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I’d like to share with you my future project, which is a portable battery, that connects in parallel with the hybrid system of a Prius HEV and transforms it in a plug-in hybrid without plug.


Here is a list of the parts I believe are the best appropiate:


Battery: 48v 40Ah / 80 Ah. Since I start cheap. I’ll go with 40Ah:


High voltage EV Relay, activated by a switch in the dashboard: Avoids high voltage exposure when unplugging the battery and when the car is powered off.


Inverter 48vDC to 240VAC 2500W: since there are no DC boost converters on the market with this requirements I believe an inverter will do.


5A 288v Charger


Circuit is as follows:

Battery is charged at home, brought to the car and hooked to the inverter. Inverter connected to the 288v charger and charger connected to the terminals of the Prius battery pack through HV relay and controlled through a switch in the dashboard

This project will be applied in a Toyota Prius Gen3 and the purpose of this thread is...

A deep dive, there are some 'a miracle occurs here': California ARB Annual Review 2018 issue

Bob Wilson

I'd probably be able to pick this one up.