3D Vision Blog

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

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Again About Replacing a Dead Battery in 3D Vision Glasses

August 28th, 2012 · 3 Comments · GeForce 3D Vision

It is not the first time that the rechargeable battery of a pair of 3D Vision glasses dies in my hands and it is not the first time I’ve replaced a dead battery (or have revived one that has had its voltage drop below the recommended level). Recently the battery in my very first pair of 3D Vision active shutter glasses has stopped working, these glasses are over 3 years old already and have seen a lot of use, and while the last time I was lucky to have a suitable rechargeable single cell Lithium-Polymer battery available, this time I did not have. Fortunately, after a lot of searching for a small size single cell LiPo battery with similar capacity to the original battery used in the 3D glasses I have found out some suitable ones. The original battery used in the 3D Vision glasses is a 50mAh 3.7V 1S LiPo and these are not very common and widely used, but apparently some small radio controlled models use similar batteries.

The ones that I’ve found out are a 50mAh battery for $2 USD and a 70mAh for $1.84 USD from one of the largest Chinese online store for RC models and parts. Both batteries are very similar in size with the most notable difference being that the 70mAh one is 1mm thicker, but it also fits Ok in the glasses (no need to use double sided tape). At the time I’ve found the batteries only the 70mAh one was in stock so I’ve ordered a few to try them, but at the moment the 50mAh model is also available.

To replace the batteries you need to first desolder the old battery and remove the small electronics board that is soldered to the two terminals of the battery, this is a protection circuit that you need to solder on the replacement battery as it does not come with one. Then you just solder back the plus (red) and minus (black) cables to the new battery, recharge the glasses so that the new battery is fully charged and if everything is fine they should start working again (the batteries do come with some charge left in them, so you can test even before fully recharging them). In the end the good old pair of 3D Vision glasses is back in action and it can take up some more use before/if something else fails, the good news is that you can easily do the repair yourself and it will not cost you much, you only need a soldering iron and some basic skills using it.

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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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