The Complete Guide to Battery-Free Manual Dry Herb Vaporizers (Thermal Extraction Devices)

A no-batteries, no-charging, no-electronics approach to vaporizing dry herbs. In this guide we explain the first principles for beginners, dialed in for enthusiasts, and grounded in the science of thermal extraction.

Last reviewed: · Reading time: ~40 minutes · Written and reviewed by the Cannabis Clinics Malta product team

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Who this guide is for

This is a long, deliberately complete reference. You don't have to read it end to end. Use the jumps below.

• Complete beginners — start with What is a battery-free manual vaporizer?, then How to use one, step by step.
• Switchers from smoking — read The science of thermal extraction and Combustion vs vaporization.
• People comparing manual vs electronic vapes — go straight to Manual vs electronic: the honest comparison.
• Experienced enthusiasts — skip to Heating methods compared, Advanced technique, and Maintenance.

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What is a battery-free manual dry herb vaporizer?

A battery-free manual dry herb vaporizer is a device that heats ground botanical material to the point where its active compounds evaporate. All this and without burning it, while using heat supplied from outside the device rather than from an internal battery.

In a conventional electronic vaporizer, a lithium battery powers an internal heating element (a coil or ceramic oven) that warms the herb. In a manual device, you are the temperature controller. You apply a flame or an induction field to a metal chamber, the chamber transfers heat into the herb, and you stop heating when the device tells you it is ready. There are no electronics in the airpath, nothing to recharge, and crucially no battery to degrade, swell, or die at the worst possible moment.

These devices go by several names, and the terminology matters for understanding the category:

• Manual vaporizer — emphasises that you control the heat, not a circuit board.
• Battery-free or flame-powered vaporizer — emphasises the lack of a power cell.
• Butane vaporizer — emphasises the most common heat source (a butane torch lighter).
• Thermal Extraction Device (TED) — the most precise term, and the one we use throughout this guide.

Why "Thermal Extraction Device" is the better term

"Vaporizer" is a loose word that covers everything from disposable nicotine pens to suitcase-sized desktop units. Thermal Extraction Device is more honest about what is actually happening: controlled application of thermal energy to extract volatile compounds from plant matter into an inhalable aerosol. The term draws a clean line between this category and combustion (smoking) on one side, and battery-driven electronics on the other.

Where TEDs sit in the wider vaporizer family

A TED is battery-free at the point of use even when you heat it with a mains- or battery-powered induction heater, because the device itself contains no power source. The heater is a separate accessory. This distinction trips up a lot of newcomers, so it is worth stating plainly: an induction heater does not make a DynaVap "electronic." The vaporizer is still a passive piece of metal. The heater simply replaces the flame.

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Manual vs electronic vaporizers: the honest comparison

There is no universally "better" device, only the better device for you. Manual TEDs and electronic vaporizers solve the same problem (heat herb without burning it) with opposite philosophies. Here is the side-by-side, with no marketing gloss.

Reading the table: what actually matters

• The learning curve is the single biggest reason people return a TED and the single biggest reason they fall in love with one. With an electronic vape you press a button and wait. With a TED you learn a small skill (how long to heat, how to draw). Most people are competent within a day and proficient within a week. If "press a button" is non-negotiable for you, buy electronic. If you enjoy a small ritual and total reliability, a TED rewards you for years.
• Repairability and longevity are where TEDs quietly win. An all-metal click device has essentially nothing that wears out except a rubber o-ring and a tiny screen both of which cost a few cents and take seconds to replace. There is no battery to swell, no USB port to corrode, no firmware to abandon. People are still happily using ten-year-old units.
• Precision goes to electronics. If you want to vape at exactly 188 °C for a specific flavour profile every single time, a digital convection vaporizer does that effortlessly. A TED gives you a range you steer by feel and by the click. Enthusiasts argue this is a feature, not a bug but beginners chasing repeatability should know the difference.

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The science of thermal extraction: how heat releases active compounds

To use a manual vaporizer well, you only need to understand one idea deeply: different compounds in your herb evaporate at different temperatures, and there is a window where they evaporate cleanly before the plant material burns. Everything about technique flows from that.

The three ways heat reaches your herb. Most vaporizers use a blend; the dominant mode shapes how the device behaves.

