Question about Friendly Robotics RoboMower 21Inch Automatic Cordless Electric Lawn Mower and Docking Station

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My rl500 robomower will not charge when pluged in-just a row of dashes desplay on and off and a sound of a clunck or a click is heard.

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Sound like a problem with the power inverter board. It may have swollen or blown or leaky capacitors which control the current flow through the board. This board is attached to where the plugin cord attaches too.

Posted on Oct 10, 2010

  • stintenalle Jul 05, 2011

    i have the same problem, looked at the board and it seemed fine to me. i have never used the mower before, and i live in norway. using an AC converter so i thought maybe something was wrong with that, wrong voltage or something. should i perhaps try to change that board or is it easily fixed if some electrician looks at it?


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It's just the battery is too low to charge. If battery goes below 21v it won't charge.

Either plug it in leaving it to try and charge for a few hours. Then unplug it remove battery. Leave 24hrs and try again

Worst case split the two batteries and charge them using car charger. Once believed to be charged. Test the voltage. If less than 10v on either battery. Then you need new batteries.

Posted on Jul 21, 2015


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