Bests & Worsts Reviews from Amazon

I've been plagued with the dead battery issue many others have had. In a nutshell, the internal lithium battery slowly discharges over time, If it gets below 1.4 volts, the glasses will refuse to charge. I bought 4 pairs less than a year ago. They sat in a box until I found time to play. Unfortunately, play time was ruined, because they were completely dead. I checked Amazon reviews, and sure enough, many others are having the same issue. Being an avid electronics geek/modder, I decided to put some troubleshooting time in, save my glasses and hopefully many others from the landfill! Please look for my uploaded images (scroll down to the bottom of this review or "customer images") for instructions. 8 total images. To jump start: Requires disassembly. Tools required: a NEW 1.5v Alkaline battery (AA,C ,or D), 2 jumper wires or alligator clip jumpers, 2 safety pins or sewing pins/needles. Small Philips "eyeglasses" screwdriver. A small tool to push out the hinge pin. USB charging cable. TIME NEEDED: About 5 minutes per pair. 1. Disassemble according to pictures. you'll need to access the solder joints on the battery itself. 2. Assemble jump start battery, wires, and pins according to pictures. 3. Plug glasses into a USB charger or computer that can charge them. You should see a red LED light flash once on the glasses, this indicates you have power, but they are not accepting a charge. 4. BEING ABSOLUTELY SURE you match + for +, and - for -, see picture for where to place jumper pins on battery. You'll need to push the pins through the Kapton tape to make connection with the solder joints underneath. Hold the jumpers there for about 3-5 seconds. Timing is not critical here. (This step brings the actual lithium cell over the PCM board 1.4v no-charge threshold. Bad design if you ask me, but whatever. Battery PCM design probably went to the lowest cost Chinese manufacturer. Google "PCM battery circuit" if you want the gritty details.) 5. The glasses should start charging at this point. Please note, the red LED on the glasses will NOT light at this step. However, leave them plugged into the USB charger for around 30 seconds to let them charge a bit. After 30 seconds, unplug your USB charger, wait a few seconds, then plug it back in. If the LED on the glasses lights red, and stays on, congratulations!!!! You've fixed your glasses and they are charging! Reassemble the glasses. 6. Let them charge all the way till the LED light on the glasses turn themselves off. I think it takes a few hours to charge... Charge your glasses occasionally, to keep this from happening again. On a side note, I believe the battery's built in PCM module is the issue with these. You can find new lithium batteries with PCM modules on Ebay or Alibaba if you are inclined to find and solder in new replacements. The dimensions of the OEM battery are 4mm x 15mm x 20mm, 3.7v, 90mah, if you try to go find a suitable replacement. The mah rating does NOT need to match the OEM battery, it just needs to physically fit. If this review helped you, upvote it so more people can be helped when their glasses die, and pay forward the favor by helping someone else some day!