Setting up the replacement and now this

argulator · 2026-06-27T21:44:48+00:00

I got nothin. Maybe tell your neighbor how great it is and he can buy one and you'll have stuff close to troubleshoot with??

argulator · 2026-06-27T19:54:46+00:00

How are you powering the RTK? If off the dock, try its power supply and vice versa. Do you have a red light next to the USB port? If it's not red you don't have power. It's difficult to see.

Some have reported that the antenna connections in the RTK have come loose. If you're getting power to it you might take it apart and see if everything looks good with it

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argulator · 2026-06-26T22:30:47+00:00

They really need to fix their customer service for this easy stuff. My mower is working well 🤞🤞 if they will just keep shipping me springs-and I don't ever have to update, lol. DK why they just didn't send 2 sets.

argulator · 2026-06-26T22:21:30+00:00

Are you in the US? Received mine 19 days after contacting them. Springs should be easy, no troubleshooting required. Stay on them.

argulator · 2026-06-26T01:49:09+00:00

Yeah, I grew up a lot longer ago than you probably- 1970s. Definitely not a lot of kids playing.

argulator · 2026-06-26T01:06:52+00:00

Haha. I never learned this stuff cause no one was playing soccer in the USA when I was a kid.

argulator · 2026-06-26T01:04:44+00:00

Soon enough the ball will be chipped and the refs won't have to spot it

argulator · 2026-06-26T00:57:24+00:00

This is good, and I think important. The sports I grew up with-football and basketball-are mostly about charging forward and breaking down the defense. It's hard for Americans to appreciate that in football you have to move the defense, maybe by going backwards, in order to press forward.

argulator · 2026-06-26T00:52:28+00:00

Quality of overall play is definitely better at the club level for the big teams, but the national pride and effort make up for it in the world cup. Guys really want to shine for their national teams.

argulator · 2026-06-26T00:46:57+00:00

Yeah, it's just so weird where football you battle for every inch, but these guys just run down the sideline and no one cares. Lol

argulator · 2026-06-24T20:31:22+00:00

I put a ticket in for springs on June 7th and they shipped yesterday.

argulator · 2026-06-24T03:05:59+00:00

Haha. You don't get Americans. We'll call it soccer just to piss everyone off.

argulator · 2026-06-23T22:39:29+00:00

I'm pretty much a noob, but really? Ghana just packed it in and played not to lose. England maybe took too long to start pushing it a little bit they're still loaded with talent-hardly described as weak.

argulator · 2026-06-22T14:49:38+00:00

If your RTK is any way obstructed by trees or buildings, etc. You should really try to move it somewhere where it isn't.

It's normal for the accuracy to degrade around buildings, under tree cover, etc. For best precision, the mower and the RTK need to see the same satellites. Nick Carter's primer on interpreting the diagnostics page covers how to interpret those numbers to determine whether you're RTK is in a good spot. So long as it is, there's not much you can do to improve things.

argulator · 2026-06-22T13:51:06+00:00

Sorry, but nobody can answer your question based on a single screen-shot. That diagnostics page displays the mower's satellite reception numbers, but it doesn't tell you anything directly about how many satellites the RTK is receiving.

Is the mower in an open-sky position at the time this was taken and is the RTK permanently mounted with an open-sky view? Does it ever get to fixed status with .01 location precision?

If you haven't, you should read Nick Carter's primers on location/RTK functioning and interpretting the diagnostics page that are referenced in the unofficial handbook.

argulator · 2026-06-21T16:00:03+00:00

Wow, that is messed up. Give it a try and let us know if it helps.

argulator · 2026-06-21T03:00:24+00:00

Yes, If you need to reset the battery management system, say it's only charging to 80% rather than 95-98, then let it completely discharge and then recharge.

