Wall Warts, UPS & Copper Transformers

Weight sorts everything — a heavy warm brick is a copper transformer, a featherweight one is a switching supply worth its cable. The same rule sorts UPSs, microwave transformers and induction-cooktop coils.

Cu 70–110 g/lb (linear warts)Base UPS: sealed lead-acid core

eBay typical$5–20per lb

Refiner pays$0.45per lb

Metal in it$0.96per lb at 4 Aug 2026 spot

Confidencemedof the yield figures

How to spot it

Linear wall warts (pre-2005 answering machines, modems, keyboards, phones), UPS units (APC/CyberPower — transformer + lead-acid), microwave oven transformers, induction cooktops (200–400 g litz copper coil each), doorbell and sprinkler transformers, old battery chargers. Toroidal transformers from audio amps are the premium find.

Metal content

Metal	Quantity	Notes
Copper	70–110 g/lb (linear warts)	The transformer is half the weight and a third copper; switching warts are near-empty
Base metal	UPS: sealed lead-acid core	Battery weight pays lead price; big toroids and MOTs run richer than small warts

At 4 Aug 2026 spot prices that works out to $0.96 per lb of contained metal — Copper 90 g = $0.96. A refiner paying $0.45 per lb returns about 47% of that, which is normal: refining costs money and the buyer takes a margin.

Safe removal

Working temperature: No heat needed — mechanical teardown only

Warts: score the seam, split with a mallet, transformer out, cable to ICW. UPS: battery out first (core-charge it at the yard), transformer and charge board separate. Induction cooktop: one shroud, six screws, lift the litz pancake whole. MOT: hacksaw the weld or sell whole — yards buy them as-is.

Hazards

⚗ Home acid refining

The practical answer for nearly everyone: sort, concentrate, and sell to a licensed refiner. A good refiner recovers 85–98%, assays rather than guesses, pays on the assay, and takes the waste liability. Your edge as a scrapper is identification and sorting — not chemistry.

☠ Lead — dust more than fume

NEVER dry sweep or use compressed air on a scrapping bench. HEPA-vac or wet-wipe only.

⚡ Stored high voltage

NEVER short a large capacitor with a screwdriver. It welds the tip, blasts molten metal at your face, and can rupture the can.

Before you scrap it

Modest but real: matched OEM laptop/console supplies $10–25, audio toroids $15–60 to amp builders, working UPSs with fresh batteries $30–80 locally. Generic warts: straight to the bucket.

The common trap

Time is the trap — splitting a 200 g wart yields ~35 cents of copper, so this category only pays as background volume: a bucket that fills itself while you do other work, cracked open during dead time. The exception is toroids and MOTs, which are worth pulling on sight.

Questions

How much gold is in wall warts, ups & copper transformers?

Copper: 70–110 g/lb (linear warts). At current spot that is about $0.96 of contained metal per pound.

How do you identify wall warts, ups & copper transformers?

Weight sorts everything — a heavy warm brick is a copper transformer, a featherweight one is a switching supply worth its cable. The same rule sorts UPSs, microwave transformers and induction-cooktop coils.

How do you remove wall warts, ups & copper transformers safely?

Is wall warts, ups & copper transformers worth more working than as scrap?

Modest but real: matched OEM laptop/console supplies $10–25, audio toroids $15–60 to amp builders, working UPSs with fresh batteries $30–80 locally. Generic warts: straight to the bucket.

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