Lot of 10 Used Antminer S19k Pro 115TH

Description

Antminer S19k Pro 115TH is a high-performance Bitcoin ASIC miner designed for SHA-256 mining with stable and efficient operation. This listing includes a lot of 10 units upgraded with Braiins OS, boosting performance up to 125TH/s per miner, making it ideal for professional mining farms. —

Key Features

Lot of 10x Antminer S19k Pro miners
Hashrate: 115TH/s (up to 125TH/s optimized)
Algorithm: SHA-256 (Bitcoin mining)
Total tuned hashrate across the lot: ~1.25 PH/s (10 × ~125 TH/s)
Braiins OS firmware installed
10x PSUs included
Tested and fully functional units

Condition

Used mining hardware with normal cosmetic wear such as dust, scratches, and label marks. All units are fully tested and working before shipment.

Important Information

Industrial mining equipment – very loud operation
Not suitable for residential environments
Buyer responsible for power setup and configuration
Performance may vary depending on environment

Shipping & Resources

Fast and secure worldwide shipping with tracking included. Learn more about Bitcoin mining: Official Bitcoin Website Mining hardware info: Bitmain Official Website

Guides and resources

- Bitcoin Mining Guide
- ASIC Miners Collection

At 23 J/TH, S19k Pro machines need electricity below about 5.8¢/kWh to make sense at 10 August 2026 hashprice. The ASIC miner buying guide shows the break-even calculation and how to size total load for a lot this size.

Specifications

Units in this lot	10 machines
Model	Antminer S19k Pro 115TH
Algorithm	SHA-256
Coins mined	Bitcoin (BTC)
Hashrate	115 TH/s per machine, tuned toward ~125 TH/s on Braiins OS
Total lot hashrate	~1.15 PH/s stock, ~1.25 PH/s tuned
Efficiency	23 J/TH at the factory rating
Input voltage	200–240 V AC per machine, 47–63 Hz, 20 A (Bitmain S19K Pro specification: two AC input wires, 10 A per wire). None of the ten runs on 110 V
Total lot power draw	≈ 26.5 kW continuous at the stock rating (10 × ≈2,645 W, computed from the 115 TH/s and 23 J/TH above, not metered). The Braiins tune raises it
Firmware	Braiins OS, installed
Power supply	10 PSUs included
Condition	Used, tested working — normal cosmetic wear
Size and weight per machine	400 × 195 × 290 mm bare, 570 × 316 × 430 mm boxed. 12.85 kg net, 14.5 kg gross — Bitmain’s published S19K Pro specification. Bitmain publishes that table against the 120 TH/s bin; the chassis is common to the S19K Pro bins
Total lot freight weight	≈ 128.5 kg net, ≈ 145 kg gross for the ten boxed machines (10 × Bitmain’s published figures — computed here, not weighed). Pallet, strapping and any overpack are on top of that, and an LTL quote is priced on the gross weight and the pallet footprint, not on the bare miners

What ten of these actually needs. At the factory rating this listing already quotes — 115 TH/s at 23 J/TH — each machine draws about 2,645 W, so the lot is roughly 26.5 kW continuous before any Braiins tune, which raises it. That is a computed figure, not a metered one: it is this page’s own two numbers multiplied out, and the tuned profile will be higher. Ten S19k Pros is a 240 V three-phase panel and a real distribution plan, not a garage circuit. Tell us your service and we will tell you honestly whether the site carries the lot.

What’s in the box

10 × Antminer S19k Pro 115TH — this listing is the whole lot, not one machine from it
Power supply unit, as stated in this listing
Braiins OS, already installed and configured
Nothing that is not listed above. Cords, controllers, brackets and spares are only included when this listing names them — if you need to know before you pay, ask on +1 (781) 577-0377 or ns@ingmining.com and we will confirm in writing what is physically in the crate

Questions buyers ask about this lot

What can I mine with it?

It mines Bitcoin (BTC). The algorithm is SHA-256, and ASIC silicon is single-purpose: it will mine coins on that algorithm and nothing else, whatever the price of anything else does.

What condition is it in, and what does that grade mean?

