Huawei FusionSolar LUNA2000-14-S1

Residential battery storage system

LUNA2000-14-S1 combines one LUNA2000-10KW-C1 power module with two LUNA2000-7-E1 battery modules. The cited datasheet gives 13.8 kWh usable and 7 kW maximum charge/discharge power for this two-module build. Its RS-485 link is assigned to a supported Huawei inverter, and Edge reads the battery through that inverter or the SmartLogger that manages it.

Huawei LUNA2000-14-S1
  • RS485
  • CAN

Residential battery storage system

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Compatibility

Compatible with EpiSensor Edge through the Huawei inverter that owns it

Huawei’s issue 06 manual wires the battery RS-485 to the inverter, which reports ESS status including state of charge. Edge reads the battery through that inverter: over the SUN2000 inverter's Modbus RTU communications pair, or through a SmartLogger3000 over Modbus TCP, as the Huawei inverter and SmartLogger guides describe.

LUNA2000-14-S1 with one 10KW-C1 controller and two 7-E1 modules. Datasheet 01-202411 and LUNA2000-S1 manual issue 06, 30 September 2025. Site check: confirm in the installed inverter’s Modbus interface definition which ESS values it publishes, and check inverter-specific firmware and country approval. Newer 5-E1 arrangements and NHS1 variants are separate.

Connect it with

Route into Edge

In Smart Dongle networking, where the battery connects to a supported SUN2000 inverter

  • Wired
  • Edge
  • Platforms
Residential battery storage system
Interface
Gateway
Edge
Output
LUNA2000-14-S1LUNA2000-14-S1 battery
Huawei SUN2000 inverterOwns the battery link and reports ESS status, including state of charge
ZGW-20 GatewayHosts Edge locally
EpiSensor EdgeModbus client + register map
Customer platformMQTT · API · files
Battery RS-485 and enable signal
Modbus RTU · RS-485, communications pair
Runs locally
Optional onward data
Leave the battery's RS-485 pair on the inverter. Connect Edge to the inverter's own Modbus RTU communications pair, not the meter/battery pair, as the SUN2000 inverter guides describe, and read the ESS values the inverter reports. Keep one master on each RS-485 bus and leave battery working modes as commissioned. The customer-platform output is optional; Edge remains the local system of record.

In SmartLogger networking, where the inverter reports to a SmartLogger3000

  • Wired
  • Edge
  • Platforms
Residential battery storage system
Interface
Gateway
Edge
Output
LUNA2000-14-S1LUNA2000-14-S1 battery
Huawei inverter and SmartLogger3000The inverter owns the battery link; the SmartLogger serves plant data over Modbus TCP
ZGW-20 GatewayHosts Edge locally
EpiSensor EdgeModbus client + register map
Customer platformMQTT · API · files
Battery RS-485 to the inverter
Ethernet, Modbus TCP
Runs locally
Optional onward data
Leave the battery on its inverter and the inverter on the SmartLogger. Connect Edge to the SmartLogger's Modbus TCP monitoring endpoint on the site network, as the SmartLogger3000A guide describes. Read only. The customer-platform output is optional; Edge remains the local system of record.

Models

Download
ModelsInterfaceRoute into Edge
LUNA2000-14-S110KW-C1 controller plus two 7-E1 modules; 13.8 kWh usableRead the battery through the approved inverter, which is the system controller, or through its SmartLogger.
LUNA2000-7-S1 / 21-S1One / three 7-E1 modules, respectivelyDo not copy this guide’s capacity, power or physical height.
LUNA2000-5/10/15-S1 and NHS1Different module quantity, product scope or regional familyRead the actual controller and module labels before applying compatibility notes.

