GPHN IFR21700-3000 3.2V 3000mAh 3C LiFePO4 Battery – 9A High-Discharge for E-Bikes & Power Stations (2-Pack)
Description
Product Description:
The GPHN IFR21700-3000 is a premium-grade 21700 lithium iron phosphate (LiFePO4) battery engineered for reliable power delivery and long cycle life. This 2-Pack bundle delivers a stable 3000mAh (3.0Ah) capacity, 9.6Wh of energy, and a 3C (9A) continuous discharge current. With the standard 21700 form factor, it is the ideal core cell for e-bike conversions, portable power stations, DIY energy storage, and a wide range of everyday devices.
Built with advanced LiFePO4 chemistry, this battery offers superior thermal stability, an ultra-long cycle life, and enhanced safety against overcharging and short circuits. Its 3.2V nominal voltage makes it a perfect drop-in replacement for 12V lead-acid battery systems when used in a 4S configuration.
Key Features:
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GPHN IFR21700-3000 Premium LiFePO4 Cell: High-quality 21700 battery from the trusted brand GPHN (Peng Hui).
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3000mAh / 9.6Wh Capacity: Provides reliable energy for extended runtimes.
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3C (9A) Continuous Discharge: Delivers stable 9A output, suitable for medium-power applications.
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Advanced LiFePO4 Safety Chemistry: Superior thermal stability, explosion-proof design, and enhanced protection against overcharging and short circuits.
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Ultra-Long Cycle Life: LiFePO4 chemistry ensures an exceptionally long service life, far exceeding standard lithium-ion batteries.
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Standard 21700 Size: Perfectly fits standard 21700 battery compartments (21mm x 70mm).
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Versatile Applications: Ideal for e-bikes, portable power stations, solar lighting, and DIY battery projects.
Product Parameters:
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Brand: GPHN
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Model: IFR21700-3000
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Size: 21700
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Capacity: 3000mAh / 3.0Ah
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Energy: 9.6Wh
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Nominal Voltage: 3.2V
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Full Charge Voltage: 3.65V
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Chemistry: LiFePO4 (Lithium Iron Phosphate)
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Discharge Rate: 3C
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Continuous Discharge Current: 9A
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Dimensions: 21mm (Diameter) x 70mm (Height)
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Pack Quantity: 2-Pack
Applications:
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Electric Bicycle & Scooter Conversions: Reliable power source for retrofitting e-bikes and electric scooters.
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Portable Power Stations & Energy Storage: Ideal core cell for building small portable power stations and DIY energy storage systems.
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Solar Garden Lights: Reliable, long-lasting power for outdoor solar lighting and pathway lights.
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Small Cordless Power Tools: Provides stable power for compact drills, screwdrivers, and other DIY tools.
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DIY Battery Packs: Perfect for building custom 12.8V battery packs (4S configuration) for hobby and home projects.
Frequently Asked Questions (FAQ):
Q1: What is the discharge current of this battery?
A1: This GPHN 21700 is rated for a 3C continuous discharge, which translates to a stable 9A discharge current. This makes it suitable for e-bikes, portable power stations, and small power tools.
Q2: What is the advantage of LiFePO4 chemistry?
A2: LiFePO4 (Lithium Iron Phosphate) offers superior thermal stability, a much longer cycle life, and enhanced safety compared to standard lithium-ion batteries. It is much less prone to overheating, explosion, or fire.
Q3: Is this battery safe for e-bike conversions?
A3: Absolutely. With its 3C (9A) discharge rate and 3000mAh capacity, this cell provides stable, reliable power for small e-bike conversions. Always ensure your BMS (Battery Management System) is properly configured for 3.2V LiFePO4 cells.
Q4: How can I build a 12V battery pack with these cells?
A4: For a standard 12.8V system, you would connect 4 of these 3.2V cells in series (4S). Always use a BMS when building custom packs to ensure safety and balance.
Q5: What kind of charger should I use for this battery?
A5: You must use a charger specifically designed for 3.2V LiFePO4 batteries with a 3.65V cut-off voltage. Do not use a standard 3.7V/4.2V Li-ion charger.
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
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Security

Built an emergency power pack. Sat for 2 months. Still at full charge. Ready when needed.
Evaluated these before a larger build. Quality convinced me. Ordering 30 more for my powerwall.
Second order of these cells. Same reliable performance. Good quality control from GPHN.
3C rate from a 3000mAh LiFePO4 cell. GPHN delivers. Built an e-bike pack that handles hills well.
3.27V on both cells. Factory fresh. Properly packaged with protective foam.
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.
