I didn't see any warnings about it but I'm not sure if this mod is only supposed to be added to new games.
After adding this mod, my existing Space Age game fails to load with the following message:
The mod Recharging Armor (2.0.1) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event Recharging_Armor::on_init()
Recharging_Armor/control.lua:28: attempt to index local 'event' (a nil value)
stack traceback:
Recharging_Armor/control.lua:28: in function 'initstuff'
Recharging_Armor/control.lua:39: in function <Recharging_Armor/control.lua:37>