Specifications

Exact build
One LUNA2000-10KW-C1 power module plus two LUNA2000-7-E1 battery modules2
Usable energy
13.8 kWh at the datasheet’s beginning-of-life test conditions; not a promise for every operating state2
Charge/discharge power
7 kW maximum for two 7-E1 modules; the 10.5 kW figure belongs to the three-module 21-S1 build2
Voltage
350–560 V single-phase system or 600–980 V three-phase system, depending on approved inverter2
Installation
Floor stand standard, wall mount optional; 590 × 255 × 870 mm and 148 kg for the two-module stack2
Environment
IP66, -20 to +55 °C with derating conditions; outdoor installation recommended2
Inverter interface
RS-485 and enable signal to the inverter; separate links may connect parallel ESSs3

Interface

Documented measurements and integration boundaries for LUNA2000-14-S1.

  • Huawei’s FusionSolar app and supported inverter report ESS status, including state of charge; that is an inverter-mediated system view.
  • The battery RS-485 pair in the manual is used for ESS-to-inverter communication, not evidence of a spare third-party Modbus server.
  • Treat SOC as the battery’s state estimate and power as its instantaneous operating value. Compare changes over the same interval with the AC site meter, which also includes household loads and inverter losses. A grid-energy total and battery stored energy describe different measurement boundaries.

Assessment

Exact 10KW-C1 plus two 7-E1 modules, within Huawei’s approved inverter and firmware combinations; Edge reads the battery through the inverter.

InteroperabilityLimited
Huawei documents the ESS-to-inverter RS-485 link; Edge reads the battery through that inverter rather than on the battery bus.3
AccuracyNot yet assessed
No exact externally readable ESS measurement map or accuracy statement for a direct third-party client is supplied.
SecurityNot yet assessed
The retained battery documents do not define authentication, encryption or access policy for a direct third-party ESS read endpoint.
ReliabilitySupported with conditions
Manufacturer installation, indicator, fault and inverter-firmware guidance supports maintenance when the approved topology is followed.3
RuggednessSupported with conditions
IP66 and the ambient/altitude limits are stated, with derating and indoor-installation conditions.2
ScalabilitySupported with conditions
One-to-three module stack sizes and inverter-dependent parallel limits are documented; configuration is not interchangeable across inverter families.23
LifecycleSupported with conditions
Dated specification and issue-controlled manual provide model and firmware tables; replacements must preserve the exact module/inverter boundary.23

Setup

  1. Record the 10KW-C1 controller and both 7-E1 module labels.

    The 14-S1 marketing name is a system configuration, not a single module code.

  2. Choose a supported Huawei inverter and confirm installed firmware against the issue 06 manual’s exact inverter table and local grid approvals.

    The compatible list includes MAP0, M1 and MB0 families with distinct firmware floors and parallel limits.

  3. Follow Huawei’s ESS-to-inverter DC, RS-485 and enable wiring.

    Do not attach an extra serial master to the inverter-owned battery bus.

  4. If changing between MB0 and M1 inverter generations, review the manual’s baud-rate note before powering down or reusing the battery; incompatible retained settings can interrupt communication.

  5. Use issue 06, sections 6.3.3 and 6.4.3.

    With Smart Dongle networking, connect to the inverter in FusionSolar and open Monitor, then the ESS icon. With SmartAssistant networking, open Monitor, select the inverter, then Connected device and the ESS icon. Record running status, SOC, power and charge/discharge state during a known charging or discharging interval. Compare the direction with the site meter and the active battery working mode; retain any alarm alongside the reading.

Common questions

Is 14-S1 a 14 kWh usable battery?
The two-module 7-E1 configuration is listed at 13.8 kWh usable under the datasheet’s initial test conditions.2
Can Edge connect directly to the battery RS-485 terminals?
The manual assigns that pair to the Huawei inverter and documents no spare bus master. Edge reads the battery through the inverter or SmartLogger instead.3
Do all listed inverters support four parallel ESSs?
No. The manual’s inverter table gives distinct limits and firmware floors; the datasheet footnote restricts four systems to the named MB0 variants.23

Sources

  1. LUNA2000-7/14/21-S1 Swiss specifications page (opens in a new tab) Huawei
  2. LUNA2000-7/14/21-S1 datasheet version 01-202411 (opens in a new tab) (PDF) Huawei
  3. LUNA2000-S1 user manual issue 06, 30 September 2025 (opens in a new tab) (PDF) Huawei

Further reading

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