auto-addressing setup — Pairs with EG4 inverters in closed-loop
Cold-climate internal heaters — Maintains performance in freezing temperatures
  • FREE System Design Consultation -- Our engineers size your system for your actual consumption
  • FREE Shipping -- LTL freight included — no surprise charges
  • Compatibility Guarantee -- Pre-vetted to work with your 48V inverter setup

$3,709.95

Out of stock

In the box

  • EG4 48V 314Ah AllWeather WallMount Battery
  • Mounting hardware
  • Product documentation
EG4 48V 314Ah 16kW AllWeather WallMount Battery
EG4 AllWeather WallMount Battery — 48V 16kWh IP67-Rated LiFePO4 Storage
$3,709.95

16kWh of Weatherproof, Wall-Mounted Power

This field-tested battery delivers 16kWh of usable energy in a weatherproof, wall-mounted enclosure rated IP67 against dust and water. With 314Ah at 51.2V nominal, it handles whole-home backup, off-grid homesteads, and hybrid solar installations where consistent long-duration power matters. The built-to-survive design includes internal heaters for cold climates and an EG4 smart BMS with active cell balancing for extended cycle life. Scale up to 32 batteries in closed-loop parallel as your energy needs grow.

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IP67 Weatherproof Rated
10,000+ Cycle Life
Built-In Cold Heaters
Auto-Addressing Setup
16kWh
Usable Energy
314 Ah
Charge Capacity
32
Max Parallel Batteries
Real Backup When the Grid Fails

Real Backup When the Grid Fails

Your neighbor's grid-tied solar system shuts down the moment the utility fails. That is not backup — it is a bill reducer still tethered to the same grid. The EG4 AllWeather WallMount battery stores 16kWh of usable energy that you control, independent of utility infrastructure. At Off Grid Vault, every component we sell is pre-vetted for compatibility with your inverter and charge controller. This battery supports closed-loop communication with EG4 systems and scales up to 32 units in parallel. No mix-and-match guesswork, no mismatched BMS protocols — just a battery bank sized to keep your refrigerator, well pump, and lights running through multi-day outages.

Mount It Anywhere — Rain, Snow, or Dust

Mount It Anywhere — Rain, Snow, or Dust

Most lithium batteries demand a climate-controlled utility room. The EG4 AllWeather WallMount carries an IP67 rating, meaning it seals out dust and withstands direct water exposure. Built-in internal heaters activate automatically in cold conditions, so the battery maintains rated performance well below freezing. At 34.6 inches wide by 21.7 inches tall and 9.3 inches deep, it mounts to your wall and stays out of the way — in a garage, on an exterior wall, or in a shed where a standard indoor-only battery would not survive. UL 1973 and UL 9540 certified with Flexboss21 and Flexboss18, this unit meets the safety standards serious off-grid builders require.

A Decade of Cycles, Not a Season

A Decade of Cycles, Not a Season

Tested for over 10,000 cycles at 80% depth of discharge, this LiFePO4 battery is engineered to deliver consistent capacity year after year — not fade after a few hundred charge cycles like standard lithium-ion. The integrated EG4 smart BMS provides active cell balancing, maximizing both efficiency and pack longevity. Bluetooth and Wi-Fi connectivity give you real-time state of charge, voltage, and temperature data through the EG4 app, with over-the-air firmware updates keeping the system current. At 314Ah and 51.2V nominal, this single unit replaces a rack of smaller batteries while simplifying your wiring, monitoring, and maintenance. Scale to 32 batteries in parallel closed-loop as your energy needs grow.

Installation Compatibility

Confirm these conditions before adding to your system.

  • Wall can support 309 lbs mounted load
  • 48V inverter with closed-loop EG4 communication
  • Minimum 34.6" × 21.7" wall space available

Built for Real-World Scenarios

Where this battery delivers dependable, long-duration power.

Whole-Home Backup
Off-Grid Homestead
Hybrid Solar Storage

Full specifications

At a glance

Dimensions
34.6" × 21.7" × 9.3"
Power
51.2 V
Compliance
UL 1973, UL 9540 W/ Flexboss21 & Flexboss18
Full specifications9 data points across 4 categories

Dimensions

Dimensions34.6" × 21.7" × 9.3"
Weight309 lbs

Power & Performance

Nominal Voltage51.2 V
Energy Capacity16kWh
Charge Capacity314 Ah
Parallel SupportUp to 32 batteries (closed-loop)
Design LifeTested for over 10,000 cycles at 80% DoD

Materials

Enclosure RatingIP67

Compliance & Warranty

CertificationsUL 1973, UL 9540 W/ Flexboss21 & Flexboss18

The Off Grid Vault Promise

What you get when you buy from us — no fine print.

30-Day Performance GuaranteeUninstalled, in original packaging. If it doesn't perform as specified, we make it right.
Free ShippingShips free on all orders, including LTL freight for large systems.
Authorized Dealer SupportWarranty claims handled directly through us. Real people, not a ticket queue.
★★★★★
“I mounted two of these on the exterior wall of my shop — no climate control needed. The IP67 rating is real, we had three days of heavy rain last month and zero issues. At 314Ah each, I am running my well pump, fridge, and shop lights without touching the generator. The EG4 app makes it easy to check state of charge from the house. This is the battery I wish I had bought first instead of messing around with smaller sealed lead-acid units.”
F
First L.Prescott, AZ

EG4 AllWeather WallMount Battery | 48V 314Ah | 16kWh

The EG4 AllWeather WallMount Battery is a rugged, high-capacity energy storage solution designed for reliable performance in demanding environments. With a 48V configuration and a massive 314Ah capacity delivering 16kWh of usable energy, it is well-suited for whole-home backup, off-grid systems, and hybrid solar installations where consistent, long-duration power is critical. Its wall-mounted design helps save floor space while keeping the system clean, organized, and easy to integrate into residential or light commercial setups.