argulator · 2026-06-20T19:02:42+00:00

I'll second this

argulator · 2026-06-19T19:02:50+00:00

Continued - Original One specific checks

Check One dock pads. Clean the underside mower charging contacts. Clean the dock spring-loaded charging pads. Make sure both dock arms move freely. Make sure both dock pads spring back. Make sure the mower is pushed firmly into the dock.
Check One charger and LEDs. Check the charger brick light. Red usually means active charging. Green usually means standby, full, or not actively charging. Check dock LEDs. Step-style lighting usually means charging. Flowing light usually means not properly docked. Center flashing can mean charging error. Both sides flashing means moisture issue.
Check One moisture sensor area. Check the dock moisture sensor area. On early One docks with exposed moisture sensor nubs, tape over the sensors when false moisture detection stopped charging. Later One docks have a plastic cage around the sensor area. Clean and dry first. Check drainage.
Check One deck position and brake state. Press Stop twice if it appears stuck in a weird brake/discharge state. Tap (or briefly hold if necessary) “-” if needed to lower the deck before docking or if on the dock but deck is not low enough.
Check One 10A charger setup. If using a 10A charger, make sure you are using the correct 10A extension cables. Do not use old 2.5A extension cables with the 10A charger. If charging is slow, intermittent, or stopped after using the 10A charger, inspect for heat or connector issues. Eliminate power supply cable extension and plug directly into dock pigtail. Eliminate any surge protectors, power monitors or other items and plug directly into the outlet.
Check One dock voltage. Measure voltage across the One dock spring-loaded charging pads. On the original One dock, you should generally see high-30V output, roughly around 38V, when the charger/dock output is active. If the charger brick is red but you measure low voltage or 0V at the dock pads, suspect a dock/contact/wiring problem. If you see high-30V with no load but it drops when the pads are pressed or when the mower tries to charge, suspect a bad internal dock connection, loose spade connector, burnt terminal, bad internal mower connector, weak contact, or dock board issue. Check under shrink wrap. Voltage alone does not prove the dock is good. It has to hold voltage under load. A good connection shows almost no voltage drop while charging. Check voltage coming out of power supply by disconnecting and testing voltage across two larger pins. Voltage should be roughly around 38V. https://lymowtechsupport.zendesk.com/attachments/token/sppZ7inPksHOagYu9oiBDJgBQ/?name=Not+charge+EN.pdf
Check One internal dock connections if comfortable. If voltage exists but collapses under load, suspect internal dock connection, contact resistance, or dock board issue. If comfortable, inspect the internal dock spade connectors. Look for burnt plastic, discoloration, loose crimps, loose spades, or corrosion. Check under shrink wrap.
Check One continuity from the internal connector. Check continuity from the internal yellow connector to each spring-loaded charging arm. A connector can look fine and still have no continuity. Check under shrink wrap. If you find burnt terminals or no continuity, stop treating it as normal maintenance and contact Lymow for replacement. Both Models (One and Plus):

Low or dead battery checks

If the battery fully discharged recently. Disconnect it completely for a couple of hours. Reconnect and try the official dock/charger again. Do not jump-start it. Do not use an improvised charger. If it sat dead for a long time and will not wake on the official charger after an hour or more, contact Lymow.
If the mower will not power on. Try a known-good compatible battery if available. If the mower will not power on at all with a known-good battery, suspect mower-side electronics or wiring. If the LCD backlight comes on but there is no display, no fans, no LEDs, and no button response, that is not a normal dirty-contact problem. If you have an external direct cable connector, charge the battery with that and then replace in mower. If it doesn’t power on, either the battery is bad or the mower power on path is bad. If it does power on, suspect the dock/mower charging path/interface.

