Venus D
Turned on
Marstek Energy Storage
Control and monitor Marstek energy storage systems via Modbus TCP
Marstek Homebatteries - Complete Energy Storage Management
Transform your home into a smart energy powerhouse! This Homey app brings full control of your energy storage system directly to your fingertips, enabling intelligent automation and optimal energy management like never before.
Unlock Your Energy Independence
Take complete control of your home's energy storage with sophisticated automation capabilities that adapt to your lifestyle and energy needs. Whether you want to maximize solar self-consumption, take advantage of dynamic energy pricing, or ensure backup power during outages - this app makes it all possible!
Supported devices
Flow cards
Click on a device above to show related Flow cards only.
When...
Venus D
Turned off
Venus D
The voltage changed
Venus D
The electric current changed
Venus D
The power changed
Venus D
The temperature changes
Venus D
The battery charging state changed ...
Venus D
The generic alarm turned on
Venus D
The generic alarm turned off
Venus D
Is disconnected
Venus D
Is connected
Venus D
The battery level changed
Venus D
The target power changed
Venus D
The target power mode changed to ...
"Homey" means Homey controls the device’s target power. Other modes are determined by the device.
Venus D
Charging status changed
Venus D
Battery started charging
Venus D
Battery started discharging
Venus D
Battery level dropped below threshold
Venus D
Battery level rose above threshold
Venus D
Battery temperature too high
Venus D
Battery temperature too low
Venus D
Battery backup mode changed to Mode
Triggered when battery backup mode is enabled or disabled
Venus D
Force charge mode changed to Mode
Triggered when force charge mode changes
Venus D
Operation mode changed to Mode
Triggered when battery operation mode changes
Venus D
Force charge power changed to Power (W) W
Triggered when force charge power setting changes
Venus D
Force discharge power changed to Power (W) W
Triggered when force discharge power setting changes
Venus D
Force SOC target changed to SOC Target (%)%
Triggered when force SOC target setting changes
Venus D
Battery fault detected
Triggered when any battery fault is detected
Venus D
Battery warning detected
Triggered when any battery warning is detected
Venus D
Grid fault detected
Triggered when grid-related faults are detected
Venus D
Battery system fault detected
Triggered when battery system faults are detected
Venus E
Turned on
Venus E
Turned off
Venus E
The voltage changed
Venus E
The electric current changed
Venus E
The power changed
Venus E
The generic alarm turned on
Venus E
The generic alarm turned off
Venus E
Is disconnected
Venus E
Is connected
Venus E
The temperature changes
Venus E
The battery charging state changed ...
Venus E
The battery level changed
Venus E
The target power changed
Venus E
The target power mode changed to ...
"Homey" means Homey controls the device’s target power. Other modes are determined by the device.
Venus E
Charging status changed
Venus E
Battery started charging
Venus E
Battery started discharging
Venus E
Battery level dropped below threshold
Venus E
Battery level rose above threshold
Venus E
Battery fault detected
Triggered when any battery fault is detected
Venus E
Battery warning detected
Triggered when any battery warning is detected
Venus E
Grid fault detected
Triggered when grid-related faults are detected
Venus E
Battery system fault detected
Triggered when battery system faults are detected
Venus E
Hardware fault detected
Triggered when hardware faults are detected
Venus E
System fault detected
Triggered when system faults are detected
Venus E
Battery temperature too high
Venus E
Battery temperature too low
Venus E
Battery backup mode changed to Mode
Triggered when battery backup mode is enabled or disabled
Venus E
Force charge mode changed to Mode
Triggered when force charge mode changes
Venus E
Operation mode changed to Mode
Triggered when battery operation mode changes
Venus E
Force charge power changed to Power (W) W
Triggered when force charge power setting changes
Venus E
Force discharge power changed to Power (W) W
Triggered when force discharge power setting changes
Venus E
Force SOC target changed to SOC Target (%)%
Triggered when force SOC target setting changes
And...
Venus D
Is turned on
Venus D
The battery charging state is ...
Venus D
The generic alarm is on
Venus D
Is connected
Venus D
The target power mode is ...
"Homey" means Homey controls the device’s target power. Other modes are determined by the device.
Venus D
Battery backup mode is Mode
Check if battery backup mode is enabled or disabled
Venus D
Force charge mode is Mode
Check current force charge mode
Venus D
Operation mode is Mode
Check current battery operation mode
Venus D
Force charge power is greater than Power (W) W
Check if force charge power is above a threshold
Venus D
Force discharge power is greater than Power (W) W
Check if force discharge power is above a threshold
Venus D
Force SOC target is greater than SOC Target (%)%
Check if force SOC target is above a threshold
Venus D
Battery is charging
Venus D
Battery is discharging
Venus D
Battery level is above Percentage (%)%
Venus D
Battery level is below Percentage (%)%
Venus D
Temperature is above Temperature (°C)°C
Venus D
Max charge power limit is below Power (W) W
Check if the device protection system is limiting charge power below a threshold (e.g. due to low temperature)
Venus D
Max discharge power limit is below Power (W) W
Check if the device protection system is limiting discharge power below a threshold (e.g. due to low temperature)
Venus D
Charging cutoff SOC is above Percentage (%)%
Check if the charging cutoff SOC setting is above a threshold
Venus D
Discharging cutoff SOC (reserve) is above Percentage (%)%
Check if the discharging cutoff SOC (reserve) setting is above a threshold
Venus D
Battery has a fault
Venus E
Is turned on
Venus E
The generic alarm is on
Venus E
Is connected
Venus E
The battery charging state is ...