Conduction, convection, and radiation - the three ways heat moves

Heat reaches your herb by some combination of three mechanisms. Knowing which one your device favours explains why it behaves the way it does.

• Conduction - heat transfers by direct contact. The chamber wall gets hot and warms the herb touching it. Conduction devices heat up fast and hit hard, but the herb nearest the wall can scorch while the centre lags, so even packing and a stir matter.
• Convection - heat transfers via moving hot air. You draw air across or past the heat source and it carries warmth through the whole load. Convection tends to give cleaner, more even, more flavourful extraction, but it is more technique-dependent in a manual device because you are the airflow.
• Radiation - heat transfers as infrared energy across a gap, no contact or airflow required. In practice this is a minor contributor in most TEDs but it is part of why a glowing metal cap warms the bowl even where it isn't touching.

Most real devices are hybrids. A DynaVap-style VapCap, for example, is conduction-led with a meaningful convection contribution as you draw air through the heated chamber. A Lotus or Sticky Brick is convection-led, the flame heats a plate or screen and you pull that heat through the herb. A Vapman blends both.

The temperature window: boiling points of the compounds you care about

Cannabinoids and terpenes are volatile, they evaporate at specific, well-studied temperatures. Below is a working reference. Treat these as starting reference points, not laboratory absolutes: real-world boiling points shift with pressure, altitude, the plant matrix, and the purity of the compound. Several compounds also begin subliming (going straight from solid to vapour) below their listed boiling point.

Figures synthesised from commonly published cannabinoid and terpene boiling-point references; ranges given where the literature does not converge on a single value.

This table is the entire reason temperature control exists. Lower temperatures favour the lighter, more aromatic terpenes and the lightest cannabinoids; higher temperatures pull the heavier cannabinoids but at the cost of flavour and smoothness. That gives you three practical bands to steer by.

The dry-herb vaporization window, with common cannabinoid and terpene boiling points. Stay below ~230 °C to avoid combustion.

Combustion vs vaporization: why the temperature window matters

This is the part that justifies the whole category. Vaporization releases compounds; combustion destroys them and creates new byproducts.

When plant material is heated past roughly 230 °C it begins to undergo pyrolysis it chars and burns. Research on cannabis pyrolysis has identified the appearance of byproducts such as benzene, toluene, and acrolein once combustion sets in, which is precisely what staying under that threshold is meant to avoid (Pomahačová et al., Inhalation Toxicology, 2009). Conversely, controlled vaporization at typical use temperatures has been reported to deliver a far cleaner cannabinoid-to-byproduct ratio than smoking: a frequently cited analysis found that a desktop vaporizer operated around 210 °C produced dramatically fewer combustion byproducts than a comparable cannabis cigarette (Lanz et al., 2016), and earlier work reported a substantially higher cannabinoid-to-tar ratio for vaporization versus combustion (Hazekamp et al., 2006).

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Anatomy of a manual vaporizer

Most modern click-style TEDs share the same handful of parts. Learn these once and the entire category, plus every replacement part you'll ever buy makes sense. We'll use the DynaVap VapCap architecture as the reference because it is the most widely owned, then note where convection devices differ.

Anatomy of a click-style Thermal Extraction Device: cap and bimetallic click disc at the heat end, condenser and airport along the body, mouthpiece at the draw end.

The components

• The cap - a metal cap that fits snugly over the chamber and seals it. On click-style devices the cap contains the temperature indicator (see below). Critical safety note: the cap and the mouthpiece are at opposite ends. Never confuse them, the cap gets very hot.
• The tip / chamber (the "bowl") - the metal cup that holds your ground herb. Bowl sizes are tiny by design, often 0.05 g–0.1 g, which is why these devices are exceptional for microdosing and herb efficiency.
• The CCD screen - a small, fine "Circular Concave Disc" screen that sits at the base of the chamber. It holds the herb above the airpath, helps even out airflow, and on adjustable models can be moved up to shrink the bowl.
• The condenser - a tube inside the stem that connects the chamber to the mouthpiece. As hot vapour travels up it, the condenser cools it slightly, smoothing the hit.
• The body / stem / midsection - the part you hold. It houses the condenser and provides the airport a small hole (sometimes adjustable, sometimes dual) you can cover or uncover with a finger to control airflow and air-to-vapour ratio.
• The mouthpiece - what you draw from. On some models it twists to adjust airflow; on others it's a simple press-fit. Many taper to 10 mm or 14 mm so the whole device can drop into a water pipe.
• O-rings - small rubber rings that create friction-fit seals between parts. These are the main wear item; they're cheap and replaceable.

