Toyota Prius Manual page 57

Pl ug-in Charging System (2012 Model)
The plug-in charging system uses an on-board charger to convert AC power
supplied via the charge cable assembly to DC power that can be used to charge
the HV battery assembly. The charging system uses refined charging control to
ensure battery durability and prevent fires due to overcharging.
The utility power supplied by the charge cable assembly is converted by the
onboard charger assembly to the approximately 207.2 Volts DC used to charge
the HV battery assembly.
Prius Plug-in hybrid vehicles for North America are supplied with a charge
cable assembly designed to allow charging from a 120 Volt AC NEMA 5-15R
receptacle. The maximum current flow during charging is 12 A.
NOTE:
The Prius Plug-in hybrid is compatible with aftermarket chargers or Electric
Vehicle Supply Equipment (EVSE), which is compliant with SAE J1772,
available from different manufacturers other than Toyota. Some EVSE's are
available with 240 Volt input for quicker charging.
Safety Concerns
Since the operation of the plug-in charging system allows high voltage
electrical flow when the vehicle is shut off, it is important to recognize how the
system is activated, deactivated, and disabled.
System Activation:
The following steps provide a simplified explanation on how to charge the
vehicle.
1. Confirm that the vehicle is off and in park (P).
2. Connect the charge cable assembly to a suitable 120 Volt wall
receptacle.
3. Confirm the presence of power, and test the CCID (Charging Circuit
Interrupter Device).
4. Connect the charge cable assembly to the vehicle charge inlet
connector.
5. Confirm that the vehicle's charge indicator illuminates.
When charging, the high voltage cables are energized. Utility electricity flows
from the charge inlet, its voltage is then boosted and it is provided to the HV
battery assembly and air conditioning compressor. Charging normally
completes within 3 hours and will stop automatically.
Charge Indicator
Charge Cable Assembly and Charge
Indicator
Plug-in Charging System Operation (READY Indicator Off)
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POWER Indicator, TEST Button and
RESET Button
AC Flow
(Inlet to Charger )
HV Battery Assembly
Battery Charger Assembly
Charge Inlet