Question about iRobot Roomba 4210 Bagless Robotic Vacuum

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4210 battery light is full charge. runs for 5 sec. and nedds to be recharge again

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Roomba's are noted to catch dust inside inwhich they will not operate correctly. Remove the entire housing parts and clean out all existing dust in this machine. It will run much better

Posted on Jul 05, 2010

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Charged but won't run


I had the same problem earlier today. By chance I plugged it in again to the recharger, but this time, just the battery, and it started recharging again! It did a full recharge, and what do you know, the vacuum works again!
I had left it in the recharger all night originally and it didn't like that it seems. So recharging it again, just was the battery and when it had finished recharging, attached it to the motor part and it worked perfectly.
Hope this helps someone else.

Jun 15, 2014 | Dyson DC44 Animal Cordless Vacuum

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I have iRobot Roomba 4210 and I have a problem with charge battery. The battery is new. When I charging a battery in other iRobot Roomba the battery was full charged. When I charging in my iRobot Roomba...


The charging circuit on the main board is fried. This is a common issue. You need some good electronic repair skills, and equipment, to replace the problem components

Nov 23, 2009 | iRobot Roomba 4210 Bagless Robotic Vacuum

1 Answer

Scooba battery light turns red as soon as irobot starts


Do you leave the battery on charge long enough? Try 4-hours up to overnight. If so, then the battery is probably at the end of it's useful life. Getting a new battery depends on cost versus life expectancy of the robot and whether it does the job you want it to do.

Jul 19, 2009 | iRobot Roomba 4210 Bagless Robotic 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

Roomba starts and stops.


try pulling the battery out and holding down on the power button for 5 secs. if this doesn't fix the problem--you need a new battery.

Jun 06, 2009 | iRobot Roomba 4210 Bagless Robotic Vacuum

2 Answers

Scooba not working after full recharge


NiCD and LiOn batteries have this tendency. They work great for a year, then slowly die off. The problem is you. When new, the device MUST be charged for 14hr nonstop, then every 2-3 months run dead, and recharged again 14hrs nonstop. This is done so the CPU of the Roomba (cool toy) KNOWS what DEAD is and what FULL is. It does this by measuring the amount of currrent flowing thru a very precise resistance. If you do hit and miss charge cycles of the roomba or leave it charging too long, it either develops a flase memory of the above two conditions, or gets HOT and the electrolyte paste dries out. Fix is to wear it out, charge 14hrs, wer it out againand repeat 3-4x. Then recharge and use. If that doesn't fix it, the batteries are too dried and need to be replaced.

Apr 08, 2009 | iRobot 5800 Scooba Vacuum

1 Answer

Roomba 4210 replaced aps battery still does not work


Try cleaning the silver contacts on the battery as well as the charging station with a small amount of rubbing alcohol such as an alcohol pad.
Also check to make sure the dirt reserve is completely empty. Also check that the briushes are clear and can move freely.
This 'not charging' is a very common problem with the Roomba and the manufacturers continue to sell rechargable batteries that are no good even though they are aware of the problem.

Mar 29, 2009 | iRobot Roomba 4210 Bagless Robotic Vacuum

1 Answer

Irobot discovery


It sounds like the battery is shot. These batteries only work for a couple of years and then they won't accept a charge any more. A common mistake people make is recharging them before they need it. This will make the battery "lazy"
Contact the manufacturer for more info.

Dec 09, 2007 | iRobot Roomba 4210 Bagless Robotic Vacuum

1 Answer

Battery light goes red after bumping/backing up


try this: turn it upside down and run it-then bump it to reverse it...same result?

May 29, 2007 | iRobot Roomba 4210 Bagless Robotic Vacuum

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