The signature: the bimetallic "click" temperature indicator

The feature that defines click-style TEDs is a bimetallic temperature indicator built into the cap. A bimetallic disc is made of two metals bonded together that expand at different rates when heated. As the cap reaches the target temperature the disc snaps with an audible click. As it cools below a lower threshold it clicks again.

In plain terms: the device tells you when it is ready, and tells you again when it's safe to reheat. That's the entire genius of the design, it converts an invisible, easy-to-overshoot variable (temperature) into a clear, binary audio cue.

Some makers offer a low-temperature cap with a set point tuned to a cooler click, for flavour-chasers who want to start their draw in the terpene band rather than near the top of the range.

How convection TEDs differ

Pure-convection manual devices (Lotus, Sticky Brick, Vaponic) drop the click and the sealed cap in favour of a heated element you pull air through:

• A Lotus uses a metal plate/cap you heat with a torch; you draw air down past the hot plate and through the bowl, modulating temperature live by flame timing and draw speed.
• A Sticky Brick forces flame-heated air directly through a single chamber, it's the "cannon" of the category, capable of huge, dense hits.
• A Vaponic is an all-glass twin-tube design: you heat the outer glass and inhale when vapour appears.

These trade the click's built-in safety net for finer live control and a steeper learning curve.

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The battery-free landscape: families and how they compare

The category is bigger than one brand. Understanding the families helps you choose with intent rather than buying the first name you heard.

DynaVap (the VapCap ecosystem)

The most popular and most modular TED maker. Every model shares the same click technology and core parts, so they "vape the same"; the differences are bowl size, material, airflow, and water-pipe compatibility.

• Entry / ultra-durable: the B / B2 (stainless internals, near-indestructible silicone body, no glass, no o-rings) and the all-glass G3, the cheapest way in.
• The classic all-rounder: the M / M7 (and longer M7 XL for extra vapour cooling) — stainless steel, adjustable bowl, the recommended first "real" DynaVap for most people.
• Premium & specialised: titanium bodies, wood-accented models (e.g. WoodWynd), water-pipe-focused VonG designs, and large-oven and convection/"ball" models for enthusiasts who want bigger sessions.

Vapman

A handcrafted Swiss-origin device (a wooden body with a metal bowl) that blends conduction and convection. A modern "Click" version adds a DynaVap-style audible indicator. Tiny bowl, superb flavour, beloved for microdosing and for its meditative ritual. Steeper technique than a DynaVap but rewarding.

Lotus

A convection-led, torch-powered device with a distinctive heated cap/plate. Renowned for flavour because the flame never touches the herb. Highly controllable in real time, works beautifully on a water pipe, with a learning curve to match.

Sticky Brick

Wooden, convection "bricks" that push flame-heated air through a large chamber for very big, dense hits. The heavy hitter of the category; less subtle, more powerful, somewhat less discreet.

Vaponic, Camouflet Convector, and others

All-glass twin-tube designs (Vaponic), no-click full-convection metal devices (Camouflet Convector), ceramic-diffuser pipe-style units (VaporGenie), plus a healthy ecosystem of boutique makers and custom stems. The category is deep once you fall down the rabbit hole.

At-a-glance family comparison

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How to use a manual vaporizer, step by step

This section assumes a click-style device (DynaVap-type) because it's the most common starting point. Convection-specific notes follow. Do a "dry run" first: heat the empty device a few times with no herb to learn the sound and timing of the click. (Allow it to cool fully between heatings.)

Step 1 - Grind your herb

Grind to a medium-fine, even consistency with a dry herb grinder. Too coarse and heat won't penetrate evenly; too fine (dust) and it can clog the screen and pull through. An even grind is the most underrated determinant of good vapour.

Step 2 - Pack the bowl

Fill the chamber but do not compress it hard. Air needs to move through the load. A light, level pack that you can still draw through easily is the target. Because the bowl is tiny, a little goes a long way, start with less than you think.