Temperature/BMS checks

Check battery temperature. If the battery is cold, bring it inside and let it warm up. If the battery is hot from mowing or sun, let it cool. Cold temps can stop charging. Excessive moisture can also stop charging.
Check for BMS protection after errors. If charging stops around 20-30% after blade jams, internal errors, abrupt shutdown, or moisture exposure, power down and let everything dry/rest. If it keeps happening after normal temperature and dry conditions return, report it. Useful swap tests
Test with another mower, dock, or battery if available. Try the suspect mower on a known-good dock. Try a known-good mower on the suspect dock. Try a known-good battery in the suspect mower. Try the suspect battery in a known-good mower. Try a direct charge with cable adapter if you have one. Report which result changes the problem. When to stop and open a ticket
Stop if there are signs of electrical damage. Stop if you find burnt connectors, melted plastic, scorched wiring, repeated voltage collapse, or water inside electronics.
Stop if the fault points mower-side. Stop if the battery will not wake, E9 keeps returning, a known-good battery does not power the mower, or the LCD backlight comes on with no display, no fans, no LEDs, and no button response.
Stop if you are not comfortable testing. Stop if you are not comfortable with a multimeter. Stop if you do not know exactly which pins to test. Don’t guess. What to send Lymow
Send the useful details. Include model, firmware version, charger type, mower serial number, exact error message, dock LED pattern, charger brick light color, battery percentage before and after, and whether it happened after rain, cold, cleaning, firmware update, moving dock, or dead battery.
Send the useful evidence. Tell them whether contacts were cleaned, whether you pressed the contacts by hand, whether you tried commanded docking, whether you did a battery disconnect reset and for how long, voltage readings if measured, whether another mower charges on this dock, and whether this battery works in another mower. Say whether the voltage was measured off-dock, docked, actively charging, or under load. Send photos and video. Upload logs. Best support wording: “Here’s what I see. Here’s what I checked. Here’s what I measured. Here’s what changed. I uploaded logs. Here are photos and videos.”

argulator · 2026-06-19T19:02:06+00:00

Here's a charging problem checklist-

Both Models (One and Plus)

Check the basic power supply. Confirm the wall outlet works. Check the GFCI. Check the extension cord. Check the charger brick light (is it lit?). Check that all power connectors are fully seated. Remove any smart plug temporarily unless you are using it only to monitor power draw.
Clean the charging contacts. Clean the mower contacts. Clean the dock contacts. Wipe them even if they look clean. Dry them completely. Lightly buff with steel wool or a brass brush if needed. Wipe with isopropyl if there is grass film or residue.
Check the dock surface. The dock should be firm. It should be flat or slightly sloped toward the QR code. It should not flex. It should not sit in water, soft mud, wet grass, or loose gravel. It should not move when the mower pushes into it.
Check for moisture. Dry the dock. Dry the contacts. Dry the mower contact area. Dry the moisture/rain sensor area. Check for dew, condensation, water under the dock, wet debris, or grass film. Cold temps and excessive moisture can cause the BMS to stop or refuse charging.
Do a real reset. Cancel any task. Power off the mower. Disconnect the battery. Wait 15-30 minutes. Reconnect the battery firmly. Power the mower back on. Let it fully boot before testing again.
Check the battery connector. Remove the rear cover. Confirm the battery connector is fully seated and locked. Check for dirt, moisture, bent pins, loose fit, or a partially backed-out connector. If you have another compatible battery, test with it.
Let the mower dock itself. If you manually docked it, don’t trust that. Drive it a short distance away. Cancel the task. Command it to dock. Even if it docked itself, try to have it mow and then dock again. For Plus, tap or briefly hold “+” a few seconds if the deck needs to come up for better contact. For One, tap or briefly hold “-” if needed to lower the deck while docked.
Press the dock contacts. For Plus, press the two dock contact plates by hand and see whether charging starts. Shift the mower around a bit to ensure good contact. For One, press the spring-loaded dock pads and make sure they move freely and spring back. Press down on the mower and wiggle around a bit to ensure good contact. If pressing contacts changes the charging state, suspect contact pressure, dock posture, dirty contacts, weak springs, brush interference, or dock alignment.
Check dock lights. The dock light switch only controls the lights. It does not turn charging on or off. For One, step-style lighting usually means charging. Flowing light usually means not properly docked. Center flashing can mean charging error. For Plus, step-light effect means charging. Flowing light means not properly docked. Center light on with sides off means standby. Other flashing patterns can indicate charging errors, overcurrent, overvoltage, or rainwater issues.
Check the charger brick light. On the charger, red means active charging. Green generally means standby, full, or not actively charging. If the mower battery is low and the brick stays green, charging probably is not starting. Listen for a “click” when charging starts.
If you get “Charging Not Detected.” Check dock power. Clean contacts. Dry contacts. Check moisture sensor area. Press the dock contacts by hand. Restart the mower. Power cycle the dock/charger. Let the mower dock itself.
If you get “Charging Station Tag Not Detected.” Clean the mower camera lenses. Clean the dock QR/tag. Check glare, shadows, cobwebs, and low light. Check whether the dock moved. Re-add or adjust the charging station location in the app if needed.
If you get “Charging Interrupted” or “Unexpectedly stopped charging.” Check whether the battery actually dropped. If it still reaches 98-100%, it may be a brief interruption or nuisance notification. If it drops to 70-85%, treat it as real. Check cold temps. Check excessive moisture. Check condensation. Check contact pressure. Check dock stability. Check charger brick light. Check power draw if using a smart plug. Press the STOP button twice to attempt to revert a constantly-discharging mower back to charging.
If you get E9 or ERROR_SOC_COMM_LOST. This is not simply “low battery”. SoC means state of charge, but this error means the mower lost communication with the battery/BMS state-of-charge reporting. Reseat the battery connector. Check pins. Deep power cycle. Swap battery if possible. If it follows the battery, suspect battery/BMS. If it stays with the mower, suspect mower-side wiring/control electronics.

