Mad Heaters Vaporizer & accessories – battery-free ball-head Vaporizers from the UK
In this collection, you'll find Mad Heaters Vaporizer and matching Mad Heaters accessories: the stainless steel Tempest 2 Slim and Tempest ruby balls as a heat-storage upgrade. Mad Heaters is a British manufacturer specializing in battery-free mechanical Vaporizer.
The principle is deliberately simple: no electronics, nothing to charge, nothing to wear out. Heat comes from the outside, using a torch lighter or, for more consistent results, an induction heater. The Tempest's distinctive feature is its ball head: instead of heating the herb directly against a hot wall, balls in the cap store the heat and transfer it to the airflow. According to Mad Heaters, the head is designed to fully extract a load with a single heat-up.

Tempest 2 Slim: Ball head with no battery
The Mad Heaters Tempest 2 Slim is a mechanical herb Vaporizer with no battery or electronics. You heat the cap with a torch lighter or an induction heater; around 40 quartz balls inside store the heat and release it to the airflow as you draw, heating the herb primarily by convection. Instead of a display, a pointer and an audible click signal when the cap is hot enough. The 316 stainless steel stem measures 122 × 14.5 mm and weighs 61 g. A heat source is not included; Mad Heaters lists the iSpire Wand and YLL 3.0 as compatible induction heaters.

Four fill settings and two air inlets
Use the included tube to position the chamber screen in one of four positions: approximately 0.05, 0.1, 0.15, or 0.2 g. The smallest setting is new to the Slim and is suitable for short sessions. Adjust the airflow at the cap and through an inlet on the stem, which you mostly cover while drawing so the air flows through the hot balls. A replaceable cooling unit in the stem cools the vapor. A 10 mm water pipe adapter lets you connect the Slim directly to a water pipe. The manufacturer's replacement cap and chamber fit the Tempest 2 and Slim, but the Tempest 2 mouthpiece and heat shield do not.

Ruby balls for greater heat retention
The balls in the cap are replaceable. The Mad Heaters Tempest ruby balls are about 50 synthetic ruby balls, each 3 mm in diameter—enough to fill the chamber to 2.8 g, with some to spare. According to the manufacturer, they are heavier than the standard quartz balls, retain more heat, and heat up more steadily. They fit the Tempest, Tempest 2, and Tempest 2 Slim. Important after replacing them: heating behavior changes, so don't rely on familiar timing; watch the indicator and listen for the click instead. A few test runs with an empty chamber will help you find the new heating times.
Whether you're looking for a durable Vaporizer without a battery or want to upgrade your Tempest with ruby balls, you'll find the latest Mad Heaters products here. You can find more battery-free Vaporizer models heated with a lighter or induction at DynaVap.