no theyre correct. for biweave hybrid builds I always crunch the numbers manually to find the sweet spot before distributor capacity runs out. Coriolis etc havent always been accurate on that.

For that, essentially you subtract { (broken regen rate)x(shield dist draw)} from your distributor sys regen rate. the negative difference is how much your rebuilding shield will take from your sys capacity each second (assuming you have 4pips to sys throughout) once that sys capacity reaches zero, your shield will only rebuild at your max distributor sys output, (which is sys regen rate divided by shield distributor draw.) For maximum rebuild efficiency you want to avoid draining your sys cap in the process. you need to rebuild 50% of your shield's MJ total to bring the shield back up.

So once you know how long it takes to drain your sys capacitor at full shield-rebuild, you can multiply your shield rebuild rate by that time, and the result is 50% of the total shield MJ you can get away with on that shipbuild, and still rebuild your shield at max rate. if you find yourself with plenty of leeway, try the math again with fast-charge. if you find the resulting shield far too feeble, try again with lo-draw effect as this reduces the shield's dist draw, which has a big effect on those big biweave rebuild numbers.