GE and Nissan had previously ruled out GE's WattStation as the cause of a few Leaf charging failures, and that story of EV tragedy looks to be winding to a close with a more definitive explanation. As the two tell us, a bug in the Leaf's on-board charging software can damage the relevant hardware under a perfect storm of conditions: if a drivers uses a specific (but not necessarily GE) charger, an undervoltage or similar power crisis can bring the Leaf to its knees