Step 3 - Seat the cap

Place the cap firmly onto the tip. Make sure it's the cap, not the mouthpiece. The cap should sit flush.

Step 4 - Choose and apply your heat source

This is the only genuinely new skill. Use the decision tree below to pick a heat source, then apply it correctly.

With a torch: hold the flame 1–2 cm away from the cap, not touching and rotate the device slowly so heat spreads evenly around the cap. On a DynaVap, heat the mid-section of the capped tip (a common guide is "between the D and the N" of the logo), not the very end of the cap, to avoid a premature click before the herb is up to temperature. Keep rotating until you hear click #1.

With an induction heater: insert the capped tip into the heater's coil, wait for the click (and/or the heater's own indicator), then withdraw.

Step 5 - Draw

The instant you hear the click, stop heating and begin a slow, steady draw through the mouthpiece. Cover or uncover the airport with a finger to taste-test airflow: more open = cooler, wispier; more closed = denser. A single heating typically yields one to three slow draws before the chamber cools (you'll hear the cool-down click).

Step 6 - Reheat or finish

If herb remains and you want more, wait for the cool-down click, then reheat. After two or three heat cycles the herb is usually spent — it will look brown/toasted (not black). Tip out the AVB (already-vaped bud) and you're done.

Convection-device notes (Lotus / Sticky Brick / Vaponic)

There's no sealed cap or click. Instead you heat the element and draw simultaneously, modulating temperature live. Typical pattern: a few seconds of heat to bring the element up, then begin drawing while pulsing or maintaining the flame, watching the vapour. These devices reward slow, attentive draws and punish impatience with either no vapour (under-heated) or a scorched taste (over-heated).

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Heating methods compared: torch, induction, and soft flame

Your heat source shapes your whole experience. Here's how the realistic options stack up.

On butane quality

Use triple- or quintuple-refined butane (common quality brands include Colibri, Newport, and Vector). Cheap, unrefined gas leaves oily residues that taint flavour and clog torch jets over time. This single upgrade fixes a surprising number of "bad taste" complaints.

On induction heaters - the quiet upgrade

Many enthusiasts start with a torch and graduate to an induction heater for home use. Drop the capped tip into the coil, wait for the click, done no flame, no aiming, near-identical results every time. It's the closest a TED gets to "press a button," while keeping the device itself completely battery-free.

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Decision tree: which device is right for you?

Use this to narrow the field in under a minute.

Match your main goal to a starting device. The DynaVap M7 is the lowest-regret default; flavour, clouds, water-pipe use and budget each have a better fit.

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Advanced technique: dialling in flavour and clouds

Once you can reliably hit the click and draw, these refinements separate good sessions from great ones.

Steer temperature with where you heat and how fast you draw

On a click device, the click fixes your starting temperature, but you still control the rest:

• Want more flavour (lower effective temp)? Use a low-temperature cap, start drawing right at the click, draw a touch faster, and keep the airport more open. You'll get lighter, terpene-forward vapour and stretch the bowl over more draws.
• Want more density (higher effective temp)? Bring the flame slightly closer to the end of the cap (using the heat gradient rather than waiting longer), draw slower, and feather the airport more closed. You'll pull heavier compounds and bigger clouds at some cost to smoothness.

A useful rule from the community: to get hotter, move the flame, don't add time. Waiting longer after the click risks overshoot; using the cap's temperature gradient gives you heat without stacking it.

Microdosing

TEDs are arguably the best microdosing tool in vaping because the bowls are tiny and they only heat on demand. Loads as small as 0.05 g are practical. Adjustable-bowl models let you raise the CCD screen to shrink the chamber further for true single-draw microdoses.

Water filtration

Almost every modern TED taper fits a 10 mm or 14 mm water-pipe joint. Running vapour through water cools it dramatically, letting you take much larger, smoother draws, a favourite trick for high-temperature sessions that would otherwise be harsh.

Stir between heat cycles

For conduction-led devices, a quick stir of the bowl between cycles re-exposes unvaped material to the hot walls and gives more even, complete extraction. (A simple poker tool does the job.)

Concentrate adapters

Some ecosystems offer titanium concentrate adapters that turn a dry-herb TED into a flame/induction-powered concentrate device. This is enthusiast territory, mention it for completeness and for those expanding their kit.

