u/m_seitz

For the second time now, my L1 failed to get to the dock. This time, it managed to drive 80 m (260 ft), when the battery dropped from 15% to 0%. The last time, it dropped from 35% to 0%.

Does the mover learn and adapt to the discharge curve of the battery? My L1 is still kind of new and hasn't mowed much. Or is my battery crap and the voltage drops below the limit under stress (acceleration) when the charge is low, so that the BMS does an emergency cut off?

Since charging doesn't work on my L1 because of dirty contacts after a few minutes of mowing, docking is broken too. When returning to the docking station, it will just ram into the dock repeatedly because it doesn't get electrical contact to the charger and it ignores the bumper collision warning switches.

Therefore, I disabled "Recharge & Resume". The L1 is still supposed to return to the dock at 15%, just not charge. I saw that it wouldn't finish it's current mow when it was at 30%. 15 minutes later, it was standing in the middle of my yard. Dead.

Of course, the fucker has automatic brakes that work when its off (the charging handbrake is disabled). I guess it's shorting the engines to induce resistance against movement without the need for battery power. Cool. (Actually cool on a slope. But it should be an option that can be disabled.)

I carried it to the dock, only to see that it wouldn't charge with the deck at 6.5cm height. Not only are the charging contacts crap, the dock is too!

It didn't even manage to mow 200 m2 (2200 ft2 or 0.05 acres) on a full charge (98%)! WTF?! That can't be normal, can it?

Oh "nice", while writing this, the battery charged to 50%, supposedly from 0%. Definitely a glitch in the BMS or a bad battery. I love that the L1 and L1+ work for many people. But mine seems to be utter garbage 👿

(Yes, I am aware that I am half a year late with these complaints. The mowing season just started here, and I could use the L1 for the past 6 months because of a cold and wet autumn and a long winter.)

My L1 doesn't dock properly when returning from a mow with 15%. It drives onto the dock, bumps into its end, sits there for a while, and then decides to drive forwards again with the tracks spinning without moving.

My bumper switches were f-ed, and I replaced them with custom brackets and switches. According to the engineering screen (second digit after the FNT label) the L1 registers at least one switch when bumping into the dock. With some pushing, it registers both switches. They trigger early, but those four bumper springs are insanely hard to compress, and the L1 loses traction before it gets both switches activated. After some back and forth, I found that I had to clean the contacts with isopropanol anyways for the L1 to charge. Now I am wondering if it really needs both or any bumper switch to know it is docked properly, and relies on the charger contacts instead. With dirty contacts, it doesn't dock?