Built for outdoor and indoor use, the AllWeather enclosure is engineered to withstand temperature swings and environmental exposure, making it a strong choice for garages, utility rooms, or exterior installations where traditional batteries may fall short. Advanced lithium battery technology ensures stable performance, high efficiency, and long cycle life, helping reduce long-term energy costs while maximizing return on investment.

The battery is designed to integrate seamlessly with compatible 48V inverters and energy management systems, making it easy to scale or expand as your power needs grow. Whether used for solar self-consumption, backup during outages, or off-grid living, the EG4 AllWeather WallMount Battery provides dependable, high-capacity storage with a durable design focused on real-world reliability and flexibility.


EG4 All Weather WallMount Battery | 48V 314Ah | 16kWh

EG4 48V 314Ah AllWeather WallMount Battery Specs

  • Nominal Voltage: 51.2 V
  • Energy Capacity: 16kWh
  • Charge Capacity: 314 Ah
  • Parallel Support: Up to 32 batteries (closed-loop)
  • Certifications: UL 1973, UL 9540 W/ Flexboss21 & Flexboss18
  • Dimensions: 34.6″ × 21.7″ × 9.3″
  • Weight: 309 lbs
  • Design Life: Tested for over 10,000 cycles at 80% DoD


EG4 48V 314Ah AllWeather WallMount Battery Features

    • High-Capacity Energy Storage: Provides 16kWh of usable energy (314Ah) for extended runtime and reliable backup power.
    • Built for Outdoor Use: IP67-rated enclosure protects against dust, water, and harsh weather conditions.
    • Smarter Battery Management: Integrated EG4 smart BMS includes active cell balancing for improved efficiency and longer battery life.
  • Easy Monitoring & Updates: Bluetooth and Wi-Fi connectivity allow real-time monitoring and over-the-air firmware updates through the EG4 app.
  • Cold-Weather Ready: Built-in internal heaters ensure reliable operation in colder climates.
  • Installer-Friendly Setup: Auto-addressing simplifies installation when paired with EG4 batteries and inverters in closed-loop communication.


Your Satisfaction with EG4 is Guaranteed:

  • 10-Year Limited Warranty
  • Free Shipping & Lowest Price Guarantee

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Frequently Asked Questions

If your utility runs $250 per month, adding 16kWh of self-generated storage directly offsets that cost. Over a 10-year cycle life at 80% DoD, this battery delivers stored energy at a fraction of utility rates — and the savings compound every year the grid raises rates. At Off Grid Vault, we include a free system design consultation so you size the right number of batteries for your actual kWh consumption, not guesswork.
Off Grid Vault is an authorized EG4 dealer. Your warranty claim goes through us — not a third-party ticket queue. This battery carries UL 1973 and UL 9540 certifications with Flexboss21 and Flexboss18, which you can verify directly. We handle the relationship with the manufacturer so you have a single point of contact if anything comes up during the warranty period.
The EG4 AllWeather WallMount is designed for 48V systems and supports closed-loop communication with compatible EG4 inverters. Auto-addressing simplifies setup when pairing with other EG4 batteries in the same bank. For non-EG4 inverters, it operates in standard 48V LiFePO4 mode — but we strongly recommend requesting our free system design consultation before purchasing. Tell us your inverter model and daily kWh consumption, and our engineers will confirm compatibility and spec the right configuration.
EG4 tests this battery for over 10,000 cycles at 80% depth of discharge. That translates to roughly 27 years of daily cycling — well beyond the typical solar application where batteries cycle once per day. The smart BMS provides active cell balancing to prevent capacity drift between cells, which is the primary cause of premature degradation in lesser LiFePO4 packs. Combined with the IP67 enclosure and internal heaters, this unit is built for environments that would destroy a standard indoor battery.
We ship free on all orders, including LTL freight for heavy items like this 309 lb battery. Lead times vary based on current stock — contact us for the most accurate estimate before ordering. This is a substantial piece of equipment that ships via freight carrier with threshold delivery included. Plan your installation timeline accordingly, and take advantage of our free system design consultation before the unit arrives so you are ready to mount and connect on delivery day.
That depends entirely on your daily kWh consumption and desired days of autonomy. A typical American home uses 25–30 kWh per day. One unit provides 16kWh, so two batteries would cover most daily loads with a single day of reserve. For three to five days of backup without sun, you would need four to six units. Request our free system design consultation — tell us your appliance list and daily usage, and we will calculate the exact battery count for your situation.
SKU: 1510983 Categories: , Brand:

The Off Grid Vault Promise

What you get when you buy from us — no fine print.

30-Day Performance Guarantee Uninstalled, in original packaging. If it doesn't perform as specified, we make it right.
Free Shipping Ships free on all orders, including LTL freight for large systems.
Authorized Dealer Support Warranty claims handled directly through us. Real people, not a ticket queue.

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About eg4 Solar Panels

eg4 is a trusted manufacturer of premium solar panels. OffGridVault is an authorized dealer offering the full eg4 lineup with free delivery, price match guarantee, and expert support.

View all eg4 products →

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