Olympus C-200 ZOOM Reference Manual page 19

WARNING
Batteries with any part of the outer seal (electrical insulation sheath) peeling
off, or any battery split along the seam, can leak, generate heat, or explode.
Never use damaged batteries in the camera. Store-bought batteries
occasionally may be defective, with all or part of the magnetic insulation
sheath peeling off. Never use batteries in this condition.
These batteries cannot be used:
Inserting the Batteries (continued)
Batteries with all or part of the electrical
insulation sheath peeled off.
Seal (insulation sheath)
Part of the negative electrode (–) has a
protruding bulge, although not covered with
the seal (insulation sheath).
Batteries that have a flat negative (–)
electrode
(Some batteries of this type have their
negative electrode covered with the seal
(insulation sheath) while others have no
such seal. Neither may be used).
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