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🔥 Bitmain Antminer S21 – 216T / 225T / 235T Air-Cooled
Unlock next-level Bitcoin mining with the Antminer S21, available in 3 hashrate options — 216 TH/s, 225 TH/s, and 235 TH/s. 25% OFF automatically applied. No coupon needed!
🛠️ Key Features
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Hashrate Options: 216 TH/s / 225 TH/s / 235 TH/s (±3%)
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Power Consumption: ~3,500–3,700 W
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Efficiency: ~15.0 J/TH
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Voltage: 220–277 V
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Cooling: Dual high-speed fans (air-cooled)
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Algorithm: SHA-256
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Connection: Ethernet
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Condition: Brand new – sealed
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Warranty: 180 days
💰 Supports SHA-256 coins like Bitcoin (BTC), Bitcoin Cash (BCH), Bitcoin SV (BSV), Peercoin (PPC), DigiByte (DGB), and more.
🚀 Optimized for BTC profitability.
📦 Size & Weight
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Miner Dimensions: 15.7″ × 7.6″ × 11.4″
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Shipping Box: ~22″ × 14″ × 17″
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Net Weight: 38–41 lbs (17.5–18.5 kg)
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Gross Weight: ~45 lbs (20.5 kg)
💸 Profit Estimates
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Daily Profit: $8–$12 depending on hashrate
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Monthly Profit: $240–$360
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ROI: Approx. 7–10 months depending on electricity cost and unit
🧾 How to Use
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Connect to 240 V power
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Plug in Ethernet
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Access miner via local IP in your browser
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Input wallet & mining pool
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Start mining 24/7 automatically
No setup skills required — plug and mine
🛒 How to Order
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Click Add to Order
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Enter Billing Details
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Click Place Order
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Pay securely with USDT TRC20 or BSC via NowPayments
🌍 Shipping Info
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Ships worldwide
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Processing time: 1–2 days
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Tracked & insured
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Shockproof packaging
🔐 Why Shop Maimartt?
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✅ 25% OFF auto-applied
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✅ Secure crypto checkout
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✅ Trusted USA-based seller
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✅ Fast support – 7 days/week
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✅ Ready to ship from stock
📢 Final Note
Quantities are limited. Order now and power your farm with Bitmain’s best-value BTC miner of 2025.
👉 Start mining with Antminer S21 today!
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Sale!
Antminers
Bitmain Antminer S21 – 216T / 225T / 235T Air-Cooled
$2,297.25 – $2,811.75
+ Free ShippingBitmain Antminer S21 Air-Cooled – 216T to 235T. SHA-256 BTC miner with 25% OFF, in stock, secure crypto checkout. Ships worldwide.
| hashrate options | 216 TH/s, 225 TH/s, 235 TH/s |
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9 reviews for Bitmain Antminer S21 – 216T / 225T / 235T Air-Cooled
Have a coupon? Click here to enter your code
Tessa Y. –
Quiet, powerful, and earns steady BTC every day. Highly recommend for mid-sized setups.
Calvin F. –
Running 6 of these now. Power draw is decent and ROI looks solid. Great value.
Iris G. –
Arrived well packed and working. I love that I had 3 hashrate options.
Aiden U. –
25% discount made it the best deal I’ve seen this year. Thank you Maimartt!
Lauren P. –
Easy to install, plug-and-play. Already earning daily BTC.
Xavier J. –
Fast shipping and great support. Will order again.
Elise H. –
This model is very efficient for its price. Highly recommended.
Carter B. –
Mining with the 225T version. No issues at all.
Fiona S. –
Better than the S19 series I’ve used before. Fans are loud but effective.