Keeppower 18500 3.7V 2600mAh Protected Li-ion Battery (2-Pack) - P1850C4 High Capacity 2C Rechargeable Cell for Flashlights & Tactical Gear
Description
Product Description:
Upgrade your high-performance flashlights and tactical gear with the ultimate power solution – the Keeppower 18500 3.7V 2600mAh Protected Li-ion Battery (1-Pack). Featuring an incredibly high capacity of 2600mAh and a built-in Protection Circuit Board (PCB), this premium battery delivers maximum runtime and absolute safety for your most demanding devices.
The built-in PCB ensures total protection against over-charging, over-discharging, and short circuits. It also supports a reliable 2C discharge rate, providing stable power for high-lumen tactical flashlights, scopes, and portable optics.
CRITICAL SIZE & APPLICATION WARNING:
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Size Alert: This is a Protected 18500 battery. Due to the built-in Protection Circuit Board (PCB), its actual physical dimensions are 18.5mm (Diameter) x 53mm (Height). This is 3mm longer and 0.5mm thicker than standard unprotected 18500 batteries (50mm x 18mm). Please measure your device's internal battery compartment carefully BEFORE ordering to ensure it can accommodate the 53mm length and 18.5mm diameter.
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Application Note: This battery is designed for Flashlights, Optics, and Tactical Gear. It is NOT recommended for electric hair clippers, trimmers, or small home appliances, as the specific length constraints of those devices almost always prevent a proper fit.
Key Features:
Massive 2600mAh High Capacity: Delivers exceptional runtime, allowing your tactical lights and devices to perform longer than ever before.
Built-in PCB Protection: Integrated smart circuit prevents over-charging, over-discharging, and short circuits, ensuring complete safety during use.
Reliable 2C Discharge Rate: Provides stable power output suitable for high-performance flashlights and electronic devices.
Genuine Keeppower Quality (P1850C4): A trusted brand with reliable ICR18500 cells and rigorous manufacturing standards.
Single Battery Replacement: Perfect for replacing a single worn-out battery in your tactical gear without having to buy a whole pair.
Parameters:
| Parameter | Specification |
|---|---|
| Brand / Model | Keeppower / P1850C4 |
| Battery Size / Type | 18500 (Protected Cylindrical Li-ion) |
| Cell Type | ICR18500 |
| Capacity | 2600mAh (Minimum: 2550mAh) |
| Nominal Voltage | 3.7V (Max Charge: 4.2V) |
| Discharge Rate | 2C Max |
| Built-in Protection | Yes (PCB - Over-charge, Over-discharge, Short-circuit) |
| Terminal Type | Button Top (+) |
| Actual Dimensions | 18.5mm (Diameter) x 53mm (Height) |
| Rechargeable Cycles | 300+ cycles |
Applications:
High-Lumen Tactical Flashlights & EDC Torches
Night Vision Scopes, Rangefinders & Laser Sights
Outdoor Emergency & Searchlights
Portable Electronics requiring high capacity and protection
High-Drain DIY Electronics
FAQ:
Q: Why is this battery 53mm tall instead of the standard 50mm?
A: This is a Protected battery. The extra 3mm comes from the built-in Protection Circuit Board (PCB) integrated into the cell, which provides crucial safety against overcharging and short circuits.
Q: Will this battery fit in my hair clipper?
A: Probably NOT. Due to the 53mm length and 18.5mm diameter, this battery is specifically designed for flashlights and tactical gear. We generally do not recommend it for hair clippers or small appliances, as they usually have very tight internal compartments.
Q: What is the advantage of a protected battery over a bare cell?
A: A protected battery has an integrated smart PCB that automatically cuts off the power if it detects over-charging, over-discharging, or a short circuit. This provides an extra layer of safety, especially in devices that lack their own protection circuits.
Q: Can I charge this battery with a standard Li-ion charger?
A: Yes. You can use a standard 3.7V/4.2V Li-ion charger. However, because it is a protected battery, it will have a slightly longer length, so make sure your charger's slot can accommodate 53mm.
Q: How long does it take to fully charge this battery?
A: With a standard 500mA smart charger, it will take approximately 5 to 6 hours to fully charge a 2600mAh battery. Using a 1A charger will reduce this time to about 3 hours.
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.