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Does jabra model R73377 stop charging when phone is Completely charged? Or does continue leading to burn Battery Don

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It will stop when fully charged.

Posted on Apr 20, 2017

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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 none.....so 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.
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

How to get new batteries for jabra bt2050


    • 1 Unscrew the small screw in the center of the Jabra's body.
    • 2 Slide the body to the left until it slips off.
    • 3 Unclip the existing, old battery.
    • 4 Clip the replacement battery into place.
    • 5 Replace the cover and the screw that held it down with the screwdriver.
    • You must charge the jabra headset's battery and go through an easy setup process before use.

Apr 27, 2012 | Jabra BT2050 Bluetooth Headset

1 Answer

I don't have a manual for my small Black & Decker Smart Charger. I'm trying to charge the battery on my '07 Honda Rebel 250cc. It has settings for 2/6/12 volt batteries. How do I hook it...


Hi,

You just need to set black & decker charger to 12V . Don't make mistake while connecting + / - leads. + lead usually come with Red color cable. You can use the AVO tester to justify the lead cable. The charging time is normally about 10 -12 hours (or just just check the status on your charger display). If your charger does not has trickle charge facility, you have to disconnect your charger after 12 hours continuous use.

Also, you can find the guidance about your charger here :

www.blackanddecker.com/power-tools/VEC1087CBD.aspx

Regards

Sep 22, 2011 | Honda CB 250 Motorcycles

1 Answer

My samsung gt 15500 won't charge up. It was working fine 2 days ago and yesterday i brought the usb lead to work with me to charge it with my computer. Nothing happened when i plugged it in so i...


If the phone was totally dead before it refused to charge initially, then the refusal to charge is due to the fact that there was no residual charge left to bring it to a charge, because the battery completely died.
To fix it, kick start the charging process.
Remove the battery, and using a universal charger (desktop charger) charge the battery for say 10 minutes, before re- inserting the battery to the phone and continuing with the normal charging process.
If this does not work out, then problem is with the charging port. It has to be replaced. This can be done by nearby local phone repairers.
Hope it helps?
Success.

May 12, 2011 | Cell Phones

2 Answers

My headset will not turn on


Hello

Your bluetooth headset is powered by an internal battery. If the battery is not charged,it just won't turn on. Fully charge your battery before use.

Make sure that the power outlet you're using is working and that the cord is fitted correctly into the wall, PC or Car outlet and the Jabra Bluetooth device.

Try unplugging the Jabra Bluetooth device and see if it turns on. If so, use the Jabra Bluetooth device until the battery is completely exhausted. The next time you charge it, check that it is charging properly

If the Jabra Bluetooth device is still not charging, check what happens when you initially plug the Bluetooth device into its charger. If the light on the Bluetooth device flashes on and then off again quickly, it is likely that the battery is no longer working. Batteries cannot be replaced or covered warranty

Dec 30, 2010 | Jabra BT150 Wireless Headset

3 Answers

Jabra BT8010 doesn't power up


Contact me if you are interested to sell it for parts acidx0 ~(at)~ gmail.com

Aug 09, 2008 | Jabra BT8010 Wireless Headset

2 Answers

BT500V won't charge


This happens because the battery gets too low to take a charge.
To jump start the headset, connect the power lead and the LED will be flashing red. now press and hold the power and BT pairing buttons. The LED should change to solid red.
I found that holding both buttons for about 3-5 minutes allowed the battery to get enough charge to start charging and you can release the buttons and the headset will continue to charge.
If the led starts flashing again, just repeat the process again.
Hope this helps...
Baz

Dec 16, 2007 | Jabra BT500V Wireless Headset

6 Answers

New jabra A210 not charging


I had not used my A210 in a couple years, and when I needed it again now, I TOO GOT THIS SAME EXACT SYMPTOM: where it would light red (charging) only for 2 or 3 seconds, and then be off. Hours on the charger and no charging or difference. I tried plugging it in a few hundred times to see if it would "jump start" for the 3 seconds to add up, no luck. I WAS VERY GLAD to read MightyFrosty could change something inside and get it working. I followed his advice up to "removing the tiny circuitboard on the tiny battery and resoldering". Instead (got the case open with a razor blade, gently) I removed the amber tape that wraps the battery/circuitboard assembly and tried first "jumping" the red to the "+", nothing~ but then jumping the black to the "-" the RED LIGHT came on and STAYED ON! (but only while "jumped". Better yet after some 20 minutes of "jumpered" charging, the RED LIGHT STAYED ON even when I removed the tiny jumper~! (a tiny wire is all, bent to touch the black wire solder spot and the "-" battery lead). so IT APPEARS it CAN CHARGE PROPERLY on its own once the battery has a little juice in it! It is charging completely normally now (red light solid, no jumpers, and with no cuts or circuit removals!). I believe I can reassemble it all tomorrow and have a non-modified operational bluetooth Jabra! Thank you MightyFrosty and good luck to all!

Oct 24, 2007 | LG Jabra A210 Bluetooth Adapter for...

8 Answers

Jabra BT500 will not power on or charge


I would also like to know if you find a fix for this problem. I have the BT500 and it will also not turn on.

Sep 17, 2007 | Jabra BT500 Wireless Headset

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