For the best battery holders specifically designed for the Apple Vision Pro, the top recommendation is the Belkin Battery Holder, which allows easy attachment to a belt or waistband via a clip or a cross-body strap. Here are the key details:

  • Manufacturer: Belkin
  • Price: $49.95
  • Features:
    • Versatility with a 2-in-1 solution for clip-on and cross-body wearability
    • Adjustable cable clip with 16 rotational positions for customized fit
    • Comfortable, fully adjustable cross-body strap
    • Rotatable battery holder
    • Dimensions: LxWxH = 3.02 cm × 7.26 cm × 14.32 cm (1.19" × 2.86" × 5.64")
    • Weight: 153 g (5.4 oz)

Please note that there might be additional third-party alternatives becoming available soon, such as those hinted at by forum discussions, though none are mentioned explicitly in the search results provided.