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Bitmain Antminer S21+ 216T 225T 235T 3564W Bitcoin Miner BTC Mining
About US
Our Strengths:
- 🏭 In-house R&D and Manufacturing
- 🎨 Seasoned Industrial Design Experts
- 🔧 Integrated Hardware and Software Development
Product Description
Antminer S21+ – Enhanced ASIC Bitcoin Miner with Superior Efficiency
The Bitmain Antminer S21+ is a performance-upgraded version of the S21, increasing its hashrate from 200 TH/s to an impressive 216 TH/s, making it one of the most powerful bitcoin miners in its class.
Built for SHA-256 algorithm mining, the S21+ operates at a power consumption of 3564W, offering excellent energy efficiency for both professional crypto mining farms and high-output operations.
With advanced ASIC miner architecture and optimized power management, the Antminer S21+ delivers stable, long-term performance—giving miners a reliable edge in the competitive bitcoin mining landscape. Whether you're expanding capacity or upgrading equipment, this bitcoin machine is a strong choice for maximizing ROI.
Antminer S21+ Specification
| Manufacturer | Bitmain |
| Model | Antminer S21+ (216Th) |
| Release | Feb 2025 |
| Size(w/o package) | 450*219*293mm |
| Size(w/o package) | 630*350*430mm |
| Noise level | 75db |
| Fan(s) | 2 |
| Hashrate | 216/225/235T |
| Power | 3564/3713/3878W |
| Input voltage, Volt | 220-227V |
| Interface | Ethernet |
| Temperature | 10 – 40 °C |
| Humidity | 10 – 90 % |
Refund policy
We hope you are satisfied with every product you purchase from Luckspiders.
If you are not satisfied with your order, please feel free to contact our customer service team, and we will be happy to assist you.
🔄 30-Day Money-Back Guarantee
We offer a 30-day no-questions-asked return policy.
All products are covered by a 30-day 100% money-back guarantee.
To request a return or refund, please contact our customer service team within 30 days of receiving your order.
📩 Customer Service Email: service@luckspiders.com
❌ Order Cancellation
All orders can be canceled before shipment.
If your order has been paid for but needs to be modified or canceled, please contact us within 6 hours of placing the order.
Once the order has entered the shipping process, it cannot be canceled.
🚫 Non-Returnable Items
The following types of items are not eligible for return or refund:
Customized products (e.g., special orders, personalized items)
⚠️ No Refunds Under the Following Circumstances
We will not be able to provide a refund under the following circumstances:
📍 Order undeliverable due to buyer's reasons
(e.g., incorrect or incomplete shipping address provided)
💥 Product damaged after delivery due to human error
Please check the packaging and product condition immediately upon receiving the package. If you find any problems, please contact us promptly.
📦 Damaged or Defective Items
If you receive a damaged or defective item, please contact us as soon as possible after receiving the item and provide clear photos or videos explaining the situation.
We will provide you with a replacement or refund solution based on the actual situation.
📧 Need Help?
If you have any questions about returns, refunds, or your order, please feel free to contact us via email:
👉 service@luckspiders.com
Our customer service team will reply as soon as possible and assist you in resolving the issue.
How to pay with a credit card
💳 Luckspiders Payment Methods & Security
🏦 Accepted Payment Methods
We accept the following secure payment options:
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Visa ✅
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MasterCard ✅
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PayPal 💻
When choosing PayPal at checkout:
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You will be redirected to the PayPal website.
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After completing your payment, you will return to https://luckspiders.com/ to finalize your order.
If your credit card transaction is approved, the amount will be held immediately and you will receive an order confirmation via email ✉️.
If the transaction is not approved, your order will be canceled.
For any issues with card payments, please contact your bank or card provider 🏦.
💡 How to Use Credit Card Payment via PayPal
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Select PayPal at checkout.
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Choose “Pay with Credit or Debit Card” on PayPal’s page.
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Complete the payment process securely.
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Return automatically to Luckspiders to finalize your purchase.
🔒 Payment Security
Blocksolo uses Secure Sockets Layer (SSL) technology to encrypt and protect all data you send online.
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🔐 Look for the padlock icon at the top of your browser to confirm SSL encryption
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🌐 URLs will start with “https” instead of “http” — this indicates a secure connection
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✅ Luckspiders is registered with Cybertrust, ensuring that your information remains confidential between your browser and our server
EU Customers:
Due to the Second Payment Services Directive (PSD2), your card issuer may require verification. You may be redirected to a dedicated page or asked to authorize payment via your mobile device 📱. Once verified, you will return to www.luckspiders.com.
