18500 3.7V 4000mAh 2P Rechargeable Battery Pack with Wires - 12A High-Drain Li-ion for Portable Blenders, Juicers & Small Appliances
Description
Upgrade or repair your portable appliances with the powerful and ready-to-install 18500 3.7V 4000mAh 2P Rechargeable Battery Pack with Wires. This high-capacity battery assembly combines two premium 18500 3C high-drain cells in a parallel configuration (2P), delivering an impressive 4000mAh capacity and a robust 12A continuous discharge current.
Specifically designed for heavy-duty portable devices, this pre-wired battery pack is the ultimate drop-in replacement for broken or worn-out batteries in portable blenders, juicers, vacuum sealers, and other small home appliances. It comes with pre-soldered connection wires, saving you the trouble of complicated spot welding and making your DIY repair project simple and straightforward.
Critical Size and Polarity Warnings
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Size Alert: This is a pre-assembled 2-cell parallel battery pack. The physical dimensions are 36mm (Width) x 52mm (Height). Please measure your device's internal battery compartment to ensure it can accommodate the 36mm width before purchasing.
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Polarity Alert: This battery pack comes with pre-wired connection cables (+ and -). Please verify the polarity of your original device's circuit board before soldering the wires. Connecting reverse polarity will permanently damage your device.
Key Features
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Massive 4000mAh Capacity (2P Configuration): Two 2000mAh cells connected in parallel double the total capacity, providing long-lasting power for high-consumption appliances.
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12A High-Drain Performance: The combined 3C discharge rate of the two cells delivers a stable 12A continuous current, ensuring your blender motor or vacuum runs at peak power.
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Pre-Wired and Ready to Install: Comes with pre-soldered wires, eliminating the need for complex spot welding. Simply connect the leads to your device's PCB.
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High-Quality 18500 Cells: Built with premium lithium-ion chemistry, low internal resistance (≤25mΩ), and 500+ recharge cycles for excellent longevity.
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Perfect for Appliance Repairs: An ideal replacement battery pack for portable blenders, juicers, and small cordless home tools.
Technical Parameters
| Parameter | Specification |
|---|---|
| Battery Configuration | 2P (Two 18500 Cells Connected in Parallel) |
| Capacity | 4000mAh (Total) |
| Nominal Voltage | 3.7V (Full Charge: 4.2V) |
| Total Continuous Discharge Current | 12A (Derived from 3C × 4A) |
| Cell Type | 18500 High-Drain 3C Li-ion |
| Pre-Wired Output | Yes (Two Wires: Positive and Negative) |
| Dimensions | 36mm (Width) x 52mm (Height) |
| Rechargeable Cycles | 500+ cycles |
| Internal Resistance (Cell) | ≤25mΩ |
Applications
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Portable Blenders and Smoothie Makers (Juicing cups)
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Handheld Vacuum Sealers and Cordless Vacuum Cleaners
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Small Kitchen Appliances
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Portable Power Tools and Gadgets
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DIY Battery Replacement and Electronics Repair
FAQ
Q: What does "2P" or "Parallel" mean in this battery pack?
A: 2P means two batteries are connected side-by-side in a parallel circuit. This keeps the voltage at 3.7V but doubles the total capacity to 4000mAh and doubles the discharge current to 12A, providing much longer runtime for your blender.
Q: Is this battery pack ready to install out of the box?
A: Yes. The battery pack comes pre-assembled and pre-wired with soldered leads. You do not need a spot welder. However, you will need a soldering iron to attach the wires to your device's internal motherboard.
Q: Will this fit my blender? What if my device uses a different battery size?
A: This pack is 36mm wide, which is roughly the width of two 18500 cells side-by-side. It is NOT suitable for standard flashlight slots. Please remove your old battery pack, measure its width and height, and compare it to our dimensions before ordering.
Q: How do I know which wire is positive (+) and which is negative (-)?
A: The wires are clearly labeled or color-coded (usually Red for positive, Black for negative). Please check the polarity markings on your device's circuit board before soldering to avoid reverse polarity damage.
Q: Can I use this battery pack to replace a 7.4V (2S) battery in my device?
A: No. This is a 3.7V parallel battery pack. If your original battery was a 7.4V (2S) pack, this lower voltage will not power your device and may trigger low-voltage protection. Please check your original battery's voltage carefully before buying.
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.