Fullcharged new battery, light is green on charger, brandnew never used WF502B and nothing, no light clicked it severl times.

Question edited for clarity, full make model (what it is).

Did you follow Section 9 about fully charging the battery, pressing and holding the button?

Charging Instructions 1. Plug the charger into the mains - the charger indicator light will be green.
2. Turn on the battery by press and holding the power button until the green light is illuminated.
3. Plug the battery into the charger. The charger light will turn from green to red to indicate the charging process has started.
4. Once the battery is fully charged, the charger status light will be

https://www.powakaddy.com/wp-content/uploads/2021/02/LATE-2022-FX3-OWNERS-MANUAL_01b.pdf

If that doesn't fix it, it will be a warranty issue. Click Support on top left.

https://www.powakaddy.com/manuals-and-instructions/

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sounds like defective. personally I would return it to HD for a new one. HD money back 90 days from purchase.

Mine was doing same thing. was working flipped upside down to replace the rubber blades then nothing.Display dark only it has green led around orange button. Unplugging batteries didn't help.pressing buttons nothing. holding buttons down nothing. Found this on another site. Connect the vac to your computer and place it on charger at same time. Press and hold the orange button for about 10 sec. or so. it should turn of the LED then let up and repress button. vac should then reboot. Unplug computer. Wouldn't hurt at this time to tell it you put in "New Batteries" but first remove any scheduled cleaning days to clear its memory. After doing the New battery, reset the schedule and let it charge. After that it maybe a good time to check your program version and update it from the Neato web site to the newest update. The newest update does wonders for the battery run time issues.

You probably have a defective battery connection or circuit on the motherboard. It will have to be replaced or repaired.

Janice check your charger it could not be charging the batteries. Now always charge your batteries overnight while you sleep When you get up lights on the charger should be red and green if they are red and yellow then the charger hasn't fully charged the batteries and overnight should be more than enough time to charge fully. This could indicate a bad battery remember new doesn't always mean good. Like they say always charge before use and this goes for new batteries too you need to charge new batteries nightly for 10-15 days before they start operating at 100%. If when you plug in the charger before bed and the lights are red and green then there is a problem with the charger or the batteries or the charger circuit Hope this helps you

You need to recycle it in the charger. do you have a button on the charger to do that with? If not try switching chargers.

MStrong The charger will not charge batteries that are reading that low Replace the batteries and try the charger again. Remember to always charge before use and never charge longer than 12-16 hours. Get into the habit of charging overnite on scooters used everyday and once a week on seldomly used scooters always sore the scooter fully charged and if storing for a longer time remove the batteries and store fully charged. ope this helps you

This has happened to me. The transformer in the charger is dead.
you can test the charger by plugging it in and using a multimeter to test for current.
if you get nothing, it is dead.
You will need to get a new charger pack.

Hi, as per your information your camera 2 years old but not used much. You buy a new battery 1st time when you charged you see the gree light. But camera not working. When you try to charge the battery again you seen the red light. Its mean your charger have a problem. So what you do now? Ok try these.
Remove the power connection of the charger. then fixed the battery there slowly & properly. After that plug on the charger again. If the same thing happens then unplug the charger & plug in in different point. Then see what showing. If again red light then wait 1 hours and waiting for green signal. If there is no green signal showing then visit a service center with your charger. Tell them your problem. They will fixed the charger for you. Don't worry your camera is ok.
Your new battery or your charger one of then damaged. Thanks & waiting for your feedback.

get a new power supply. Try E-Bay