Frequently asked
Questions (FAQ)

We accept PayPal, Klarna (invoice, instalments, instant bank transfer), Visa, Mastercard, American Express and Apple Pay. All payments are handled securely over encrypted connections.

Yes, as long as your order has not shipped yet you can cancel it. Just send us an email at support@bitminer24.de with your order number.

Changes are possible as long as the order has not shipped. Contact us as soon as possible by email at support@bitminer24.de.

After dispatch you receive an email with a DHL tracking link, which lets you follow your parcel in real time. If you have not received an email, check your spam folder or contact us.

Yes, you automatically receive an invoice by email once your order is complete.

Shipping within Germany takes 2 to 3 business days with DHL, and 4 to 7 business days to Switzerland. Business days here are Monday to Friday, excluding public holidays. Shipping is free on all Nerdminer orders.

These times apply from dispatch. Items whose batch is currently in production are offered as a pre-order. They are marked on the product page, which also states the binding dispatch date. If we miss it, you can cancel free of charge and get a full refund.

Yes, you have a 14-day right of withdrawal. The Nerdminer must be returned in perfect condition and in its original packaging. Contact us by email and we will send you a return label.

If your Nerdminer arrives faulty, contact us straight away by email with photos of the damage. We will send a replacement immediately, free of charge and without any fuss.

You have a 2-year statutory liability for defects. On top of that we give you a 14-day right of withdrawal and free shipping. Your purchase is covered by PayPal buyer protection and Klarna buyer protection.

A Nerdminer is a small solo bitcoin miner built on an ESP32 microcontroller. It performs real SHA-256 calculations and takes part in the bitcoin network, like a ticket to the bitcoin network. The chance of finding a block is very small, but the prize would be 3.125 BTC.

Honestly: extremely unlikely. A single Nerdminer V2 delivers around 200 kH/s, while the bitcoin network as a whole sits above 800 EH/s. Statistically a single device would have to run for several thousand years to find a block on average.

That is exactly why the Nerdminer is not a source of income but a ticket to the bitcoin network. The chance is small, but real: somewhere in the global solo mining network a block is found roughly every 2 to 3 weeks, and in 2025 alone there were more than 22 solo block finds. Among them, repeatedly, hobby miners with a single small device.

Anyone buying a Nerdminer is mainly buying the hardware, the fun of mining and what they learn, plus a small but real shot at a block.

Yes. Every Nerdminer from BitMiner24 arrives preconfigured and is ready to run in under 3 minutes. All you have to do is connect USB-C, join your Wi-Fi and enter your bitcoin wallet address.

The Nerdminer connects to a wall socket through a USB power adapter. Thanks to its very low power draw you can also run it straight from your laptop or a power bank. You can add a matching USB cable to your order for a straightforward start.

The Nerdminer V2 draws less than 1 watt. That works out at under 1 euro a year in electricity, less than an LED lamp.

No. The Nerdminer is plug & play and comes fully preconfigured. All you need is a USB-C cable and Wi-Fi. Our guide section holds more than 30 walkthroughs for every step.

Yes, the Nerdminer can be unplugged and replugged at any time. It saves your Wi-Fi and wallet settings and reconnects to the mining pool automatically on the next start.

The OLED display cycles through several screens: block templates (the current mining task), KH/s (your hash rate), million hashes (the total of your calculations), valid blocks (valid blocks found), current block (current block height), network EH/s and current difficulty.

The NerdNOS is a compact bitcoin solo miner with a real BM1397 ASIC chip, the same chip originally built into industrial Antminer S17 machines. It reaches roughly 80 to 120 GH/s at about 8 watts, some 480,000 times the hash rate of the Nerdminer V2 (250 kH/s, ESP32 microcontroller). The V2 is a learning device and a lottery ticket, the NerdNOS is the step up for solo mining enthusiasts. A direct comparison of all the specs: NerdNOS vs Nerdminer V2, the buying guide.

Audible, but quiet, comparable to a laptop fan turning gently at idle. No problem on a desk, less advisable in a bedroom. The active fan is physically necessary because the BM1397 ASIC produces considerably more heat at 8 W than the silent V2 microcontroller. If you need absolute silence, take the V2.

At around 7.8 watts in continuous operation (measured over 24 hours) that is about 70 kWh a year, or roughly 22 € a year at German household electricity prices (~30 ct/kWh). That puts the NerdNOS in the same class as a Wi-Fi router: fine in a living room and easy on the household budget. Full measurements and comparisons: NerdNOS power consumption, measured rather than estimated.

No. The NerdNOS comes as a complete set with power supply and USB-C cable. Setup runs entirely through the NerdNOS web interface in your browser: plug it in, join the setup Wi-Fi, enter your home Wi-Fi, pool and bitcoin address, done. If you have ever put a smart home bulb on your Wi-Fi, you will manage the NerdNOS in under 5 minutes. Step by step: setting up the NerdNOS.