Case study

Marstek Offline Endpoint: reconstructing Venus cloud replies

Marstek Offline Endpoint recreates the telemetry upload and time replies expected by Marstek Venus E and D batteries on a local server. The author traces firmware conditions behind network resets, implements the response path in a container and records uploaded measurements locally. The author reports that a Venus D on Control firmware v150 stopped its periodic network interruptions during the documented observation.

Targets: Firmware · Protocol
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-08
Evidence class: C2 code & docs, no demo or download

Stars: 13
Last commit: 2026-11-06
Language: JavaScript
License (GitHub): MIT

GitHub data as of 2026-11-10

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Evidence

Observed: Code, documentation and a demo observed; no download method found.
Checked: 2026-11-08

How evidence classes are assigned

Requirements & limits

Prerequisites: A Marstek Venus battery, a local Docker host with ports 80 and 443 available, and DNS or traffic redirection to that host.
Prerequisites: Set TZ to the device's local time zone for time replies.
Testing evidence: The v151 behavior is based on decompiled code and has not been measured on a v151 device.
License: MIT License.

Cite

BibTeX

@misc{marstek-offline-endpoint-case,
  title = {{Marstek Offline Endpoint: reconstructing Venus cloud replies}},
  howpublished = {\url{https://github.com/sphings79/Marstek-offline-endpoint}},
  url = {https://github.com/sphings79/Marstek-offline-endpoint},
  urldate = {2026-11-08},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/marstek-offline-endpoint-case/}}
}

Plain text

Marstek Offline Endpoint: reconstructing Venus cloud replies. https://github.com/sphings79/Marstek-offline-endpoint (accessed 2026-11-08). Awesome REA entry: https://awesomerea.org/resources/marstek-offline-endpoint-case/

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About this entry

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Primary sources

README.md GitHub · sphings79/Marstek-offline-endpoint · Revision faea0bd
docs/HOW-WE-FOUND-IT.md GitHub · sphings79/Marstek-offline-endpoint · Revision faea0bd