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14.3 kWh
Battery moduleEG4 Electronics

EG4 Electronics WP-16/280-1AWLL

14.3 kWh · 10.2 kW · Lithium Iron Phosphate

UL 1973CEC listed · Dec 11, 2023Installed in 5 SoCal permits
  • Nameplate energy14.3 kWh
  • Continuous power10.2 kW
  • Warranty10 years
  • ChemistryLithium Iron Phosphate

Overview

CEC Battery List

WP-16/280-1AWLL: 14.3 kWh nameplate energy; 10.2 kW continuous; lithium iron phosphate; 10 years warranty; named in 5 Southern California permits.

Capacity & power

CEC Battery List

Charging from solar in Southern California

NLR PVWatts v8 · Cali-Graf calculation
CityDecemberJune
Los Angeles4.5 kW2.6 kW
Palmdale4.1 kW2.4 kW
Chula Vista3.8 kW2.7 kW
Huntington Beach4.2 kW2.9 kW
Riverside4.3 kW2.5 kW
Santa Clarita4.2 kW2.5 kW
Solar array size that refills the battery from empty in one average day, before the home uses any of it (NLR PVWatts v8, 20° south roof).

Installation & environment

CEC Battery List · EG4 Electronics datasheet

Warranty

CEC Battery List · EG4 Electronics datasheet

Safety listings

CEC Battery List
UL 9540 certifies the whole storage system; UL 9540A is the fire-propagation test that fire codes ask for indoors and near walls.

Full specifications

CEC Battery List · EG4 Electronics datasheet

Installs in Southern California

building permits
5
Permits name it
Mar 2025 – Jun 2025
1
Jurisdictions so far
LA County (unincorp.) (5)
2
Units per install
median of 4 permits

Installed together with

EG4 (model not specified)
3
EG4 Electronics 18KPV-12LV
2
Only installer and ZIP level is shown — no homeowner names, street addresses or permit numbers. Permits from LA County (unincorp.) come without a contractor license, so they count toward totals but not toward installers. Counts grow as more permit portals are loaded.

Compare with similar batteries

CEC Energy Storage System List
BatteryEnergyContinuous powerChemistryWarrantySoCal permits
LG Energy Solution RESU 10H Prime9.6–16 kWh5 kWLithium Ion—127
Schneider Electric Schneider Boost10 kWh8.1 kWLithium Iron Phosphate10 years—
Schneider Electric Schneider Boost10 kWh8.1 kWLithium Iron Phosphate10 years—
EG4 Electronics EG4 WALLMOUNT14.3 kWh10.2 kWLithium Iron Phosphate10 years—
EG4 Electronics EG4 WALLMOUNT14.3 kWh10.2 kWLithium Iron Phosphate10 years—
EG4 Electronics WM48314AWXX12.8 kWh10.2 kWLithium Iron Phosphate10 years—
Same segment, similar capacity; each row from the same sources.

Documents

manufacturer documents

Questions & answers

How much energy does the EG4 Electronics WP-16/280-1AWLL store?

14.3 kWh nameplate, per the California Energy Commission list.

Can the WP-16/280-1AWLL be installed outdoors?

Installation location per the datasheet: outdoor.

What warranty does the WP-16/280-1AWLL have?

10 years (datasheet).

Sources

  1. California Energy Commission — Energy Storage System List, data as of Oct 7, 2026. Manufacturer-reported values confirmed by CEC against certificates.
  2. California Energy Commission — Battery List, data as of Oct 7, 2026.
  3. EG4 Electronics — datasheet EG4® WALLMOUNT ALL WEATHER BATTERY – Spec-Sheet.
  4. EG4 Electronics — document library on the manufacturer’s website (links above).
  5. NLR (formerly NREL) — PVWatts v8, NSRDB PSM v3 typical-year weather for Los Angeles, Palmdale, Riverside, Santa Clarita, Chula Vista, Huntington Beach.
  6. Building permits — Southern California permit portals. Equipment matched from permit descriptions.
  7. Cali-Graf calculations — formulas and inputs are shown next to each calculated value (efficiency from area, temperature-corrected voltages, string sizing, energy estimates).