787 Batteries and Chargers - Part 1

[saptzae]

Secondary failure

@RR_NDB

So, another issue

A direct connection, feeding current into a battery with a failed cell, would drive good cells into runaway by overvoltage.

There should be no paralleling of battery to battery or powered bus to battery without protective means such as BDM.

A MOSFet based BDM would have to be switched off quickly to prevent current reversal into the battery.