No voltage and currents for Marstek B2500-D 113.1

[eloo]

Device Model

B2500-D

Firmware Version

113.1

Installation Method

Other

Issue Description

Hi,

i have two b2500-d batteries.
One with firmware 108.7 and one with firmware 113.1

And it looks like the one with 113.1 does not report Input voltage and other data .
It looks like the following data is not available:

• input voltage
• input current
• output voltage
• output current
• host battery voltage
• host battery current

Not sure if this is a bug in the firmware of the battery, config related or a bug in hm2mqtt.

hm2mqtt Configuration

MQTT_BROKER_URL: mqtt://xxxx:1883
MQTT_PROXY_ENABLED: true  # Enable proxy for multiple B2500s
MQTT_PROXY_PORT: &port 1890
MQTT_POLLING_INTERVAL: 15
POLL_CELL_DATA: true
POLL_EXTRA_BATTERY_DATA: true
POLL_CALIBRATION_DATA: true
DEVICE_1: HMJ-2:xxxxx 
DEVICE_0: HMJ-2:xxxx

hm2mqtt Logs

Hame Relay Configuration

Hame Relay Logs

[github-actions]

Thanks for the report — I can take a look, but I’ll need logs to debug this.

Please add:

1. hm2mqtt logs (DEBUG)

   • Home Assistant → Settings → Add-ons → hm2mqtt
   • In the add-on configuration, set:
     • log_level: debug
     • debug: true
   • Restart the add-on
   • Then paste the relevant log excerpt here (around the time the problem happens)

2. Hame Relay logs (DEBUG)

   • In the Hame Relay add-on, enable debug logging (log level debug) and restart
   • Paste the relevant log excerpt here

Important: please redact/replace any IDs (deviceId/MAC, tokens, MQTT credentials, etc.) before posting.

[Bazingli]

Same issue for my HMA-1 battery. But for my HMJ-2 battery with firmware V116 the data is available.

[eloo]

I have just received an update from the support to v116 and can confirm that the data is working with v116.

So i would expect this is an issue in v113, maybe this can be added to "known issues" or so?

[Gronkdalonka]

Can confirm, v113.8 did not send any voltage and current data and after updating to 116.6 the data is provided by the battery

Edit: fixed version numbers

[thowiegit]

@Gronkdalonka there are no v133.8 or v166.6 out.
maybe you are referring at v113.8 and v116.6?

Besides that, yes, v116.6 is delivering voltage and current again.

[Gronkdalonka]

@Gronkdalonka there are no v133.8 or v166.6 out. maybe you are referring at v113.8 and v116.6?

-.- yes , i fixed the numbers