Product Description

The EG4 WallMount 280Ah All-Weather is a 48V, 14.3 kWh LiFePO4 home backup battery in a weather-rated wall-mounted enclosure, allowing indoor or outdoor installation. It carries a UL1973 safety listing and communicates with EG4 and other compatible 48V inverters for closed-loop operation — a substantial block of storage that mounts on the wall instead of taking floor space.

Why the WallMount 280Ah All-Weather

  • 14.3 kWh from one unit — 280Ah at 48V, enough to carry essential circuits overnight or anchor a larger bank
  • All-weather enclosure: rated for outdoor mounting, so the battery can live beside the inverter on an exterior wall — no dedicated battery room required
  • UL1973 listed for residential battery backup
  • Closed-loop communication with EG4 and other compatible 48V inverters for accurate state-of-charge and coordinated charging
  • LiFePO4 chemistry with a built-in battery management system (BMS)
  • Wall-mounted design keeps floors clear in garages and utility spaces

Who it's for

Homeowners adding storage to an EG4-based system where outdoor or garage-wall mounting is the practical spot. If you want the newer 314Ah cells (16 kWh) or self-heating for cold climates, compare the WallMount 314Ah All-Weather and 314Ah Indoor models.

Specifications

Nominal voltage 48V
Capacity 280Ah — 14.3 kWh
Chemistry LiFePO4 (lithium iron phosphate)
Certification UL1973
Enclosure All-weather, indoor or outdoor mounting
Communication Closed-loop with EG4 and compatible 48V inverters
Protection Built-in BMS
SKU FEWPP-48143-G1

Warranty

The EG4 WallMount 280Ah All-Weather carries a 10-year manufacturer warranty covering full parts or product replacement (prorated after the first year). EG4 requires warranty registration within the first year of purchase (or proof of purchase from an authorized distributor) to keep coverage valid.

Common questions

Can it really mount outside?

Yes — the enclosure is weather-rated for outdoor installation. Siting it out of direct afternoon sun helps the pack stay in its ideal temperature range.

Which inverter should I pair it with?

EG4 FlexBOSS18 or FlexBOSS21 for a native closed-loop system, or another compatible 48V hybrid/off-grid inverter.

Can I parallel more batteries later?

Yes — additional WallMount units can be added to grow the bank as your storage needs increase.

Customers also bought

    • FREE SHIPPING IN USA

      Free shipping with every order

    • SATISFACTION GUARANTEED

      If your order arrives defective or fails to

      function properly, you will receive a full 100% refund!

    • PREMIUM CUSTOMER SUPPORT

      Connect with us through email, or

      phone, and we will address any questions you may have!

    • SECURE ENCRYPTED PAYMENTS

      We utilize advanced encryption to

      ensure there is never an issue with your privacy.