Originally Posted by ricwhite
I have some bad news. I'm really sorry to report this since I initially found the Monster/Optoma 3D glasses to my liking. I liked the fit, comfort, image quality, and field of vision. I have a Epson 6010 and 2 pairs of Epson glasses. They don't fit on me at all. I bought 1 Monster 3D kit and 3 Optoma glasses. All worked initially. After only six hours on one, it died. It was weird because it was fully charged. When turned on, I got the three slow blinking lights indicating it was above 50% charge. In just minutes, it stopped working right when movie viewing. It wouldn't turn on, no blinking indicator lights. When I plugged it it, no charging light. After I left it to charge for a few hours. Nothing. It was dead. It was still within amazon.com's window of return, so I sent it in for refund.
Just today, another one died. Couldn't turn on. Couldn't recharge. Nothing. That's two out of the four that had less than 10 viewing hours on them completely die. I was at the last few days window of return, so I just mailed that one back to amazon as well.
Even if the remaining two work, I will now always worry that they will die in the middle of a movie - never again to be revived. Totally unacceptable - especially when I have guests over. I need something reliable.
At this point, I must give these glasses 1 out of 5 stars and warn all potential buyers that they are unreliable. I will update this thread if any of the remaining two also die.
We went through all this last year in the 3DVIP Theater and Displayer threads.
Bit Cauldron determined last summer a batch was made with an improper value charge resistor. This prevents them from never reaching full charge, this gradually keeps recharging to lower threshholds on subsequent charging. Whether you have some from that group or a similar problem has developed on a new batch is unknown.
Monster and Optoma do not manufacture them, they are just rebranded for them by Bit Cauldron.
3DVIP replaced their customer RF glasses from a fresh confirmed batch last year. I know because I went through four pairs and submitted the charge voltage data to them.
Most of the time you can get by with a 500ma usb source but I was informed by one of the BC engineers if the SOC "state of charge" reaches a certain point the charge controller circuitry could demand up to 750ma. If your souce can't meet that demand then they will remain undercharged.
My replacements that were 3DVIP branded now remain charged for months. My bad ones would go dead in a matter of days after charging and in the OFF state.