When evaluating an OEM electric skateboard, you must prioritize the battery cell quality, typically looking for brands like Samsung, LG, or Panasonic to ensure longevity and safety. The motor type is also critical; dual hub motors offer a sleek look and low maintenance, while belt-drive systems provide higher torque and better heat dissipation. Ensure the Electronic Speed Controller (ESC) uses a reputable firmware like Hobbywing or VESC for smooth acceleration and braking curves. Additionally, the deck material should be a blend of Canadian Maple and Bamboo or Carbon Fiber to balance flexibility with structural durability.