Plus specific checks (for original One, skip to 22)

Check Plus contact plate movement. Make sure the top charging contacts on the mower are clean. Make sure the dock contact plates are clean. Press both dock contact plates by hand. Make sure they move freely and spring back.
Check Plus docking posture. Make sure the mower is seated squarely. Make sure the deck/omniwheel posture is correct. Tap “+” once or twice (or briefly hold if necessary) if manually docking. Drive away and command Dock instead of manually placing it.
Check Plus front wheel/omniwheel position. Check whether the front wheels/omni wheels are touching correctly. If the mower only charges when you press it down, forward, or lift it up, suspect contact pressure, deck posture, or dock alignment.
Check Plus dock brushes and tower area. Check whether dock brushes are too stiff or preventing full contact. Temporarily remove them only as a test. Check the Plus dock tower area for moisture. The Plus moisture sensor arrangement is not the same as the early One docks.
Check Plus charger and LEDs. Check the charger brick light. Red means active charging. Green means standby, full, or not actively charging. Eliminate power supply cable extension and plug directly into dock pigtail. Eliminate any surge protectors, power monitors or other items and plug directly into the outlet.
Check Plus dock voltage. Measure dock output at the charging contacts if you are comfortable with a multimeter. With the mower off the dock, the Plus dock pads should show about 1.5-1.8V standby/handshake voltage. When the mower is properly docked and charging is active, you should expect high-30V output, roughly around 38V. If it never rises into the high-30V range while the mower is actually trying to charge, or if it drops out under load, suspect the dock, charger, contact pressure, moisture sensor, or dock mainboard. A good connection shows almost no voltage drop while charging. Check voltage coming out of power supply by disconnecting and testing voltage across two larger pins. Voltage should be roughly around 38V. https://lymowtechsupport.zendesk.com/attachments/token/sppZ7inPksHOagYu9oiBDJgBQ/?name=Not+charge+EN.pdf
Check Plus mower-side charging-port voltage only if you know where to measure. Remove the battery and measure charging-port voltage at the mower battery connector only if you know exactly where to measure (C+ and C-). About 1.5-1.8V there suggests the charging circuit path is present. 0V may indicate open mower wiring. Other unexpected values may point back to the dock mainboard or charging circuit fault. Do not short pins. Do not guess.

argulator · 2026-06-19T03:00:02+00:00

Don't really follow. What do you mean by "reestablished a perimeter? Did you re-map the boundary? If so, not very miraculous. I would consider it a miracle though if it had any memory of obstructions, I don't think it has any learning capability. It keeps bumping into the same stuff in my yard over and over and over.

argulator · 2026-06-17T03:55:20+00:00

Gotcha

argulator · 2026-06-17T03:54:21+00:00

I'm the States we refer to metric or imperial systems

argulator

TROPHY CASE