12 Volt Battery Replacement / Upgrade on a
2007 Toyota Camry Hybrid with photos Three years old and 30,000 miles, is a reasonable time to replace a 12 volt battery. Mine died in my driveway, thus giving me more options than 100 miles away from home. In the end the battery measured 1.7 volts, not the typical 12 volts, the battery gave me signs that it was dying, the key would not start...