AC-coupled (retrofit onto existing solar)

Sunpura S2400 AC 2.4 kWh

Add 2.4 kWh of storage and backup to a home that already has solar. AC-coupled, dual-CT metering, no rewiring of your existing panels.

2.4 kWh
usable energy
2,400 W
rated power
8,000
cycles (70% SOH)
10 yr
warranty
Sunpura S2400 AC retrofit home battery

What it is

The Sunpura S2400 AC is the AC-coupled version of the S2400. It is made for homes that already have solar: instead of connecting panels directly, it couples onto your existing solar and inverter over AC, so there is no rewiring of the array. A dual-CT meter reads your existing inverter, giving the system a complete picture of what your home produces and uses.

Add storage to solar you already have

Thousands of South African homes installed rooftop solar without a battery. The S2400 AC is the simplest way to add 2.4 kWh of storage and backup to that setup: store surplus solar and cheaper off-peak power, and use it when tariffs are highest or when the grid drops.

Why AC-coupled

  • Retrofit-friendly: works alongside most existing inverters and solar systems, no re-cabling of the panels.
  • Dual-CT metering: accurate, whole-home energy awareness.
  • Same trusted platform: LiFePO4 cells, 8,000 cycles, 90% depth of discharge.
  • Plug-and-play and stackable, managed in the Sunpura HOME app.

Certification

European and international certification (CE/EMC, RED, LVD, CB, RoHS, REACH, UN38.3, IP65, WEEE, VDE 4105, EN 50549 and more). South African NRCS and NRS 097-2-1 compliance is being completed as part of Sunpura’s market entry; we make no South African certification or grid feed-in claims until it is in place.

Full specifications

S2400 AC technical parameters

AC coupling
Max AC input (AC coupled)2,400 W
MeteringDual-CT (reads third-party inverter)
Works withan existing rooftop PV / inverter system
Battery
ChemistryLiFePO4 (LFP)
Nominal voltage48 V
Rated energy2,400 Wh (2.4 kWh)
Max charge / discharge current50 A
Rated power2,400 W
Cycle life8,000 cycles at 70% SOH (1.0C)
Depth of discharge90%
AC output (backup / off-grid)
Max output power2,400 W
Max output current10.9 A
Peak output (5 s)3,600 W
Nominal output220 / 230 VAC, 50 Hz
General
Protective classClass I
Operating temperature-20 C to 55 C
Ingress protectionIP65
Net weightPower Box 14 kg + Battery Box 26.5 kg
Dimensions (W x H x D)450 x 430 x 285 mm
CommunicationWi-Fi / Bluetooth
Warranty10 years

Certification

European and international certification. South African NRCS / NRS 097-2-1 compliance is being completed as part of Sunpura's market entry.

CE / EMCREDLVDCBRoHSREACHUN38.3IP65WEEEVDE 4105EN 50549

Interested in the S2400 AC?

Request a quote, or partner with Sunpura as a distributor or installer.