To the XCAPEPOD!
Join Date: Jan 2008
Location: Martinsburg, WV
Thanked 1,762 Times in 868 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 71 Post(s)
Yeah, regarding "no start" with an EV, my understanding is that this can happen to all EVs, including Tesla. The 12V battery is separate from the high voltage (HV) traction battery that supplies drive power, but the 12V battery is needed to engage the contacts with the traction battery and run whatever electronics are needed to make sure that it's safe to engage the HV battery. If that's dead, no contacts close and therefore no traction battery power and you're dead in the water. Just like an ICE, make sure your EV's 12V battery is in good health!
From a safety perspective, if there is a malfunction and you need to rapidly disconnect the high voltage battery (which may have suffered from damage in an accident, malfunctioned, etc.), then you need a secondary power source for that also.