Panasonic TY-ER3D4ME Operating Instructions Manual page 14

The battery does not charge, or operation time is
short when charged.
Is the charging cable connected properly?
Make sure the charging cable is properly connected.
Is the television power off?
Switch the television power on, then charging will start.
The battery has reached the end of its lifespan.
If operation time is very short even when the battery is charged, the
battery has reached the end of its lifespan. Please consult with the
place of purchase.
Lens type
Liquid Crystal Shutter
Usage temperature range
0 °C - 40 °C (32°F - 104°F)
Charging power supply
DC 5 V (supplied by USB terminal of a Panasonic TV)
Battery
Lithium-ion polymer rechargeable battery
DC 3,7 V, 40 mAh
1
Operation time* : Approx. 25 hours
1
Charging time* : Approx. 30 minutes
Quick charge (2 minutes charge enables approx. 3 hours
use)
2
Viewing range*
Transmitter for 3D Eyewear
Within 3,2 m from front surface
Materials
Main body: Resin
Lens section: Liquid crystal glass
Communication system
2,4 GHz band FH-SS (Frequency Hopping Spread
Spectrum)
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