Panasonic TY-EW3D3LE Operating Instructions Manual page 8

Disposal
A lithium-ion polymer rechargeable battery is built in
to the 3D Eyewear. Please discard according to local
regulations.
When disposing this product, disassemble properly by
following the procedure on the next page, and remove
the internal rechargeable battery.
Do not disassemble this product except when
disposing of it.
Danger
As the rechargeable battery is specifically for this
product, do not use it for any other device.
Do not charge the removed battery.
Do not throw the battery in a fire, or apply heat to it.
Do not pierce the battery with a nail, subject it to an
impact, or dismantle or modify it.
Do not let the wires touch any other metal or each other.
Do not carry or store the battery with a necklace, hair
pin, or the like.
Do not charge, use, or leave the battery in a hot location
such as near a fire or under the hot sun.
Doing so may cause the battery to generate heat, ignite, or
rupture.
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