Charging 60AH car battery with laptop charger?

im going to charge my car battery. which is now at 11.88 volt. back to its normal state at around 12.45 volt.
is it been done before?
is it safe.

is there any probability that either the laptop charger adaptor or the car battery will explode?.

thanks in advance
Update: CW: why? have you done it before? oh my laptop charger is 15volt 5 ampere.
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