Toyota 2013 Camry Hybrid Manual page 352

4-3. Do-it-yourself maintenance
Exterior
■
Make sure that the 12-volt battery terminals are not corroded
and that there are no loose connections, cracks, or loose
clamps.
Before recharging
■
When recharging, the 12-volt battery produces hydrogen gas which is flam-
mable and explosive. Therefore, observe the following precautions before
recharging:
If recharging with the 12-volt battery installed on the vehicle, be sure to
●
disconnect the ground cable.
Make sure the power switch on the charger is off when connecting and
●
disconnecting the charger cables to the 12-volt battery.
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Terminals
Hold-down clamp