Toyota PRIUS ALPHA 2012 Quick Reference Manual page 452

4-3. Do-it-yourself maintenance
CAUTION
■
When disconnecting the 12-volt battery
NOTICE
■
When recharging the 12-volt battery
Never recharge the 12-volt battery while the hybrid system is operating.
Also, be sure all accessories are turned off.
436
Do not disconnect the negative (-) termi-
nal on the body side as shown. The dis-
connected negative (-) terminal may
touch the positive (+) terminal, which may
cause a short and result in death or seri-
ous injury.