Toyota 2012 Prius Owner's Manual page 86

1-1. Plug-in hybrid system
Condition Display
1
When the vehicle is charging the
hybrid battery (traction battery)
When there is no energy flow
Low Full
Hybrid battery (traction battery)
status
These images are examples only, and may vary slightly from actual conditions.
57
PRIUS PHV_OM_OM47818U_(U)