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Itronix III 260 will not startup

Startup or charge light dos't come on with charger on or in docking ststion. Battery is at 12.38 volts.

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Not turning on. Blue light flashes then turns off

Fixing a Jabra with charge problems, demonstrated by the LED just flashing once when placed in the docking station/charger..
When my Jabra stopped charging after lying several months unused in a drawer, I looked around on the internet for a way to get it to charge again. All the methods to recover the battery that I read on the internet are probably dangerous for both the Jabra and the user. So here is a relatively safe and tested way to recover the battery.
Please note, Jabra does not supply any spare parts, there are fix it or throw it in the trash.
Its a good idea to charge them every 3-6 moths, to stop the problem ever happening to you.
I know this fix I will describe here works on both a Jabra 200 and a 250. I would expect it also to work on the 250V as well, though I have not had a problem with mine up to now.
Some other Jabra models, especially if they demonstrate the same problem as defined in Problem definition below with the indicator LED, may also be recoverable in the same way. Its worth trying.
Don't forget that all Jabras are designed as "throwaway", never to be repaired....that is probably true of most if not all Bluetooth headsets....Jabra models 200 and 250, I find to be the most comfortable ones to wear for long periods, whilst driving for example.
Problem definition.
First let me define the problem for you. If the battery in some Jabras (I cannot say all as I don't know if that is true), gets too deeply discharged by non useage, the charger will not recharge it. The indication that this is the problem is also easy to checkout, just stick the charger in a wall socket, connect the docking station and while watching the indicator LED on the Jabra, slip the Jabra into the docking station. If the LED just blinks once, you have the discharged battery problem. Probably fully recoverable if you are good with your fingers and have some knowledge of electrics or electronics.
Problem fix.
The only way to get the charger to restart, is to get the battery charged to at least 3 volts (its a 3.7 volt battery).
The best and safest method is to get hold of a lab power supply with adjustable voltage and current. I set mine to a fixed 3.7 volts and maximum of 300 milli amps. If you do not have access to such a power supply, look further down this article for a method using either 2 or 3 dry batteries, depending upon the type of battery and the terminal voltage available.
You will also need a voltmeter for either method.
Remove the tiny crosshead screw that holds the Jabra togetherand gently and very slowly pull the headset apart, the wires are easily damaged, are very short, fragile and difficult to repair if you break them.
The Battery is obvious, but how to get to the contacts is not that easy. Carefully slip the battery out of its location and peel away the insulating tapearound the top end where the charger PCB is also mounted.
Identify the + and - of the battery either by either looking at the label (usually on the other side of the battery to the connections) or by measuring the voltage still on the battery and at the same time identifying which pole is the plus. Mark it. Usually a problem battery will have around 2.3 to 2.4 volts or less....
Apply the voltage/current that I detailed before from the lab supply (Plus to Plus, minus to minus) and watch the current meter on the Lab power Supply unit, it should go slowly down as the battery charges up. Stop charging for at least 10 seconds after 1 minute or less, constantly check battery temperature at the same time with a spare finger. If the battery starts warming up. STOP CHARGING. Let the battery cool down.
Always wear protective glasses in case the battery explodes.
Measure the battery voltage from time to time and once it is over say 3 volts, stop charging and attach to the docking station and see if the charger will now charge properly. If not, charge for another minute or so.
If it charges properly,carefully put the Jabra back together and continue charging.
First charge cycle after "Repair".
The first full charge after such a repair may take up to 12 hours before the LED finally goes out, even though a "normal" charge will generally only take 2 hours. This demonstrates clearly how run down the battery really is/was....
Another method to recharge the Jabra Battery for those without a Lab power Supply.
Connect 2 x 1.5 volt (NOT 1.2 volts cells as they will not charge correctly) together, or 3 x 1.2 volt cells together and use them to charge the Jabra internal battery with.
Monitor voltage and battery temperature constantly, till the battery voltage is above 3 volts, then try the normal charger as before. Do carefully iIdentify the positive and negative sides of the battery and apply the battery positive to the + side of the battery. The other polarity to the - side of the battery.
Take your time when charging and monitor both the battery voltage and its temperature carefully.
A series resistor may be used to keep the maximum current to a set maximum....say 10 or 20 Ohms.

May 29, 2013 | Radio Communications

1 Answer

The charger doesn't do anything. I've charged the charger then hooked it up to the battery (pos on pos, neg on neg) then tried to start the car. No reaction whatever. Is there something else I

It's possible you may have a poor connection from your car to your car battery. Check to make sure both battery terminals are on your battery tight. Tighten them if necessary, then try again. If either one was loose, that should fix the problem. Then there may be nothing wrong with your battery charger.

Jan 17, 2013 | RoadPro Road Pro 12 Volt Dc Portable...

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

When battery is docked on charger both yellow & green lights go on. Battery does not charge

that generally indicates a bad battery, but I would try another battery to make sure not a faulty circuit in the charger giving you a bad reading.

Jun 05, 2011 | Ryobi 18 Volt Impact Driver

1 Answer

Mx 3000 universal lcd remote

There are 4 reasons why your unit is behaving this way:
1. Charger is the problem.
2. The docking station is the broken.
3. The battery is broken or not accepting charge.
4. The actual unit is the problem.
It is very hard to tell which one is causing this to happen.
Let us do some troubleshooting first:
1. Plug your charger in an A/C outlet and make sure the red power light (left) is lit, otherwise the charger or the docking station is broken.
2. You can test the charger with a multimeter. Unplug the charger from the docking station and measure the voltage across the outside and inside, it should register more than 5 volts DC. If there is a 5Volt DC the docking station is the problem otherwise the charger is broken.
3. If the red power light is lit and the status light (right) is lit too, your docking station is broken.
4. If the red power light is lit, dock the unit into the charger, the status light (left) should turn red when your battery is accepting charge or turn blue when your battery is fully charged.
5. If the status light will not lit at all (while the red power light is on), tap the screen while the unit is docked on the charger. If the unit will become alive, you need a new battery otherwise you need a new unit.

12 hours is very long time to charge, the status light should turn to blue in less than 2 hours especially for a new battery.

Aug 29, 2008 | Universal Remote Control MX-3000 LCD...

3 Answers

My problem is with the sidekick III, it wont charge, What should I Do?

dnt drain the batteries of your phones...if that happens pls buy multicharger or battery shock,remove the battery..... charge it for about 5min or shock the battery if ur using battery sure u positioned it ryt....den put it back on ur phone then charge it or continue the charging on the multicharger until its full !!!!im pretty sure of encountering the same prob as urs before and thats what i did and it work!!!!

Jun 09, 2007 | T-Mobile Sidekick II

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