When it comes to keeping those enchanted weapons running there are a few reliable ways to handle it. The simplest option is stopping by merchants like the mystic emporium in the imperial city's market district or any mages guild hall, where they'll recharge your gear for a fee. If you're looking to handle it yourself though, soul gems are your best friend - grab some empty ones from merchants or while exploring, then use soul trap on enemies before taking them down to fill the gems up. You'll need at least 25 in mysticism to buy soul trap from guild vendors, but it's worth picking up.

For something a bit more interesting, keep an eye out for varla stones while exploring those ancient ayleid ruins. These rare crystals will actually recharge every enchanted weapon you're carrying all at once, which can be a real lifesaver when you're deep in a dungeon. Might want to save them for when you really need them though since they're not exactly common. Just remember that only weapons lose their charge with use, so don't worry about your enchanted armor.