In the movies they don't reload, and I know why

"Lasers flying everywhere people dying screaming explosions. Then out of nowhere, SH** I need to reload! Oh Cr** our men were just killed because they were reloading their awesome laser firing machines of death!"

It doesn't sound and look cool in a movie, but ifyou read the books and know the lore of Star Wars, almost every weapon does use ammunition, hell here's somthing on the crossbow

           "The traditional Wookie bowcaster uses a magnetic accelerator to fire explosive quarrels, which are enveloped in a penetrating energy shell as they are fired. The Bowcaster has a range of 50 meters and requires immense strength to chicken."
See? It actually uses a slightly better version of a good old fashioned bullet.
Regardless, I'm pretty sure this argument is about the blasters right?
Jango Fetts blasters have infinite energy (this is a fact) but a typical blaster doesn't.
"The E-11 BlasTech Standard Imperial Sidearm combines excellent range with lethal firepower in a compact and rugged design. A standard POWER CELL CARRIES ENOUGH ENERGY FOR 100 SHOTS. PLASMA GAS CARTRIDGES LAST FOR OVER 500 SHOTS and the unit features an advanced cooling system fo superior fire-delivery performance. A folding three-position stock converts the weapon to a rifle configuration for sustained long-distance firing."

I rest my case.