I don't think that's it. I had it set to 200, and when the battle started, I destroyed a ship. The bar had only recharged to about 10-15% when the rest of the fleet went into hyperspace. I saved the game, changed the weapon recharge rate in RebEd to 25000, opened the game, made a new Death Star so it would have the new value, did the same thing as above, and the bar still only recharged the same length in the same amount of time. I think the weapon recharge field in capshpsd.dat is for normal turbolasers, ion cannons, and lasers, not for the Death Star's superlaser.