How I Jumpstarted fully Discharged 3D rechargeable Glasses

[Zivouhr]

How I Jumpstarted fully Discharged 3D rechargeable Glasses:

I didn't find a thread on this topic after searching in advanced search. One pair of Boblov DLP rechargeable 3D glasses (1 pair of 2 $40+ dollars for both pairs) stopped working entirely. Wouldn't charge, and the lights didn't light up at all anymore. Dead glasses? Not yet.


Situation: I have a 3D projector that is compatible with Boblov rechargeable 3D DLP Glasses. Recharged by a micro USB port at the bottom of the 3D glasses.

Problem: One pair unexpectedly stopped working entirely and would not even charge at all. The red recharge light on top wouldn't light up, and the green light would not appear when pressing the power button on top.
Because this wired rechargeable battery is not replaceable and is supposed to last for years, I had to try something to save it.

For whatever reason, the battery discharged completely so it was unable to even accept a charge when plugged into the Micro USB port, which was charging the other pair completely as normal.



Solution to jumpstart a dead, non-charging rechargeable battery for 3D glasses (from Boblov brand):

Attempt at your own risk/discretion: While this was moderately easy enough to figure out and succeed with, if you attempt this, please understand you are attempting any kind of fix at your own risk and own responsibility. The battery may heat up very quickly and could be a hazard, so eye glass protection, safety gloves and an area that is not flammable would be wise. I used a AA battery, nothing more powerful than that, which is 1.5 volt, and it worked.

I went onto Youtube, and found a number of clever people using 9 Volt Batteries to "jumpstart" their dead, discharged rechargeable batteries for their 3D glasses.
9 volt seems too strong, plus I didn't have a 9 Volt battery available, but I did have a brand new AA battery fresh from the package to try.



What I used to jumpstart my dead rechargeable battery:

AA brand new battery
Metal standard size Safety Pin 1" when closed, 2" stretched open
Tiny Screw Driver Phillips type
Tiny Screw Driver flat head regular kind (to scrape off battery tape)

GOAL: Connect the positive side of AA battery to positive rechargeable battery side, and negative sides to negative sides, for 10 seconds or less if needed, until dead battery conducts some heat to show it's been energized enough to accept a regular micro USB charge again when the 3D glasses are re-assembled. Success? Yes.

1. First, I took the Boblov glasses and took out the 4 tiny black screws on the inside of the frame, while also removing the rubber nose rest beforehand by pulling it off easily to get to the other 2 screws. Everything was unplugged/no charge cable connected.

2. Safely put the screws in a place I wouldn't lose them. Then the front plastic black piece with the light color indicator fell off without the screws on. Inside, I could see the two lenses were connected with circuit boards and underneath, an attached battery with wiring. I took a mental picture of exactly what it looked like BEFORE taking it out to see what I described.

I lifted it slightly, and then pushed it back into place to test out how to get it back the way I found it, before then fully removing the lenses attached in the middle by the circuit board type center piece (small, about 1/2" square). In order to reach the metal of the battery, I had to use the little flat standard screw driver to scrape off the tape that was covering it. I cleared it so the metal was fully showing for both + and - sides of the rechargeable battery (not the AA battery). I did not remove any wires at all. I did not use any wires at all.

3. Then I examined the battery to see closely, there is a PLUS + side, and a MINUS - side. I took the AA battery, and then stretched out the Safety Pin metal so it was fully stretched out to about 2".

First: I pressed the positive Male + side of the AA battery to the Positive + side of the tiny rechargeable battery still attached to the wires.

Second: I took the safety pin fully extended, and touched the pin side to the - negative side of the rechargeable battery, then while still holding the other items, connected the top of the safety pin rounded side to the - Negative other side of the AA battery, to complete the circuit.

4. I held it in place like that for no more than 10 seconds while holding the little rechargeable battery, which suddenly started feeling warm, then hot by the end of 10 seconds. I took away the AA battery so it would no longer jumpstart the rechargeable battery. By now, the rechargeable battery was very warm, but starting to cool down.

5. Final step, was to put everything back as I found it when I disassembled the glasses, then only after confirming it worked by connected the USB micro port to the glasses to see the red charge light was working again, then I screwed in the screws again to complete the re-assembly.


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Results? The red light is now showing that my 3D glasses are charging again! It's charging as normal again to my relief and surprise. I removed the charging micro USB cable from the glasses port and pressed the power button. The green light came on, and it's working as normal. Awesome!

Easy? Yes. For me it was. Total time to complete, about 20 minutes of careful steps. Only concern left is why the battery fully discharged on its own. I've been using it for the whole year but rarely charged it since it was working fine each weekend I watch a 3D film on my 3D projector. Rather than toss these otherwise good 3D glasses away and order a new set, I just saved $40+ dollars. All I needed was patience and the power of the AA battery, which isn't much power but was plenty to jumpstart this dead battery back to life.

This guy had a similiar looking pair of 3D glasses with a permanent installed and wired rechargeable battery, and his tip helped me figure how to get it working, but I didn't use any wires and didn't disconnect any wires at all. And I used a AA battery, not a stronger 9 volt.

Fix not charging problem of 3D glasses, revive dead battery - YouTube

[Joe D.]

Hi Ziv,

I worry about that happening with my six pairs of universal active glasses as well. So I make it a point to recharge them all at least once every six months.