I don't like repair drone bays. Too much mouse clicking. Not enough healing. Each ship that has this ship module installed gives the fleet 1 charge that can be used to repair other fleets (or even itself). Every charge needs several mouse clicks to use. If this was given a hot key to use or even the ability to use multiple charges at once, I might consider this a handy ship module.

I find that designing your ships with repair bays works better. All the repair stacks so a fleet of 10 medium ships could repair 20 extra damage per turn, for every ship.