how much does a prius traction battery cost
Report Abuse. There are two batteries in the Prius: A 12V battery used to power on the car and a traction battery used to power the motors. The 12V battery costs about $150-$200 depending upon where you get it. Here is one place: http://www.elearnaid.com/12vo1topraub.ht... The traction battery costs a bit less than $2000 plus $500 for installation for a new one. However, at 150,000 miles there is still a long way to go before replacement, and should you ever have to replace it there are choices: 1.