Question about Friendly Robotics Rl1000 Robomower

2 Answers

I am struggling with a strange problem preventing me from using both my RL-1000's: I have stored both machines inside in a dry location together with their fully charged batteries. When I used them in Fall I had no problems, but now both machines keep 'rebooting' when I insert the battery pack's. Making the startup sound and showing the software version V4.33 in the displays. This procedure repeats on and on, without ever starting any of the machines. No buttons react, so I can only pull out the batteries preventing me from mowing the lawn. Any ideas? Thanks in advance. Jesper

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  • Jesper May 25, 2011

    Thanks for your response, however I would be surprised if all three batteries are unable to give enough 'juice' for the machines. Anyway I measured the output voltage from one of the battery packs and it says 26.2 volts. Isn't that enough? I would expect that 24 volts would be sufficient.



    Thanks.





    Jesper.



    Denmark

  • Jesper May 28, 2011

    I have tried three full charged batteries each measuring 24-26 volts in output.

  • Jesper May 28, 2011

    Thanks fredy2.

    Have three fully charged batteries each showing 24-26 volts on a meter. All three batteries cause the same error on both rl-1000's unfortuntaly. Regards, Jesper

  • Anonymous Jun 24, 2017

    Hello Jesper - did you ever get to the bottom of this problem? I am having the same problem with an RL2,000

  • Pat Cullinane
    Pat Cullinane Jun 24, 2017

    Hello Jesper - did you ever get to the bottom of this problem? I am having the same problem with an RL2,000

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The batteries, if you had not trickle charged them while stored, have probably bled down due to electrical leakage to a point below which the unit will not run. NiCad batteries are noted for this. Try to charge the batteries to restore operation. Check the voltage of the batteries since if a cell shorts, they will not charge properly.

Posted on May 26, 2011

  • Fred Yearian May 28, 2011

    Unfortunately the voltage reading is not enough to gaurantee operation. One has to do a load test, that is testting them under load, as the common failure is increase of internal resistance such that when lod is applied the voltage drops drastically. If you can apply say a two amp load and find the voltage does not drop significantly, then we can expnerate the batteries. Assuming that you can do that test and thee batteries pass, the next thing is to look for a problem with interlocks... ie safety devices that prevent personal injury. I don't have schematics for this, but there are likely one or more safety devices that prevent the unit from starting if there is any danger. ALSO the unit has an anti-theft system. I suspect that interlock MIGHT be what is blocking startup. You likely have to have it in its base station. I don't have the manual on the unit that describes the anti-theft interlock but that is the first place I would look assuming the batteries are good. The unit likely communicates during its self test and unless it receives the code via the radio link it will not boot up. How the anti-theft works might involve close proximity to the base station OR possibly the hand held controller. Check batteries in the handheld too...

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Welcome to FixYa!
It looks like a battery problem. The Robomower should be kept in charging mode when not in use. The batteries are designed that way. The batteries will be damaged if you have kept it a long time without being charged. See details below.
Of all the areas regarding the RoboMower, proper charging of the Power Pack is second only to safety in importance. Failure to follow the charging guidelines will result in poor performance and a short Power Pack life. After the completion of any daily cutting session it is very important to bring the RoboMower to its storage area and plug it into the charger as soon as possible, preferably within 6 hours from the time it stopped. The standard charger is actually a power supply, where the voltage output is DC and the current flowing to the Power Pack for re-charging is regulated inside the mower. The Docking Station utilizes a similar type of power supply, but it is connected to the Docking Station and is approved for outdoor use. The charging system and Power Pack are designed such that they can remain plugged in at all times of non-use without concern to over charging, over heating or damaging the Power Pack. In fact, it is the preferred way to maintain your Power Pack, always keep it plugged into the charger when not being used.
Thank you for using FixYa. Have a great day. Jas247

Posted on May 25, 2011

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