TSB: Prius and vehicles are equipped with 2 types of batteries:
? Hybrid Vehicle (HV) battery
? 12-volt auxiliary battery
If Prius or vehicles are put into storage, the state of charge (SOC) of its HV battery and auxiliary battery will gradually decrease. To prevent the auxiliary battery from becoming discharged during storage, proper maintenance is necessary.
Please perform the following maintenance service for the HV battery and 12-volt auxiliary battery.