The Carolina League average slash line coming into today was .234/.354/.337 for a .690 OPS with a 13.6% BB-rate and 24.8% K-rate. In the lower minors in general you aren't going to see a ton of power just because many players are still physically developing. You can expect decent OBP because pitchers are much more wild and walk prone.
Coming into today you have a lot of hitters performing well over the league average. wRC+ league adjusts minor league hitting and here are some early performers for Carolina. Stats before today's game.
Pena - 43 PA, 142 wRC+
Adamczewski - 42 PA, 209 wRC+
Bitonti - 41 PA, 130 wRC+
Payne - 41 PA, 149 wRC+
Nadal - 39 PA, 111 wRC+
Di Turi - 38 PA, 137 wRC+
Made - 25 PA, 125 wRC+
Dinges - 20 PA, 234 wRC+