Venus E
The target power mode is ...
"Homey" means Homey controls the device’s target power. Other modes are determined by the device.
Venus E
Battery backup mode is Mode
Check if battery backup mode is enabled or disabled
Venus E
Force charge mode is Mode
Check current force charge mode
Venus E
Operation mode is Mode
Check current battery operation mode
Venus E
Force charge power is greater than Power (W) W
Check if force charge power is above a threshold
Venus E
Force discharge power is greater than Power (W) W
Check if force discharge power is above a threshold
Venus E
Force SOC target is greater than SOC Target (%)%
Check if force SOC target is above a threshold
Venus E
Battery is charging
Venus E
Battery is discharging
Venus E
Battery level is above Percentage (%)%
Venus E
Battery level is below Percentage (%)%
Venus E
Battery has a fault
Venus E
Temperature is above Temperature (°C)°C
Venus E
Max charge power limit is below Power (W) W
Check if the device protection system is limiting charge power below a threshold (e.g. due to low temperature)
Venus E
Max discharge power limit is below Power (W) W
Check if the device protection system is limiting discharge power below a threshold (e.g. due to low temperature)
Venus E
Charging cutoff SOC is above Percentage (%)%
Check if the charging cutoff SOC setting is above a threshold
Venus E
Discharging cutoff SOC (reserve) is above Percentage (%)%
Check if the discharging cutoff SOC (reserve) setting is above a threshold
Then...
Venus D
Turn on
Venus D
Turn off
Venus D
Toggle on or off
Venus D
Set the target power W
This also switches the target power mode to Homey. For EV chargers, charging is automatically started or stopped.
Venus D
Set the target power mode to ...
To control the target power of this device via Homey, select "Homey". Other modes are determined by the device.
Venus D
Set battery backup mode to Mode
Enable or disable battery backup mode
Venus D
Set force SOC target to SOC Target (%)%
Set target SOC setting for force (dis)charge
Venus D
Set charging cutoff SOC to Percentage (%)%
Set the SOC level at which charging stops (40-100%)
Venus D
Set discharging cutoff SOC to Percentage (%)%
Set the SOC reserve level below which discharging stops (12-30%). WARNING: Setting this below 15% is not recommended as it may reduce battery lifespan.
Venus E
Turn on
Venus E
Turn off
Venus E
Toggle on or off
Venus E
Set the target power W
This also switches the target power mode to Homey. For EV chargers, charging is automatically started or stopped.
Venus E
Set the target power mode to ...
To control the target power of this device via Homey, select "Homey". Other modes are determined by the device.
Venus E
Set battery backup mode to Mode
Enable or disable battery backup mode
Venus E
Set force SOC target to SOC Target (%)%
Set target SOC setting for force (dis)charge
Venus E
Set charging cutoff SOC to Percentage (%)%
Set the SOC level at which charging stops (40-100%)
Venus E
Set discharging cutoff SOC to Percentage (%)%
Set the SOC reserve level below which discharging stops (12-30%). WARNING: Setting this below 15% is not recommended as it may reduce battery lifespan.
Support
Having an issue with this app? Contact the developer via the developer website.
What’s new
Version 1.5.8 — Polling resilience and reachability signalling. (1) Per-register error isolation in the poll cycle for both Venus E and Venus D - previously one Modbus timeout on any register (e.g. AC current at 32201) aborted every read after it in the same batch, leaving voltage fresh while power, SOC, battery-power and everything else silently went stale for the whole cycle. Reported by a 3x Venus V3 tester on v1.5.7 - matched the pattern exactly. Now each register-read is guarded so a single timeout skips only that capability's update; every downstream read still runs. Cross-cutting derivations (target_power range, onoff, target_power_mode) fall back to the previous capability value or skip entirely when their upstream mode reads failed, instead of writing garbage. (2) alarm_connectivity capability added to both drivers - installed for existing devices automatically. The pollcycle now toggles this standard Homey boolean instead of calling setUnavailable, so a Modbus outage no longer trips flow errors on every automation referencing the device; instead automations can branch on the 'is disconnected' condition to skip acting on stale data. setUnavailable still triggers on genuinely-permanent issues (wrong-driver detection, static-info retrieval failure at init). (3) Venus E 'Battery is charging' / 'Battery is discharging' condition cards fixed - they read a phantom capability name ('charging_status') that was never written, so the cards always returned false regardless of actual state. Now read the correct 'battery_charging_state' capability that the poll cycle actually writes to. Venus D was not affected.
Marstek Energy Storage
Marstek Energy Storage is not compatible with the selected Homey.
Marstek Energy Storage will install on Homey shortly.
Changelog
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