This is second-hand stock. We describe it the way we found it: tested working means it ran on our bench at the stated hashrate, refurbished means it was also cleaned, re-pasted or had parts replaced, and as-is means it is sold without a working claim. The grade for this unit is stated in the description above; where a listing states no grade, it says so rather than implying one. Cosmetic wear — dust, scratches, label marks — is normal on hardware that has been mining and is not a fault.

What should I check the day it arrives?

Photograph the pallet or box before you open it, keep the packaging, and run the 48-hour acceptance test straight away. Freight claim windows are short, and a fault found on day two is a conversation while a fault found on day thirty is an argument. Our own six-step bench procedure is published in full, so you can repeat exactly what we did.

Shipping cost for this exact item, and how warranty and returns work here, are answered in the Shipping & buying tab on this page. Anything else, ask a person on +1 (781) 577-0377 or ns@ingmining.com — we would rather talk before you buy.

The used lot that survives a normal power price

This is the only lot on this shelf that is not a base S19, and that difference is the used-versus-new argument in one line. On the hashprice derived at block 961,911 on 10 August 2026 on used ASIC miner fleet economics, a used S19 at 95 TH/s breaks even at about 3.89 cents per kilowatt-hour and a used S19k Pro at about 5.78. Filled with S19k Pros, a megawatt holds about 378 machines and produces 43.47 PH/s, against 29.16 PH/s for the same megawatt of stock S19s. If your power is not behind the meter, curtailed or flared, this is the used machine that still works where the S19 lots do not.

It is also the only lot here whose title states that power supplies are included. On the others you have to ask rather than infer, and on a hundred-unit order that one question is a five-figure swing — ask about cords and the plug standard in the same sentence.

Where used stops winning is worth saying plainly on a listing that is trying to sell you used hardware. Between roughly four and nine cents a kilowatt-hour, new silicon earns and used does not; past about three years of holding the machine the efficiency gap compounds and never comes back; and difficulty only ever pushes break-even rates downward, so the machine closest to its own break-even is the first one you switch off. The payback table at three, five and seven cents against new fleets is on used ASIC miner fleet economics, and the repair-cost side of the same decision is in used vs new ASIC miners.

Related hardware and where this sits in the store

Other fleet lots and single units from the same family:

Categories: Bitmain Antminer, Bitcoin miner, Used ASIC miners and Air Cooling.

Delivery day on a lot this size is its own procedure — what to write on the freight receipt before you sign, reconciling the count and the serial numbers, why the machines come up in groups rather than together, and how to sort the ones that do not: receiving a used miner lot.

Where this listing sits

This one is on the used and refurbished shelf. It is second-hand hardware. The grade for this specific unit is stated in the description on this page — and where a listing states no grade, it says so rather than implying one.

What our grades mean

These are the only words we use, and each one means a specific thing. They are not interchangeable and we do not soften them to move stock.

New	Unused stock. Factory sealed unless the listing says otherwise — “new, open box” means exactly that, and the listing will say it.
Tested working	Second-hand, and it ran on our bench at the hashrate the listing states. We measured it; we are not repeating what the last owner told us. Expect cosmetic wear.
Refurbished	Tested working, plus work done: cleaned, thermal paste and fans dealt with, failed components replaced. The listing says what was actually done to that unit rather than using the word as decoration.
As-is / for parts	Sold with no working claim at all, at a price that reflects it. Buy these to repair or to harvest. If a listing says as-is, assume it does not hash until you have proved otherwise.
Untested	We have it, we have not powered it, and we are not going to pretend we did. Rarer than as-is and always stated explicitly.

What a grade here does not mean

Cosmetic wear is not a fault. Dust, scratches, scuffed labels and discoloured plastics are normal on hardware that has been earning. We photograph what we have; if the pictures matter to you, ask for more and we will take them.
A grade is not a warranty. Warranty terms are stated per listing, never per store — see the Shipping & buying tab. A tested-working grade describes what the machine did on our bench, not what we owe you in six months.
A boosted hashrate is not a spec. Where a unit ships on tuned firmware we say so and we give the factory figures too, because overclocking raises power faster than it raises hashrate — a tuned machine is less efficient per terahash than stock, not more.
We will not invent a grade to fill a field. If a unit came in without history and has not been through the bench, its listing says that.

