Question about iRobot Roomba 4210 Bagless Robotic Vacuum

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What is voltage for recharger? I have a recharger that is listed as output of 17 volts, 4.74 amps. My docking station started smoking when I plugged it in. Is this the correct charger?

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Apparently not ! hahaha

Posted on Oct 21, 2013

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How do you know when the battery is charge


Hi there, it's Jack at Dyson.

If your machine's charge has been completely depleted, it will take a maximum of 3.5 hours to recharge again completely. When it's fully charged, the light on the charger will go out. You can either plug the charger cord directly into the machine, or store and recharge the machine in its docking station.

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I hope this helps, but if you'd like any further information you're welcome to contact us directly. You can reach us on 0800 298 0298 (UK), 1-866-693-9766 (US), 1-877-397-6622 (CA) or 1800 239 766 (AU).

Aug 29, 2014 | Dyson DC35 Handheld Vacuum

1 Answer

Green light on DC44 but nothing is happening


Hi Emma, it's Jack at Dyson.

I'm sorry to hear your DC44 Animal doesn't seem to be working correctly. If the green LED indicator on the machine lights up, but the machine itself doesn't run, this suggests the battery is flat. It could mean that it's not recharging correctly when connected to the docking station.

It would be worth temporarily disconnecting and removing the charger cord from the docking station and plugging it directly into the machine - the machine should recharge fully within 3.5 hours. If the machine then works as normal the charger cord may not have been corrected fitted to the docking station.

If you'd like further advice from our experts after you've given this a try, please call the Dyson customer Helpline on 0800 298 0298 (UK), 1-866-693-9766 (US), or 1-877-397-6622 (CA).

Jan 01, 2014 | Dyson DC16 Root 6 Bagless Handheld...

1 Answer

Irobot roomba 500


If you're sure the battery contacts are clean and the battery really is charged, then there is faulty circuitry within the Roomba that would have to be repaired or replaced.

Confirm that the battery is inserted with the metal contacts down so they make contact with the spring terminals in the battery compartment.

Visually confirm that the metal contact plates on the battery pack, and the spring terminals in the battery compartment are clean and shiny. If not, wipe with a clean cloth or paper towel, its OK to use a little water or rubbing alcohol on the cloth, if needed, and then dry it.

Visually confirm that the metal contact plates on the Roomba, and the spring terminals on the docking station's home plate are clean and shiny. If not, wipe with a clean cloth or paper towel, its OK to use a little water or rubbing alcohol on the cloth, if needed, and then dry it.

If you have a volmeter, measure the voltage between the contacts on the battery pack If it isn't something in the neighborhood of 14 volts and is 11 volts or less, the battery isn't fully charged.

Reinstall the battery.

For the moment, please connect the power adapter directly to the Roomba rather than the docking station to eliminate one possible faultly connection.

If the battery wasn't fully charged, or you weren't able to test it, try to charge the Roomba and then retest the battery voltage if you can. If the battery voltage was higher immediately after charging, but didn't get to 14 volts, the charger is good, but battery needs to be replaced. If the battery voltage was unchanged after attempting to charge the Roomba, the charging circuitry may be faulty. If there was no light patterns when you tried to charge it, and it was plugged in to a good outlet, then the power adapter or charging circuitry is definitely bad.

If you have no voltmeter and you cleaned the contacts and tried to charge the Roomba and it works, use the Roomba and then recharge using the docking station and see if it was just dirty contacts or it won't charge through the docking station. If it didn't work, you'll need to figure out if its the battery, the charging circuitry in the Roomba, or the power adapter. If there are no lights when you try to charge the Roomba, then Either the power adapter or the Roomba power circuitry is defective, but without a voltmeter you can't find out which one, and there's no way to know if the battery is good or bad, but you know Roomba wasn't trying to charge it. If there are lights when you try to charge the Roomba, then at least you know the power adapter is good. Unfortunately, without being able to test something there's no way to distinguish between a charger that won't deliver a charge to the battery and a battery that won't accept a charge. If you want to take a guess then a bad battery is more common and less expensive to fix.

