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Red light , will not hold a charge

Have charged my mint, red light stays on. Can only get a blue light for a few seconds and it cuts off

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Charge light won't stay on and therefore won't charge


It could not be making good contact with the charger.Check the contacts on the unit and the charger-sometimes the connectors get bent or something is stopping the circuit to complete. Wiggle the device while it is on charge and try to make the light stay on.

Jan 06, 2014 | Dirt Devil 9.6V Gator Hand Vac, BD10085

2 Answers

Mint Plus Turbo Charging Cradle won't function properly


Cradle and contacts are fine. Cradle circuit is nothing but a reed relay and few wires, relay closes on proximity to robot's body, therefore no voltage on contacts before robot is close to cradle.
There is a thermistor inside of battery, and mine was bad. I removed it and now I am charging the battery from my bench power supply at about 220 ma current, overnight, and it works. Probably the solution is to get a new replacement battery, but the one with the thermistor inside (OEM), easily recognized by the third wire, and all should be fine, assuming that nothing else is wrong with charging circuit or power adapter (12v/1A)
Hope this will give you some ideas of where to poke.
Once successful, please post your solution.

Jan 19, 2013 | Mint Plus Turbo Charging Cradle

1 Answer

Red light flashing constantly on dc16 when on charge, used to just stay permantly red without flashing until it went green when charged up.


I had a similar problem when I bought an after market 2Ah battery. Would stay solid red for a few seconds then flash red. I believe my problem was that the battery had gone into "sleep mode" I.e. it was discharged to the point that it "sleeps" in order to protect itself. So......I simply attached a domestic DC multi adapter to the terminals on the battery that are marked + and - (the 2 outside terminals on a DC16 Dyson battery). Switched on the DC adapter for around 10mins and this was enough to "wake" the battery. It now charges as normal attached to the DC16 in the Dyson charge mount.

For a pretty in depth article on lithium battery sleep have a look at this:
http://batteryuniversity.com/learn/article/low_voltage_cut_off

Oct 29, 2010 | Dyson DC16 Root 6 Bagless Handheld...

2 Answers

Status light is red, why? I have a Roomba Discovery.


Hi.

If the red light is solid, that means that the Roomba is near to full discharge. If the light is flashing red, then the Roomba is completely out of charge.

If the Roomba is fully charged, then there may be a fault.

Here full list of light codes:

Pulsing Amber - Charging
Green - Fully Charged
Amber - Partially Discharged
Red - Almost Fully Discharged
Flashing Red - Fully Discharged"

Here manual

See also
Roomba DISCOVERY MODELS' DIAGNOSTIC TESTS

May 24, 2010 | Vacuums

1 Answer

I think the battery is not holding its charge anymore. The red (charging) light does change to green but only runs a few yards on leaving the dock.


You have dead nimh (nickle metal hydride) batteries2_bing.gif.
You will need a replacement. You can test for this by removing the battery and holding the power button for 15 seconds. This will restart the charging cycle as if the battery were new.

Mar 04, 2010 | iRobot Roomba 560 Robotic Vacuum

6 Answers

Roomba 4108 does not charge


Try resetting your Roomba by removing the battery, unplug the charging connector, hold down the Power button for 30 seconds. This will reset the charging system, replace your battery, connect your charger and see what happens. By the way do you also have a homebase ? If so try that too

Dec 12, 2008 | Roomba Robotic Floor Bagless Vacuum

2 Answers

Roomba model 4150


I did the same thing,I charged for over 12 hrs and it run for only few seconds then the red lights comes on.I was on the process of replacing with a new battery till I got in to this and I guess I'll leave it alone rather than wasting money for a new battery.

Feb 10, 2008 | iRobot Roomba Red 4100 Bagless Robotic...

3 Answers

Help


Same thing happened to me, I called the company, and they told me to remove the battery, press the on button for 5 seconds, which clears the system, replace the battery and do a long charge 12 hours. I'm in the process of doing that now.

Dec 14, 2007 | iRobot Roomba Red 4100 Bagless Robotic...

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