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Maintenance and cleaning: keep it tasting clean

A clean TED tastes better, draws better, and lasts effectively forever. The good news: with no electronics, maintenance is trivial.

Routine (every few sessions)

• Brush out the bowl with a small dry brush or pipe cleaner once it's cool.
• Wipe the cap and tip to remove residue that can dull the click.
• Run a pipe cleaner through the stem/condenser to clear condensed resin.

Deep clean (every week or two of regular use)

• Disassemble the device into its parts (cap, tip, condenser, body, mouthpiece). On press-fit models the mouthpiece pulls out with a firm twist-and-pull; on screw models, unscrew it.
• Soak the metal parts in isopropyl alcohol (IPA) for 20–30 minutes, then rinse thoroughly with water and dry completely before reassembly. Many all-metal parts are even dishwasher-safe.
• Special-finish caution: darkened/coloured/nitrocarburized finishes and wood components should NOT be soaked in IPA alcohol can damage the finish or the wood. Wipe these clean instead, and treat wood with a suitable conditioning wax.
• Reassemble once everything is bone-dry.

Wear parts to keep on hand

• CCD screens - replace when warped, clogged, or damaged.
• O-rings - replace when parts feel loose or seals fail (a few cents each).
• Captive caps - easy to misplace; a spare in the kit saves a ruined trip.

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Troubleshooting: fix the most common problems

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Safety and best practices

• The cap is hot. It reaches vaporization temperature, treat it like the business end of a soldering iron until it has cooled (the second click is your cue).
• Mind your flame. Use torches responsibly, away from flammable materials, hair, and overhangs. Refill in a ventilated area, away from ignition sources.
• Store butane correctly - away from heat and direct sun.
• Know your device. Never confuse the cap and mouthpiece, they're at opposite ends for a reason.
• Inhale responsibly. Any aerosol carries risk; start low and slow, and stop if you feel unwell.
• Keep away from children and pets, and store devices and materials securely.
• Use only legal materials, and follow the laws of your jurisdiction (see the next section).

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Battery-free vaporizers in Europe and Malta

TEDs are popular across Europe precisely because they're independent of power and resilient in the cold, a butane torch doesn't care about winter, and there's no battery to falter on a campsite or at a festival. For European buyers there are also practical advantages: no lithium battery means no airline battery restrictions on the device itself, and the lack of electronics means nothing to become obsolete as standards change.

A note on legality and compliance

Laws on cannabis and related products vary significantly between countries, and the device (the vaporizer) is legally distinct from what you put in it. A dry herb vaporizer is a piece of hardware; legality depends on your local rules and on the material used. In Malta, personal-use cannabis rules changed in recent years, but specifics, possession limits, home cultivation, where and how products may be bought and used, are governed by current Maltese law and the relevant authorities.

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Frequently asked questions

What is a battery-free dry herb vaporizer?

It's a device that heats dry herb to release its active compounds as vapour, using an external heat source, a butane torch or an induction heater, instead of an internal battery. There's nothing to charge, few parts to break, and it works anywhere you have a flame.

Is a manual vaporizer better than an electronic one?

Neither is universally better. Manual TEDs win on reliability, durability, off-grid use, cost of ownership, and herb efficiency. Electronic vapes win on precise digital temperature control and button-press simplicity. Many enthusiasts own both for different situations.

Is vaporizing the same as smoking?

No. Smoking burns plant material (combustion), which destroys compounds and creates byproducts. Vaporizing heats the material below combustion to release compounds as an aerosol. Published research reports far fewer combustion byproducts from vaporization than from smoking, though no inhalation method is risk-free.

What temperature should I vaporize dry herb at?

A practical working range is roughly 180–220 °C. Lower (~160–180 °C) favours flavour and lighter compounds; higher (~205–220 °C) gives denser vapour and heavier compounds. Stay below ~230 °C to avoid combustion. Click-style devices are engineered to click within the useful range.

Do I need a special torch lighter?

A butane jet (torch) lighter is strongly recommended, single-flame for precision indoors, dual/triple-flame for wind and cold. Ordinary soft-flame lighters work poorly and unevenly. Use triple- or quintuple-refined butane for the cleanest taste and to avoid clogging.

What is an induction heater, and do I need one?

