10-Pack Samsung INR21700 45T 4500mAh 35A High Drain Flat Top Battery – for E-Bike, Power Tools, Flashlights
Description
Description
Unlock uncompromising power and capacity with the Samsung INR21700 45T, a high-drain 21700 cell that delivers a massive 35A continuous discharge alongside an impressive 4500mAh capacity. This 10-pack is the ultimate power solution for high-demand applications: e-bike and e-scooter battery packs, heavy-duty cordless tools, high-wattage and extreme-output flashlights. The flat top design ensures broad compatibility with spring-loaded contacts and simplifies spot-welding for custom battery builds. With ultra-low internal resistance and Samsung’s trusted quality, the 45T provides relentless, cool-running power when your device needs it most.
Key Features
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35A Continuous High Drain – Engineered for the most demanding devices. Safely powers e-bike motors, power tools under load, sub-ohm builds, and FET turbo flashlights without dangerous voltage sag.
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4500mAh High Capacity – Significantly longer runtime than typical 4000mAh high-drain cells. Reduces the number of parallel cells needed in large packs while keeping weight down.
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Ultra-Low Internal Resistance (≤12mΩ) – Minimizes heat generation and energy loss under heavy loads. Keeps your cells cooler and your power delivery consistent.
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Flat Top Design – Compatible with all standard 21700 spring-contact chargers, battery trays, and flashlights. The flat terminal is ideal for spot-welding nickel strips into custom packs.
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10-Pack Bulk Value – Perfect for building a 36V or 48V e-bike pack, rebuilding multiple tool batteries, or powering a fleet of high-performance devices.
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Samsung Genuine Quality – Manufactured in Korea with strict quality control. Trusted by industries worldwide for consistent performance and safety.
Parameters
| Parameter | Specification |
|---|---|
| Model | Samsung INR21700 45T |
| Typical Capacity | 4500 mAh (0.2C discharge to 2.5V) |
| Minimum Capacity | 4400 mAh |
| Nominal Voltage | 3.6 V (typical operating 3.7 V) |
| Max Continuous Discharge | 35 A (cell temperature ≤ 80°C) |
| Max Pulse Discharge | Higher bursts possible (monitor temperature) |
| Discharge Cut-off Voltage | 2.5 V (do not over-discharge) |
| Standard Charge | CC-CV, 0.5C (2250 mA) to 4.2 V, cut-off 50 mA |
| Max Charge Current | 1C (4500 mA); fast charge above 1C requires temperature monitoring |
| Internal Resistance | ≤ 12 mΩ (AC 1 kHz) |
| Cycle Life | ≥ 250 cycles (to 80% capacity, 1C charge / 10A discharge) |
| Operating Temperature (Discharge) | -20°C to 60°C (ensure adequate cooling at sustained 35A) |
| Top Type | Flat Top |
| Dimensions | Approx. |
| 21.2 mm diameter × 70.3 mm length | Weight (single cell) | Approx. |
| 68 g | Package Includes | 10 × Samsung INR21700 45T cells in protective packaging |
Applications
Recommended For
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E-Bike & E-Scooter Battery Packs: 35A continuous supports powerful 500W–1500W motors, and 4500mAh capacity maximizes range. Ideal for 10S (36V) or 13S (48V) configurations.
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Cordless Power Tools: Impact drivers, drills, circular saws, and high-torque wrenches. Perfect for rebuilding tool packs with more power and longer runtime.
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High-Power Vaping: Mechanical mods and high-wattage regulated devices running sub-ohm builds (safely down to ~0.12Ω at 3.6V). Consistent voltage with minimal sag.
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High-Output 21700 Flashlights: FET-driven hot-rod lights and multi-emitter torches that demand 20–30A for maximum brightness.
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RC Cars, Boats & Drones: Competitive-level models requiring instantaneous high current bursts and extended play sessions.
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DIY High-Current Battery Projects: Spot welders, portable power stations, and any application where both power and capacity are critical.
Not Recommended For
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Low-Power Long-Runtime Devices: Solar lights, wireless sensors, and clocks. Choose a 5000mAh low-drain 21700 cell (e.g., Samsung 50G) for better economy and longer runtime.
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18650-Only Devices: This is a 21700 cell (21mm x 70mm). It will not physically fit in 18650 compartments.
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Applications Requiring Sustained Current >35A: For extreme competition use, choose cells with higher ratings.
FAQ
Q: Can I use this battery for my e-bike? How many cells do I need?
A: Absolutely. The 45T is an excellent choice for e-bike packs. A typical 36V pack uses 10 cells in series (10S). For increased range, you can add parallel strings (e.g., 10S2P with 20 cells, 10S3P with 30 cells). Always use a BMS rated for your pack’s voltage and current.
Q: Is this battery suitable for vaping?
A: Yes. With a 35A continuous discharge and low internal resistance, the 45T safely supports sub-ohm builds down to approximately 0.12Ω at 3.6V, providing a generous safety margin. Always verify your build’s current draw using Ohm’s law.
Q: What is the difference between the Samsung 45T and 40T?
A: Both are 21700 high-drain cells. The 45T offers 4500mAh with a 35A rating, while the 40T offers 4000mAh with a 35A rating (some rate it at 30A continuous). The 45T gives you roughly 12% more capacity, translating to longer runtime in your devices.
Q: Is this a protected cell?
A: No, the 45T is an unprotected flat top cell, which is standard for high-drain applications to allow full current flow. For multi-cell packs, you must install an external BMS rated for at least 40A.
Q: How should I store these cells when not in use?
