SolarEdge · Home battery
Home Battery 400V / Home Battery Low Voltage / Energy Bank Modbus register map
Default configuration
- Protocol
- Modbus TCP
- Port
- 502
- Unit ID
- 1
- Addressing
- 0-based
- Byte order
- Big endian
- Word order
- Low word first
Register map
| Address | Count | Name | Type | Unit | Scale | Access |
|---|---|---|---|---|---|---|
| 57600 | 16 | Battery manufacturer "SolarEdge". | Ascii | - | 1 | R |
| 57616 | 16 | Battery model Battery model name, e.g. the Home Battery part number. | Ascii | - | 1 | R |
| 57632 | 16 | Battery firmware version | Ascii | - | 1 | R |
| 57648 | 16 | Battery serial number | Ascii | - | 1 | R |
| 57666 | 2 | Rated battery energy Nameplate energy of the pack as it is configured (B_RatedEnergy). | Float32 | Wh | 1 | R |
| 57668 | 2 | Maximum charge power | Float32 | W | 1 | R |
| 57670 | 2 | Maximum discharge power | Float32 | W | 1 | R |
| 57672 | 2 | Maximum charge power, peak | Float32 | W | 1 | R |
| 57674 | 2 | Maximum discharge power, peak | Float32 | W | 1 | R |
| 57708 | 2 | Battery temperature, average | Float32 | °C | 1 | R |
| 57710 | 2 | Battery temperature, maximum | Float32 | °C | 1 | R |
| 57712 | 2 | Battery DC voltage | Float32 | V | 1 | R |
| 57714 | 2 | Battery DC current | Float32 | A | 1 | R |
| 57716 | 2 | Battery DC power Positive while charging, negative while discharging (the community integration's power-flow templates treat positive as charging and negate the value for the Home Assistant energy dashboard). | Float32 | W | 1 | R |
| 57726 | 2 | Usable battery energy Usable capacity the pack reports (B_MaxEnergy); a pack that has not finished reporting itself can read above the nameplate rating. | Float32 | Wh | 1 | R |
| 57728 | 2 | Available battery energy Energy currently stored (B_AvailableEnergy). | Float32 | Wh | 1 | R |
| 57730 | 2 | Battery state of health 0-100; values outside that range are an initialising battery or a read glitch, not a reading. | Float32 | % | 1 | R |
| 57732 | 2 | Battery state of energy (SoC) 0-100; SolarEdge reports 0 % both for an empty battery and for a battery that is not present. | Float32 | % | 1 | R |
| 57734 | 2 | Battery status 0 = off, 1 = standby, 2 = initialising, 3 = charge, 4 = discharge, 5 = fault, 6 = preserve charge, 7 = idle, 10 = power saving. | UInt32 | - | 1 | R |
Notes
A SolarEdge Home Battery (400 V), Home Battery Low Voltage (BAT-05K48M0B) or Energy Bank has no network interface of its own: it is read through the host inverter's Modbus TCP server (port 502, unit ID 1; Modbus TCP is enabled in SetApp for the inverter). The battery block starts at 57600 (0xE100); a second and third battery sit at 57856 and 58368. IMPORTANT: this block is proprietary and is NOT part of SolarEdge's published SunSpec map. SolarEdge's own document "SolarEdge Inverters - SunSpec Logging" technical note v3.3 (October 2026, https://knowledge-center.solaredge.com/sites/kc/files/sunspec-implementation-technical-note.pdf) covers only the common model, the inverter models 101-103, the multiple-MPPT extension 160 and the meter models 201-204. The battery registers here come from the community integration WillCodeForCats/solaredge-modbus-multi (BATTERY_REG_BASE = {1: 57600, 2: 57856, 3: 58368}; its README states that battery support is "from documentation not publicly available from SolarEdge or through user discovery and may not be supported by SolarEdge") and from the independent implementation frenck/python-solaredged, which declares the same block as word-swapped little-endian Float32 at the same addresses - which is why this file sets word_order LowFirst. The inverter and meter blocks of the same device are big-endian high-first and remain in the solaredge-inverter seed; a client that polls both needs two documents. Registers 57718-57725 (lifetime charge and discharge energy, 64-bit) are omitted because the app has no 64-bit integer type, and the storage-control block at 57348 is omitted because its registers were reverse-engineered and their units and semantics are not documented by SolarEdge. Status values and the sign of the DC power readings follow the community integration (WillCodeForCats/solaredge-modbus-multi, custom_components/solaredge_modbus_multi/const.py BATTERY_STATUS and doc/Template-Sensors-for-Power-and-Energy.md).