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Battery Voltage & Draw Settings

Why variable voltage matters, recommended ranges by core type, and how to coach consumers to the best flavor.

6 min readLast updated Apr 28, 2026Published Aug 22, 2025

Voltage is the single biggest lever a consumer has over flavor and vapor. Specifying the right battery — and labeling the right starting voltage — reduces returns and protects your oil's profile.

What's covered

  • Fixed vs. variable-voltage batteries
  • Recommended voltage by core type
  • Preheat modes and when to use them

Fixed vs. variable voltage

Fixed-voltage batteries are simpler and cheaper but unforgiving across oil types. Variable-voltage batteries (like Empti Pulse) let consumers find the sweet spot, which is especially valuable for flavor-forward live resin.

Recommended ranges

Start low and step up: 2.5–2.8 V for delicate terpenes, 3.0–3.4 V for balanced distillate, up to 3.6 V for thick oil that needs more energy to mobilize. Above this, you risk scorching.

Preheat modes

Preheat gently warms thick oil before a draw, improving first-pull consistency in cold environments. Coach consumers to use short preheat cycles rather than holding the button through a full draw.

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