3D Vision Blog

A normal user's look into the world of 3D Stereo Technologies

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Upgrading the Rechargeable Battery of the 3D Vision Shutter Glasses

August 6th, 2010 · 27 Comments · GeForce 3D Vision

The Nvidia 3D Vision active shutter glasses use a rechargeable lithium-ion battery that normally should be able to provide you with up to 40 hours of use per single full charge which is nice, but it could’ve been easily even better. The reason for that being that Nvidia is using a 3.7V 50 mAh battery that is located on the right side of the glasses and as you can clearly see from the picture above of the battery, there is quite a lot of free space left around the battery. So there could be a more powerful battery instead of the 50 mAh battery providing some more hours of use per single charge – these is the space and it probably won’t increase the cost much anyway…

But since I’ve had a spare 3.7V 120 mAh lithium-ion rechargeable battery lying around that I was not using, I’ve decided to try replacing the standard battery of the glasses with that one. That of course requires a little soldering and desoldering, but the good news is that the 120 mAh battery fits just fine in the free space that is available for the battery. This means that Nvidia could easily use a 100/120 mAh battery instead of the 50 mAh one they’ve decided to go for and doubling the capacity of the battery should pretty much also double the time you get to use the glasses with a single charge.

After replacing and recharging the new battery everything was functioning perfectly fine, I’ve already been using the glasses for a few hours, but I’ll need quite some time in order to check the full time they will provide with a single charge. However theoretically speaking with a 120 mAh capacity the battery should be able to offer increased time of use from the normal 40 hours to around 100 hours which should be much better – charging less often and longer battery life.

And here I’m thinking about the 20 hours expected with a single charge by the 3D Vision Pro glasses, if they are still using the 50 mAh battery then it gets half the working time because of the RF two-way communication. So with a 120 mAh battery the operating time could’ve been increased to lets say 50 hours which should be much better. But we’ll have to wait a bit more in order to be able to confirm that. And here now I’m thinking about all those first generation of active shutter glasses sold for the new 3D HDTVs that come mostly with lithium batteries offering just single use and not being rechargeable, but at the same time not being cheaper than the 3D Vision glasses either. Lets see how brands like Panasonic, Samsung and Sony will deal with offering rechargeable active shutter glasses for their 3D-ready television sets and frankly I hate it when I want to use something and the battery suddenly dies and needs to be replaced, especially if you don’t have a replacement handy.

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3D Vision Glasses might have a Battery Charging Issue

September 4th, 2009 · 37 Comments · GeForce 3D Vision

Yesterday I’ve had an interesting issue with 3D Vision glasses. A guy that has ordered the shutter glasses from abroad had received them, but they did not work out of the box and they were completely new. No green light when he pressed the sync button and when he plugged a USB for charging just a blink of the red led and nothing happened. They did not charge and the red light was not staying lit after plugging the charging cable, meaning that the battery was not charging at all…


So I got called for help and my first guess was that the lithium-ion rechargeable battery had died completely (its voltage reached 0V) and it cannot be jump-started with just the power it gets through the USB. But this was just a guess and I had to open the glasses and test the battery just to confirm my guess. This was my first time opening 3D Vision, but I had general idea on how to open them (I’m good at this and very experienced fixing different electronics). I expected to find the battery on the left side of the glasses’ frame where you plug the mini USB connector for charging, but to my surprise there was only the whole electronics present in the glasses. And in front of the control PCB sits the IR receiver…


This meant that the battery had to be inside the right frame of the glasses so I had to also open it. And the battery was there – 3,7V with just 50mAh and pretty small in size, I expected bigger and more powerful battery. But still the power consumption has to be so low that the shutter glasses are able to operate up to 40 hours on a single charge. Anyway, Nvidia could’ve fitted a bit bigger battery with larger capacity that could last even longer, because there is additional free space for that. And measuring the battery with a multimeter just confirmed my preliminary guess – 0V, meaning that the battery has been completely discharged. So I had to disconnect the battery and send a few short bursts of energy directly to it with the help of an external 5V, 2A power adapter to give it “a start” so that it can be recharged, and hopefully this helped revive the battery. As a result plugging the mini USB cable in the glasses made them start charging the battery and in a few hours they were ready and functioning without any problems.


Now, normally you will not have to do this procedure, because you can just get a replacement glasses thanks to their warranty, but in this case they were bought from abroad and sending them back for replacement would mean another two week wait and additional costs for transportation. This is why I had tired to fix them and hopefully the problem was not that serious and it was fixable, although this is something that is not easy to do by just everyone. If you are not careful you can break your 3D Vision glasses, so you need to be extra careful if you try to fix this problem yourself! But the result form this fix I had to do was that it is possible to get your shutter glasses “dead” when you buy them or have them “die” if not being used for a few months for instance. So you should be careful not to leave your 3D Vision not fully charged for longer periods of time, because the battery might discharge completely and bringing it back to life sometimes might not be possible. On the other hand, when you are buying the glasses and they are not a new stock you better try pressing the sync button in the shop to avoid getting ones with possibly “dead” (fully discharged) battery. Maybe in the next revision of the glasses Nvidia can try to find a solution to avoid this problem… ;)

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