Mazda 2 2015 Owner's Manual page 230

Variable
voltage
alternator
High-current electricity fl ows through the following parts, therefore do not touch them.
Variable voltage alternator
DC-DC converter
Capacitor
NOTE
A difference in the fuel economy may occur depending on how the vehicle's electrical
devices are used.
If the capacitor is to be disposed of, always consult an expert repairer, we recommend
an Authorised Mazda Repairer.
For details, go to the following URL.
http://www.mazda.com/csr/environment/recycling
Capacitor
CAUTION
When Driving
i-ELOOP
DC-DC converter
4–87