6-Pack Molicel P50B 21700 5000mAh 50A (10C) High Drain Flat Top Battery – For E-Bike, Power Tools, High-Output Flashlights
Description
Short Description
The Molicel P50B represents the absolute pinnacle of 21700 cell technology, delivering an unprecedented combination of 5000mAh ultra-high capacity and a staggering 50A continuous discharge (10C). This 6-pack is engineered for the most demanding applications on the planet: high-performance e-bike battery packs, heavy-duty cordless power tools, competition-level vaping, extreme-output flashlights, and professional RC racing. With an ultra-low internal resistance of approximately 8mΩ, the P50B virtually eliminates voltage sag even under 50A loads, ensuring your device performs at peak output from start to finish. The flat top design is universally compatible with spring-contact devices and ideal for spot-welding into custom battery packs. When your project demands the absolute maximum in both power and capacity, nothing surpasses the Molicel P50B.
Key Features
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Unmatched 5000mAh + 50A Performance – The only 21700 cell that combines true 5000mAh capacity with a genuine 50A continuous discharge, delivering industry-leading energy density and power output in a single cell.
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10C Ultra-High Discharge Rate – Engineered for sustained extreme loads; the 50A rating provides ample headroom for even the most power-hungry devices.
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Ultra-Low Internal Resistance (~8mΩ) – Minimizes heat generation and voltage sag under load, keeping your device cooler and maintaining maximum power delivery.
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Flat Top Design – Compatible with all standard 21700 spring-contact chargers, flashlights, and battery holders. The flat positive surface ensures reliable spot-welding connections for pack builders.
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Massive Capacity Advantage – At 5000mAh, this cell provides significantly longer runtime than 4000-4500mAh high-drain alternatives, reducing the need for frequent battery swaps.
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6-Pack Bulk Value – Ideal quantity for building a 10S or 13S e-bike pack, rebuilding multiple tool batteries, or powering a fleet of high-drain devices.
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Molicel Genuine Quality – Manufactured to the strictest industry standards, trusted by professionals worldwide for consistent performance and uncompromising safety.
Parameters
| Parameter | Specification |
|---|---|
| Model | Molicel INR-21700-P50B |
| Typical Capacity | 5000 mAh (0.2C discharge to 2.5V) |
| Minimum Capacity | 4900 mAh |
| Nominal Voltage | 3.6 V (typical operating 3.7 V) |
| Max Continuous Discharge | 50 A (10C) (cell temperature ≤ 80°C) |
| Max Pulse Discharge | Up to 60 A+ (short burst, monitor temperature) |
| Discharge Cut-off Voltage | 2.5 V (do not over-discharge) |
| Standard Charge | CC-CV, 0.5C (2500 mA) to 4.2 V, cut-off 50 mA |
| Max Charge Current | 1C (5000 mA); 2C fast charge possible with strict temperature control |
| Internal Resistance (AC) | Approx. |
| 8 mΩ (AC 1 kHz) | Cycle Life | ≥ 300 cycles (to 80% capacity, 1C charge / 10A discharge) | Operating Temperature (Discharge) | -20°C to 60°C (ensure adequate cooling for sustained 50A) | Top Type | Flat Top | Dimensions | Approx. |
| 21.4 mm diameter × 70.2 mm length | Weight (single cell) | Approx. |
| 69 g | Package Includes | 6 × Molicel P50B 21700 cells in protective anti-static packaging |
Applications
Recommended For
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High-Performance E-Bike & E-Scooter Packs: The 50A continuous discharge supports powerful 750W-1500W motors, while the 5000mAh capacity significantly reduces the number of parallel cells needed in a pack. Ideal for 36V (10S), 48V (13S), and 52V (14S) configurations.
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Heavy-Duty Cordless Power Tools: Angle grinders, circular saws, high-torque impact wrenches, and rotary hammers that demand sustained 40-50A current. Rebuild your tool packs with superior runtime and power.
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Competition-Level Vaping: Mechanical mods and high-wattage regulated devices pushing builds down to 0.08Ω. The P50B delivers safe, sag-free power at 50A with the longest vaping sessions possible from a single cell.
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Extreme-Output 21700 Flashlights: FET-driven hot-rod lights and multi-emitter searchlights requiring sustained 30-45A. The 5000mAh capacity provides unprecedented turbo runtimes for search and rescue or cave exploration.
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Professional RC Racing: Cars, boats, and quadcopters that demand instantaneous 50A+ bursts and the longest possible race or practice sessions.
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Portable Spot Welders & High-Power DIY Projects: Build compact, high-energy battery packs for welders, inverters, or field power supplies.
Not Recommended For
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Low-Power Long-Runtime Devices: Solar lights, wireless sensors, or smart locks. The 50A capability is wasted; choose a lower-cost 5000mAh 10A 21700 cell.
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18650-Only Devices: This is a 21700 cell (21mm x 70mm). It will not physically fit in 18650 compartments. Verify your device's battery specifications before ordering.
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Standard 5V/2A USB Power Banks: The P50B's performance far exceeds the requirements of a basic power bank. Use a high-capacity, lower-drain cell for better economy.
FAQ
Q: What makes the P50B different from the P45B?
A: The P50B upgrades both capacity and current: 5000mAh vs 4500mAh, and 50A vs 45A continuous. Both share the same ultra-low ~8mΩ internal resistance. Choose the P50B if you need maximum runtime and the highest possible current. The P45B remains an excellent choice if you prioritize slightly lower cost with nearly identical power density.
Q: What does 10C mean, and how does it relate to 50A?
A: The "C" rating is a multiplier of the cell's capacity in ampere-hours. The P50B has a 5000mAh capacity (5.0Ah). 10C means 5.0Ah × 10 = 50A continuous discharge. This indicates the cell can safely deliver 50A of continuous current without overheating or dangerous voltage sag.
Q: Can I use this battery in my 18650 device?
A: No. The P50B is a 21700 cell, meaning it has a 21mm diameter and 70mm length. Standard 18650 cells are 18mm × 65mm. The P50B will not fit unless your device is explicitly designed to accept both 18650 and 21700 batteries. Always check your device manual.
Q: Is this a protected battery?
A: No, the Molicel P50B is an unprotected flat top cell. This is standard for high-drain applications to allow unrestricted current flow. Your device must have its own protection circuit for single-cell use. For multi-cell series or parallel packs, you must install an external BMS rated for at least 60A.
Q: Can I solder directly onto the battery terminals?
A: Absolutely not. Direct soldering exposes the cell to extreme heat that can damage internal separators, deform the safety vent, and potentially cause a thermal runaway. Always use a spot welder with nickel strips. For wire connections, use nickel tabs with pre-soldered leads that are spot-welded onto the cell.
Q: How should I store these cells long-term?
A: Store at 3.6-3.7V per cell (approximately 40-50% state of charge) in a cool, dry environment. Always use non-conductive battery cases to prevent accidental short circuits. Avoid storing cells fully charged or deeply discharged for extended periods, as this accelerates capacity degradation.
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.