I made a fleet of about 12 mixed ships (total tonnage about 48,000) to take out a fleet of about 15, 800 ton ships (so about 12000 tons). I designed the sensors on all my ships to ideally detect 800 ton ships, and that seems to work fine-- I noticed the enemy pretty much right at my max sensor range, about 44 minutes before they closed in (at 10,000 km/s!) to fight me.
Here's the problem. My ships fired once, as soon as they decided they had good enough odds. Even got a few hits, for 1 damage apiece. Unfortunately, now they're continually saying, at every 5 second increment, that they're trying to fire but their weapons have 0 out of 3 (for the 10 cm lasers) and 0 out of 6 (for the 12 cm) charge. I have rank 3 capacitors on their beams, and the 10 cm list an ROF of 5, while the 10 cm's list an ROF of 10. These are full sized Near Ultraviolet lasers without any reduction in Rate of Fire.
Basically, my ships have fired once, and now all their weapons are failing to charge, at all. What's going on here? The enemy has meson beams, so I don't think they're scrambling my systems or anything funky like that. They're simply trying and fire over and over again because their lasers have no charge.