Sony PDW-70MD Instructions For Use Manual page 21

WARNING
Battery may explode if mistreated. Do not recharge,
disassemble or dispose of in fire.
CAUTION
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type
recommended by the manufacturer.
Dispose of used batteries according to the manufacturer's
instructions.
Battery lifetime
When the lithium battery output falls, even button presses
may not operate. The average lithium battery lifetime is
about one year, but this depends on the pattern of use.
If pressing the remote control buttons produces absolutely
no effect on this unit, replace the battery, then check the
operation again.
Face the + symbol upward.
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Names and Functions of Parts
21