Graco PD104815A Owner's Manual page 4

FOR SAFE BATTERY USE:
Keep the batteries out of children's reach.
Any battery may leak battery acid if mixed
with a different battery type, if inserted
incorrectly (put in backwards) or if all
batteries are not replaced or recharged at
the same time. Do not mix old and new
batteries. Do not mix alkaline, standard
(carbon-zinc) or rechargeable
(nickel-cadmium) batteries.
Any battery may leak battery acid or
explode if disposed of in fire or an attempt
is made to charge a battery not intended
to be recharged. Never recharge a cell of
one type in a recharger made for a cell of
another type.
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