Hammer Miner BC01
- Hashrate
- 1.5 TH/s
- Power
- 31 W
- Efficiency
- 21 J/TH
- Noise
- 49 dB
Home miner Lottery miner Desktop In production
A fanless miner built into a walnut base with an aluminium hotplate, so the waste heat keeps a mug of coffee warm. It mines up to 1 TH/s on 27 W over USB-C and has an OLED screen and Wi-Fi web setup. It is silent, made in America, and more a desk toy than a heater.
Best price $249
$249.00 per TH · New · In stock at Altair Technology · excl. tax
| Store | Trustpilot | Condition | Availability | Listed price | In your currency | Per TH | Checked | Link |
|---|---|---|---|---|---|---|---|---|
| Altair Technology Ships from United States | TrustScore 4.7 out of 5, 623 reviews | New | In stock | $249 excl. tax | $249 | $249.00 | 12 Nov 2026 | Visit |
| GekkoScience Ships from United States · Maker's own shop 3 in stock (can be backordered) | TrustScore 3.3 out of 5, 3 reviews | New | In stock | $270 | $270 | $270.00 | 4 Nov 2026 | Visit |
| The Solo Mining Co Ships from United Kingdom · 650 GH/s unit Store notes listed as up to about 650 GH/s on about 23 W with Bitmain BM1362 chips (the maker now sells a 1 TH / 27 W version); enamel mug included | TrustScore 4.9 out of 5, 205 reviews | New | In stock | £300 | $399 | $614.14 | 7 Nov 2026 | Visit |
| Bitcoin Merch Ships from United States | TrustScore 4.4 out of 5, 1,082 reviews | New | In stock | $500 | $500 | $499.99 | 4 Nov 2026 | Visit |
Prices as listed on each store's page on the date shown, without shipping. Prices marked excl. tax leave out VAT or sales tax, and others may too. Per TH uses the hashrate of the unit each store sells. Converted at ECB rates of 11 Nov 2026. Trustpilot scores are for the store, not the device. Each store's name opens its page, with everything it sells and its reviews.
The maker gives no hashrate for this mode, so we can't work out its mining income.
*What a pool would pay on average at today's difficulty, block reward and bitcoin price, before pool fees. Solo miners usually earn nothing, and very rarely a whole block. A plain electric heater turns the same electricity into the same heat, so the mining income is what makes the difference.
Payback is how long the bitcoin a device earns takes to add up to its price. It leaves out electricity, which buys the heat: compare earnings per kWh with your electricity price to see whether mining alone covers it. It uses the average of the last 3 months, to 12 Nov 2026: bitcoin at $79,558, 969 EH/s on the network and 3.15 BTC a block, less a 2% pool fee, for the hours you set. It cuts the block subsidy in half at each halving, the next around Apr 2028, and otherwise assumes those carry on unchanged, which they won't. Income at today's difficulty and price is about 17% below that average. Hashrate usually rises, though miners that stop paying after a halving may switch off, which leaves more for the rest. How we work it out.
| Brand | GekkoScience |
|---|---|
| Model | Mein Coffee (1 TH version) |
| SKU | — |
| Type | Lottery miner · Home |
| Form factor | Desktop |
| Cooling | Air |
| Production status | In production |
| Launch date | — |
| Hashrate | 1 TH/s |
| Power consumption (stock) | 27 W |
| Mining efficiency | 27 J/TH * |
| ASIC chip | Not known yet |
| Heat output | 92 BTU/h |
| Input voltage | USB-C (adapter included) |
| Frequency | — |
| Net dimensions (W × D × H) | — |
| Net weight | — |
| Noise | — |
| Operating temperature | — |
| Area heated | Less than 1 m² (our estimate) |
| Colours | — |
| Company based in | United States |
| Made in | United States |
* Not confirmed by the maker's own documents yet.
Reviews are posted on Nostr, so they belong to the people who wrote them, not to us. Sign in with a Nostr extension or signer app to add yours.
Chip by version: Original 650–700 GH/s, 23 W version: BM1362 (reported). See the chips page.
Not yet confirmed from the maker's own documents: launch date; efficiency; dimensions; weight; noise; operating temperature.
Spotted a mistake? Let us know.