TOHATSU 50 Owner's Manual page 33

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DANGER
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0 Hydrogen gas is generated when charging a battery. Thus, keep
the battery well ventilated during charging.
Electric sparks, cigarette smoking and other sources of fire must
be avoided in the charging area to prevent explosion of the battery.
0 The battery fluid (electrolyte) contains sulfuric acid.
If electrolyte is spilled on the skin, clothes, etc. wash with plentiful
of water and consult a medical doctor. Always use safety glasses
and rubber gloves when handling the battery.
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