Request for information:

“Yesterday at about 3.3pm I was following the #14 south up Grafton Road.
For about 20 minutes it blocked the road because of what seemed to be sudden EV battery failure.
Eventually it bunny hopped out of the way of traffic.
What was the cause of the failure?
Since EVs were introduced how many instances have there been of sudden battery failure?
By comparison, are the EV buses equal to, the same as or worse than ICE buses?
What evidence is there to support that?”