My Robot Doc

Known issue

LUBA 3: leaves the dock at about 80% for a scheduled task, instead of charging to 100%

A LUBA 3 owner reports the mower starting scheduled tasks at about 80% charge, with sleep mode turned off, and a YUKA mini owner says the same. On 5 November a Mammotion staff account said the technical team is working on a fix for a future update.

Status Open

Models
LUBA 3 AWD
First reported
31 Oct 2026
Last updated
06 Nov 2026
Affects
Robot body — not the app
LUBA 3 AWDFirst reported 31 Oct 2026Details
Models
LUBA 3 AWD
First reported
31 Oct 2026
Last updated
06 Nov 2026
Affects
Robot body — not the app

What to do next

  1. In the app, open the Battery and Charging page and take a screenshot. Note any charge limit set there, and whether sleep mode is on. Mammotion's account asked the owner in this report for that screenshot.

    More about this step

    Applies when: the mower leaves the dock for a scheduled task before it has charged to 100%.

    Worked if: you have the page Mammotion asked for, and you know whether a charge limit is set.

    Didn't work? Next: step 2 — Start a task, then upload a feedback log from the app. Send...

    Method: a Mammotion staff account's request in the cited thread

  2. Start a task, then upload a feedback log from the app. Send Mammotion your firmware version, the screenshot and the device name.

    More about this step

    Applies when: the mower still starts below 100%.

    Worked if: your case is with the one the technical team has, and support can find your log.

    Didn't work? Next: step 3 — Tell us your model, firmware version and the level the mower...

    Method: a Mammotion staff account's request in the cited thread

  3. Tell us your model, firmware version and the level the mower started at, and whether turning sleep mode off changed anything.

    More about this step

    Applies when: you have checked, or a new firmware has arrived.

    Worked if: the next owner can tell whether a version or a setting is behind it.

    Method: this page's own closing request

Robot body — not the app. See our app vs. firmware vs. RTK guide if you're not sure which one you're dealing with.

On this page
  1. What to do next
  2. What owners report
  3. What Mammotion said
  4. What we do not know
  5. Not the same as
  6. Sources
Before you start: open the app's Battery and Charging page and take a screenshot. Mammotion asked the owner in this report for it. No source gives a way around this: the one owner who turned sleep mode off says it made no difference.

What owners report

  • A LUBA 3 owner says that with the new sleep mode the mower is not charging to 100% before a scheduled task. It rests at about 80% and starts from there. Turning sleep mode off did not change it. Starting low, the mower has to go back to charge in the middle of the task, and that throws off the timing of the rest of a series of tasks1. The owner gave the firmware as 31.69, and after another scheduled task wrote that it had again charged only to 80%2.
  • A YUKA mini owner replied that it is the same on their mower, and that they want to be in control of the battery rather than the app5. The reply gives no model line or version.

What Mammotion said

A Mammotion staff account asked the LUBA 3 owner for the firmware version, a screenshot of the Battery and Charging page, a log uploaded after starting a task, and the device name3. On 5 November, after the owner uploaded the logs, the same account wrote that it had passed the issue to the technical team, that they are aware of it and working on a fix, and that it is expected to be resolved in a future update. It asked for patience and said it would pass on news4. The reply gives no date and no version.

Mammotion's 27 September notes for 2.3.31.69, the release for the LUBA 3, LUBA mini 2 and YUKA mini 2 lines, list "Fixed an issue where charging occasionally failed to reach the set battery level."6 That line is about charging that falls short of the level that was set. Whether it is the same fault as this one is not stated, and the owner above reports the 80% start on 31.69.

What we do not know

  • The cause. The owner links it to sleep mode. Mammotion has not said what it is.
  • Which mowers. One LUBA 3 owner has given a version. The YUKA mini owner has not.
  • A workaround. None is given in the thread.

Not the same as

A charge that stops part-way while the mower sits on the dock is on its own page. If you have set a charge limit such as 80% yourself, the shut-off page covers raising it to 100%. How sleep mode behaves over Wi-Fi and 4G is on the app-offline page.

Sources

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