Not really seeing it work, it cuts out too late.
Tested this on cannons:
15 charging consum
3 resting consum
My reactor gave 300 regen which means that I should not be able to charge my weapon anymore as soon as I don't meet the resting consum anymore.
In this case, 300 regen / 3 = 100 cannon modules max.
I was able to get around 450 cannon modules to still charge (extremely slow) before they refused completely. That's 4.5 times more than it should be.
It definitely still recharged at the correct speed if you ignore the resting charge cut off. It just did not cut off when it should have.