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14.4 volt vac wont charge up power checked to unit ok

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Then the battery has failed, they last around two years in normal use.

Posted on Jul 15, 2009

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Posted on Jan 02, 2017

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Need charging station for Shark Cyclonic 12 volt cordless power-vac


Buy a replacement charger from the Shark Cyclonic dealer. It is important that the specs match the battery, one or two volts higher can shorten the battery life by quite a large amount.

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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

My Generator Guardian by Generac 20K Model 0055060 now the battery charger for this unit the output voltage is 15.4 VDC Is this correct for this unit? Thanks Carmelo from Miami.


Hello ,this unit has a smart battery charger. This type of charger will charge at a higher voltage to maintain the battery by keeping the plates clean. Have you checked the charging voltage at various times to verify that the voltage is always at 15.7? The voltage should level off at around 14 volts. Also, try another voltmeter just to confirm the voltage. Some meters can read differently. I had a meter that did this for me and it drove me slightly nuts. I hope this helps.

Jan 11, 2011 | Vacuums

1 Answer

We ran our Platinum Series 18 volt hand vac until it stopped -- charged the battery overnight but it did not charge. is there a problem with the battery charger or what could cause this?


Most problems with what you have stated have to do with bad contacts between the hand held unit and the battery charger. With the charger unplugged, make sure the contacts on both the charger and hand held unit are clean and not bent. Check to see what the "Light Indicator" should be when charging and reinsert the unit into the charger. If the light does not show what it is supposed to show, move the hand held unit around a bit to see if you can make the connection better.
If this does not do the job, depending on the age of the unit, might be time to replace the battery.

Oct 06, 2010 | Black & Decker CHV1500 Bagless Handheld...

1 Answer

No power to my vac.


This sounds more to be a switch or motor failure if the outlet is OK, and the unit will not work.

Sep 25, 2009 | Hoover SteamVac F5914-900 SpinScrub...

4 Answers

Shop vac 90L400 stopped working won't start


I had the same problem with the same model. Turned out to be the thermal fuse on the motor housing, between the switch and the windings. Took it apart and replaced the melted solder with 14 guage copper wire. Works fine! No thermal protection but I don't use it for long at a time anyway. Check the switch for continuity, if good then check the thermal fuse for continuity. If good, it's the motor.

Oct 19, 2008 | Shop Vac 925-13 Canister Wet/Dry Vacuum

2 Answers

Power to operate beater bar


Hello,
I am taking ashot at providing you with enough information that you will be able to work thru your problem with it.Here is a link to a standard installation kit http://www.thinkvacuums.com/instructionas.pdf
and this one
http://www.thinkvacuums.com/easyflo/install_wo.htm

If I understand your question, the two low voltage terminals should be shorted together in order to activate the 120VAC to the brush motor. As rge drawing indictaes, you may also press in the two terminals at the vacuum wall receptacle to short the low voltage circuit .. to activate the 120VAC to the motor. If you are measuring across the terminals and see 2.3 volts ..than that may be normal but try measuriung from each terminal to ground and see what you get.. I believe the low voltage circuuitry is 24VAC... Try these installation documents to see if they help you solve your problem.. Hope this helps..

Sep 29, 2008 | Easy Flo EF1600 Central System Vacuum

2 Answers

Power to power carpet head


it sounds like the spring on the cord reel let go. difficult to reinstall. it may have been broken already and that is why it came off. it is rather meticulous trying to work on a cord reel. many can't be disassembled without breaking

Aug 09, 2008 | Miele S548 Bagged Canister Vacuum

2 Answers

Cordless vac won't hold a charge


Like all batteries after a while they go bad/will not hold a charge. especially the kind that is always plugged in/always charging, like electric shavers, cordless vac and so on.
get a new battery

thanks for rating

Jan 14, 2008 | Vacuums

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