Jul 07, 2012 | iRobot Roomba 560 Robotic Vacuum

1 Answer

I have an XL Silver Upright Vacuum with a docking Station. Bag will not stay on and dirt & dust builds up inside the Vacuum. Big mess to clean out. Also vacuum is hard to push. Is it because BAG...


The docking station is not on properly...Make sure that you have the outer (permanent) bag pushed down over the lip of the vacuum. The docking system needs to be behind the lip also. This keeps both the inner and outer bag firmly attached. If it is hard to push, you may look into replacing the roller brush. They start breaking down..kinda like a toothbrush. It will make it extremely hard to push.

Aug 30, 2011 | Oreck XL Ultra Bagged Upright Vacuum

1 Answer

My simer ace in the hole a5000 will not charge my 2.5 year old battery. The battery voltage reads 10.75 volts. I replaced the twelve volt charger and it originaly lit the yellow charging light , but it no...


I does sound like a controller issue. Try testing the charging output (be careful, who knows what the voltage may be coming out) I would say it is the battery but the yellow light thing has me thinking you are right. That thing has been sitting there maintaining the battery for 17 years, it is probably tired. The other bad news is if your battery has been sitting at that low volta.ge it may have a greatly reduced capacity now. Hope this helps some. .

Jun 09, 2011 | Vacuums

1 Answer

I unplugged the docking station and now does not work


I actually had the same issue with mine.. it was 6 years old and just stopped finding the docking station. Also wouldnt take a charge. So I just eliminated the docking station. The stations power cord will charge the unit. Hope this helps.

Sep 12, 2009 | Roomba Robotic Floor Bagless Vacuum

2 Answers

Model4210battry won't recharge, is it worth ordering a battery?


don't buy a new battery yet. you can reset the battery by charging for 16 hours, if this does not work, you need to take the battery out, push and hold the power button on your roomba for at least 15 seconds then reinstall the battery. plug in the charger directly to roomba not the docking station and charge until the battery light on the roomba is green. do not interrupt the battery charging cycle. after, leave the roomba charging for an additional 3 days or 72 hours. after, run roomba in max mode and run it till the battery is completely depleted. this will improve the battery overtime by charging again for 72 hours and depleting the battery. do this 3 or 4 times. and the battery should get better

Jun 28, 2009 | iRobot Roomba 4210 Bagless Robotic Vacuum

1 Answer

After charging overnight, Roomba only runs about 25 minutes before shutting down with a red light.At this point the battery measures 15.13 volts ( about 1.26 volts per cell ) My hobby experience is that a...


Reset the Roomba by removing it from the charger, then holding "spot" and "dock" for about twelve seconds. When you let go, the unit will play an ascending series of notes. Then recharge it overnight. If the run time is still short, give Customer Support a call-- be sure to have the Roomba with you when you do.

Jun 07, 2009 | iRobot Roomba 560 Robotic Vacuum

2 Answers

Roomba Docking Station


Probably not, unless you just have to have the docking station. My roomba always had trouble mating with my docking station so I never used it. I just plugged it directly in to will using the AC adapter.

Oct 29, 2008 | Roomba Robotic Floor Bagless Vacuum

1 Answer

The PCB controlling the battery charger is overheating and the led dosen't illuminate when charging, could the led be shorted internally causing the problem. The vacuum in question is a Hoover Freejet...


The problem was caused by the failure of 7 of the 1.2volt cells in the battery pack, the other problems were symptoms of the battery pack failure. Replaced the thermal cutout a 131 degree C component on the PCB in the docking station for the vacuum when recharging, I also had to change the LED which had also failed this is a Red 12 volt 5 mm dia component observe the correct polarity when replacing. Also make sure when replacing the thermal cutout that it is secured tightly to the resistor it sits along side, otherwise it will not respond quick enough if there is another failure.

Jun 22, 2008 | Vacuums

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