EG4 PowerPro EG4LIFPOW4-48V280A 14.3kWh 280Ah 48V Outdoor/Waterproof Heated Lithium Battery

The EG4 PowerPro WallMount All Weather Lithium Battery (EG4LIFPOW4-48V280A) is a 48V 280Ah LiFePO4 outdoor energy storage module rated at 14.3 kWh total capacity, purpose-built for residential wall-mount installations where the battery is exposed to weather, temperature swings, or direct outdoor conditions. With an IP65 ingress protection rating, integrated self-heating, weather-tight quick-connect cables, dual fire arrestors, and a 200A intelligent BMS with 600A internal busbars, it is the outdoor-rated counterpart to the EG4 WallMount Indoor — sharing the same core electrical architecture while adding the enclosure and connectivity upgrades required for exterior deployment.

Note: EG4 recommends a 20% SOC cutoff to maintain the rated 80% depth of discharge. At this setting, usable capacity is approximately 11.4 kWh — not the full 14.3 kWh total. Size your system runtime calculations around 11.4 kWh for accuracy.

Key specifications

• Nominal voltage / total energy capacity: 51.2V (48V system) / 14.3 kWh @ 25°C, 100% SOC
• Capacity: 280Ah ±2% @ 25°C ±2°C @ 0.5C
• Chemistry: LiFePO4 (lithium iron phosphate) — inherently stable cathode chemistry with no thermal runaway risk associated with NMC or NCA cells
• Ingress protection: IP65 — fully dust-tight and protected against low-pressure water jets; rated for outdoor wall-mount installation
• Max. continuous charge / discharge current: 140A / 140A; extended discharge: 200A continuous for 30 minutes
• BMS continuous rating: 200A built-in; short-circuit protection trips at >600A in under 0.1 ms
• Integrated busbars: 600A internal busbars with 4 positive 4 negative terminals — no external busbars required when paralleling units
• Charge voltage (bulk/absorb): 56.0V (±0.8V BMS); recommended: 56.2V (±0.2V); float: 54V
• Charge temperature: 32°F to ≈122°F (0°C to ≈50°C); self-heater activates at ≤32°F (0°C), off at ≥41°F (5°C); 224W heater at 56V
• Discharge temperature: -4°F to ≈131°F (-20°C to ≈55°C)
• Cycle life / design life: >8,000 cycles at 0.5C / 80% DOD; >15 years design life; lifetime production: 82.6 MWh
• Dimensions (H × W × D): 36.1 × 22.3 × 9.1 in. (916 × 566 × 232 mm); weight: 308.6 lbs. (140 kg)
• Communication: RS485 / CAN (customizable); on-board LCD touchscreen
• Certifications: UL1973, UL9540A (Passed); ETL Listed
• Warranty: 10-year limited

IP65 outdoor enclosure and weather-tight connections

The All Weather enclosure is rated IP65 — fully sealed against dust ingress and resistant to directed water spray — enabling permanent outdoor wall-mount installation in conditions that would compromise or void the warranty on an IP20-rated indoor battery. Included weather-tight quick-connect cables with outdoor-rated connectors eliminate the field-assembly of outdoor-grade DC wiring at commissioning. For installations stacking multiple units outdoors, clearance requirements are compact: 3 inches side-to-side and 0.75 inch front-to-back between stacked batteries. Indoor installations require 6 inches side-to-side and 2 inches front-to-back.

Self-heating for cold outdoor climates

The 224W integrated heater activates automatically when internal battery temperature drops to 32°F (0°C) and disengages at 41°F (5°C), allowing the battery to accept charge at outdoor ambient temperatures that would put a non-heated lithium unit into charge-protection lockout. Discharge capability extends down to -4°F (-20°C) without heater assistance — covering most North American outdoor winter conditions. For installations in cold climates, this eliminates the need for an insulated enclosure or external battery warmer to maintain year-round operability.

BMS, fire safety, and cell monitoring

The built-in 200A BMS monitors individual cell voltages in real time alongside module-level current, voltage, and temperature — not just aggregate pack readings. Passive cell balancing activates at a 120mA current when cell voltage difference exceeds 40mV. Dual on-board fire arrestors provide a secondary layer of thermal runaway protection beyond the inherent stability of LiFePO4 chemistry. Temperature protection trips within one second outside the charge range of 23°F–158°F (-5°C–70°C) and outside the discharge range of -4°F–167°F (-20°C–75°C).

Applications: outdoor solar and home backup

• Outdoor whole-home backup: Wall-mounted at exterior utility locations alongside the service panel or inverter; ~11.4 kWh usable at recommended 80% DOD.
• Off-grid solar: Pairs with 48V hybrid or off-grid inverters for cabins, rural properties, or full-time off-grid homes exposed to the elements.
• Cold-climate installations: Self-heating maintains charge capability at outdoor temperatures as low as 32°F (0°C), with discharge down to -4°F (-20°C).
• Parallel expansion: Multiple units connect via integrated 600A busbars without external combiner hardware for linear capacity scaling.

Inverter compatibility and closed-loop communications

The on-board LCD touchscreen provides selectable closed-loop BMS-to-inverter communication with EG4, Schneider, Sol-Ark, Victron, Growatt, Megarevo, Luxpower, and Deye inverters — no additional gateway hardware required to activate closed-loop operation. RS485 and CAN ports support further customization. For EG4 18kPV inverter pairings, the optional conduit box mates directly to the inverter's connection ports for a clean, cable-managed installation. For all other inverters or standalone deployments, conduit box plugs should be installed. Charge parameters: bulk and absorption at 56.2V, float at 54V, recommended charge current 60–140A.

Why choose the EG4 PowerPro WallMount All Weather?

The EG4 PowerPro WallMount All Weather separates itself from the Indoor variant — and from most competing 48V wall-mount LiFePO4 batteries — on three specifications that matter for outdoor siting: IP65 ingress protection, a >15-year design life that extends five years beyond the indoor model's rating, and weather-tight quick-connect cables included in the box. The 200A BMS, 600A integrated busbars, dual fire arrestors, and eight-brand closed-loop inverter compatibility are shared across the EG4 WallMount line. For buyers who need certified outdoor energy storage with a 10-year warranty, UL1973 and UL9540A listings, and a clear upgrade path to larger parallel arrays, the EG4LIFPOW4-48V280A is available through A1 SolarStore.