An induction heater uses an electromagnetic coil to heat the cap with no flame. You don't need one, but it gives flame-free, highly consistent, repeatable heating, popular for home use. The vaporizer stays completely battery-free; only the heater is powered.

How much herb do I use?

Very little. Bowls are tiny - often 0.05–0.1 g - which makes TEDs excellent for microdosing and for stretching your material. Start with less than you think and pack loosely so air can flow.

Why does my vapour taste burnt?

Usually because you reheated before the cool-down click, held the flame too long, or used cheap butane. Wait for the second click before reheating, shorten your heating, and switch to refined butane. Black (not brown) spent herb means you combusted.

How do I clean a manual vaporizer?

Brush out the bowl regularly and run a pipe cleaner through the stem. Every week or two, disassemble and soak the metal parts in isopropyl alcohol, then rinse and dry fully. Do not soak wood or special-coated parts, wipe those instead.

How long does a battery-free vaporizer last?

Effectively years to a lifetime. With no battery or electronics, the only wear items are cheap o-rings, screens, and the occasional cap. People routinely use the same unit for a decade.

Can I use it with a bong or water pipe?

Yes, most modern TEDs taper to 10 mm or 14 mm joints. Water cooling lets you take bigger, smoother draws, especially at higher temperatures.

Are these legal to buy in Malta?

The vaporizer device is hardware and is sold by compliant retailers; what you may legally put in it depends on current Maltese law. Always follow local regulations and buy from a compliant seller.

Which battery-free vaporizer is best for beginners?

An all-metal click-style device such as the DynaVap M7 is the usual recommendation: durable, affordable, forgiving thanks to the click, and compatible with the whole accessory ecosystem. Pair it with a single-flame torch and refined butane.

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Glossary of terms

• Already-vaped bud (AVB) - spent herb after vaporizing; brown/toasted, not black. Already decarboxylated.
• Airport - the small hole in the body used to control airflow with a finger; some are adjustable or dual.
• Bimetallic disc - two bonded metals that flex at a set temperature, producing the audible click in click-style devices.
• Butane (refined) - the fuel for torch lighters; triple/quintuple-refined grades burn cleaner and protect flavour.
• Cap - the metal cap covering the chamber; on click devices it houses the temperature indicator. Gets hot.
• CCD screen - Circular Concave Disc; the fine screen at the base of the bowl that holds herb and shapes airflow.
• Combustion - burning (pyrolysis) of plant matter above ~230 °C; produces smoke and byproducts. The thing TEDs avoid.
• Condenser - the inner tube that cools vapour as it travels from chamber to mouthpiece.
• Conduction - heat transfer by direct contact (hot wall → herb).
• Convection - heat transfer by moving hot air through the herb.
• Decarboxylation - heat-driven conversion of acidic cannabinoid forms to their active forms.
• Induction heater - a flame-free, powered coil that heats the cap electromagnetically; the vaporizer stays battery-free.
• Microdosing - using very small amounts (e.g. 0.05 g); TEDs excel at this.
• O-ring - small rubber seal between parts; the main consumable.
• Pyrolysis - thermal decomposition (burning) of material; begins above the vaporization window.
• Radiation - heat transfer as infrared energy across a gap.
• Terpenes - aromatic compounds responsible for flavour and scent; mostly lower-boiling than cannabinoids.
• Thermal Extraction Device (TED) - a manual, battery-free vaporizer that uses external heat to extract compounds.
• VapCap - DynaVap's name for its click-style cap/vaporizer system.
• Water pipe adapter (WPA) - a taper (10/14 mm) that connects a TED to a bong for water cooling.

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Conclusion: the case for going battery-free

A battery-free manual vaporizer asks a little more of you on day one and gives back for years afterward. You trade "press a button" for a small, satisfying skill, and in return you get a device with nothing to charge, almost nothing to break, exceptional herb efficiency, and a working life measured in years, not battery cycles. It works on a mountainside in winter as well as it works on your sofa. It's the most honest, durable, and repairable corner of the whole vaporizer world.

If you're new, start simple: a click-style all-metal device, a single-flame torch, and refined butane. Give it three bowls of patience. Once the click becomes second nature, explore induction heating, low-temperature caps, and water cooling to tune flavour and clouds exactly to taste.