A: Store at 3.6–3.7V (approximately 40–50% charge) in a cool, dry place. Use non-conductive battery cases to prevent accidental short circuits. Avoid storing fully charged or deeply discharged for extended periods.
Shipping and Returns
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Free Shipping: Enjoy free shipping on all orders over $65. For orders under $65, the shipping cost is $8.99.
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Delivery Time: Once shipped, orders typically arrive within 7–15 business days.
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Easy Returns: We want you to be completely satisfied. If you're not, you can return your product within 30 days of receiving your order. Please ensure the items are unused and in their original condition. For return instructions, please contact our support team.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Security
Refund Policy
OneAndes Return & Refund Policy
At OneAndes, we are committed to providing high-quality cylindrical lithium-ion batteries for your drones, vacuums, garden tools, and other power needs. If you are not completely satisfied with your purchase, we are here to help. Please read our full return policy below before initiating a return.
1. Return Window
You have 30 calendar days from the date you received your item(s) to request a return. Any return request submitted after 30 days will not be eligible for a refund or exchange.
2. Eligibility Conditions
To qualify for a return, all items must meet the following conditions:
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Condition: Items must be unused, undamaged, and in the same condition that you received them.
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Packaging: Items must be returned in their original packaging with all accessories, manuals, and protective covers intact.
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Proof of Purchase: A valid receipt, order confirmation email, or proof of purchase must accompany all returns.
Non-Returnable Items:
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Batteries that have been installed, used, or show any signs of wear.
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Items marked as “Final Sale” or “Clearance” at the time of purchase.
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Customized or special-order products.
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Gift cards.
If a returned item fails to meet these conditions, we reserve the right to deny the return or charge a restocking fee.
3. How to Initiate a Return
Follow these steps to return your product:
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Contact Us: Email our support team at support@oneandes.com with your order number and the reason for return. We aim to respond to all return requests within 24 hours on business days.
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Receive RMA: We will provide you with a Return Merchandise Authorization (RMA) number and return instructions. Do not ship any item without an RMA number.
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Pack Securely: Place the item in its original packaging, include all accessories, and clearly write the RMA number on the outside of the box.
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Ship to Our US Warehouse: Ship the package to the following address:
OneAndes Returns
10320 6th St
Rancho Cucamonga, CA 91730
USA*Important: Lithium-ion batteries are classified as hazardous materials (Class 9). Please follow the shipping guidelines provided in Section 4 below. We recommend using a trackable shipping service and purchasing shipping insurance, as we cannot guarantee receipt of your returned item.*
4. Return Shipping Costs
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Defective or Incorrect Items: If the item you received is defective, damaged in transit, or different from what you ordered, OneAndes will cover the return shipping cost. In this case, we will provide you with a prepaid return shipping label.
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Buyer’s Remorse / Non-Defective Returns: If you are returning an item for any other reason (e.g., no longer needed, ordered the wrong model), you are responsible for the return shipping costs. You must prepay the return shipping cost using a trackable carrier that accepts lithium batteries. We do not provide prepaid return labels for non-defective returns.
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Lithium Battery Shipping Regulations: By law, all returns must be shipped in compliance with applicable dangerous goods regulations. We will provide guidance on proper packaging and labeling. Failure to comply may result in carrier refusal, seizure, or additional fees. We are not responsible for returned items lost or rejected by the carrier due to improper shipping.
5. Refunds
Once we receive and inspect your return at our Rancho Cucamonga, CA facility, we will notify you via email of the approval or rejection of your refund.
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Approved Refunds: If approved, your refund will be processed to your original method of payment within 5 to 10 business days. Please note that depending on your bank or credit card issuer, it may take additional time for the credit to appear on your statement.
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Partial Refunds: In certain situations, only partial refunds may be granted:
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Items not in original condition, missing parts, or damaged for reasons not due to our error.
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Items returned more than 30 days after delivery (reviewed on a case-by-case basis).
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Non-Refundable Fees: Original shipping charges are non-refundable unless the return is due to our error (defective product or incorrect shipment).
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Restocking Fee: We do not charge a restocking fee for defect-free returns, but we may deduct the return shipping cost, which will be deducted from your refund.
6. Exchanges
We replace items only if they are defective or damaged upon arrival. If you need to exchange a defective item for the same product, please contact us at support@oneandes.com. Exchanges are subject to product availability.
If you ordered the wrong battery size or model, please follow the standard return process above and place a new order for the correct item.
7. Damaged or Missing Items
If your package arrives visibly damaged, please take photos of the package before opening and contact us immediately. We will work with the shipping carrier to file a claim and arrange for a replacement or refund. Damaged or missing item claims must be reported within 7 calendar days of delivery. For immediate assistance, you may also call us at (213) 316-8849.
8. Order Cancellation
You may cancel your order without penalty if it has not yet been shipped. To cancel, email us at support@oneandes.com as soon as possible. If the order has already been processed or shipped, you will need to follow the standard return process upon receipt.
9. Warranty
All OneAndes batteries are backed by a 12-month limited warranty against defects in materials and workmanship. This warranty does not cover damage caused by misuse, improper charging, unauthorized modifications, normal wear and tear, or use outside of manufacturer specifications. For warranty claims, please contact our support team.
10. Contact Us
If you have any questions about our Return & Refund Policy, please reach out:
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Email: support@oneandes.com
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Phone: (213) 316-8849 (Mon-Fri, 9 AM – 5 PM Pacific Time)
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Mailing Address: 10320 6th St, Rancho Cucamonga, CA 91730, USA
We aim to respond to all inquiries within 24 hours during business days. Please include your order number for faster assistance.