How the grade gets decided

A used-hardware seller who will not tell you how they test is asking you to take the grade on trust. Ours is published: the six-step bench procedure every machine goes through, and the five measurements that get recorded — per-board hashrate, chip count, measured wall power rather than the nameplate figure, hardware error rate, and temperature under sustained load. When it reaches you, run the 48-hour acceptance test straight away, while the freight claim window is still open.

Buying second-hand for the first time? How to buy a used ASIC miner without getting burned is the long version, written from the repair bench rather than from a spec sheet.

Shipping

This listing is quoted rather than priced, and freight is quoted with it. Tell us where it is going and we will confirm the shipping cost to that address with the price, before you pay — on a multi-unit or pallet order that is the only honest way to do it.

Outside the United States the checkout quotes a flat international rate. On multi-unit or pallet orders, contact us before ordering so freight to your destination can be confirmed properly. What to check when the pallet arrives, and how a freight claim works, is covered in the mining hardware shipping guide.

What to do the day it arrives

Photograph the pallet or the box before you open it, and keep the packaging until you are satisfied. Freight claim windows are short, and damage found on day two is a conversation while damage found on day thirty is an argument.

Then run the 48-hour acceptance test straight away, while that window is still open. It is the same ground our own bench covers, so you can compare like for like: how the grade on this listing was arrived at, and the five measurements we record, are set out in the Condition & grading tab on this page.

Condition, warranty and returns

Condition: Used — second-hand stock. The grade for this unit is on the listing above, and where a listing states no grade it says so.

Warranty is stated per listing, not across the catalogue. Some units carry a manufacturer term and say so above, naming the term and the date it runs from. Many units, particularly used and AS-IS stock, carry none, and those listings do not claim one. There is no blanket warranty covering a catalogue that runs from sealed factory stock to a hashboard sold for parts. For what a mining warranty normally covers, see ASIC miner warranty explained.

Returns: ask for the terms on this unit before you pay. No single returns window is published for the whole store, because the sensible terms on a tested working machine and on a board sold AS-IS for parts are not the same terms. Email or call and ask what applies to this exact item — it is a two-minute conversation and a great deal cheaper than a dispute.

Where you are going to run it

Two questions decide whether a machine like this works where you live, and neither of them is about the miner: can the circuit carry it, and what does your electricity cost? Most full-size machines here want a dedicated 240 V circuit and run at 70–75 dB continuously. A few do not — the Avalon Q publishes 45–65 dB and runs on 110–240 V — so read the voltage and noise figures on this listing rather than assuming. ASIC miner power requirements covers breaker sizing and what the install actually involves; cooling covers where the heat and the noise end up.

If your power is not genuinely cheap, hosting is the question to be asking instead of which miner to buy. Break-even electricity rate is hashprice divided by (24 × J/TH), and hashrate cancels out of it entirely — which is why a cheap old machine on expensive power loses money faster than an expensive new one does. The buying guide has the arithmetic; work out your own number before you buy anything.

If hosting is the answer, get written answers on three things before you sign: who pays for repairs, what the uptime commitment actually pays out when it is missed, and how curtailment is handled. A flat per-machine monthly rate is where most of the unpleasant surprises live. Types of mining farm compares the models and hosting versus cloud mining covers why owning the hardware is the better end of that trade. Ask us before you commit — it is a five-minute call and a great deal cheaper than a contract you cannot get out of.

What we do once it is racked, wherever that is. Deployment, firmware and monitoring are a service we run rather than a line on a page: pool and network setup, Braiins OS or VNish tuning, offline alerts, and board-level fault-finding when a machine stops hashing — ASIC mining consulting sets out what that covers. The hosting agreement itself is between you and the facility. What we can give you is the number most hosting disputes turn on: what this machine measured at the wall on our bench, so a shortfall on site is a figure to compare against rather than an argument about what it should have been doing.

Who you are buying from

ING Mining LLC, Hanson, Massachusetts. ING MINING® is a registered U.S. trademark; our marketplace feedback is on the reviews page and the longer version of who we are is on about. Reach a person on +1 (781) 577-0377 or ns@ingmining.com.

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