NITECORE NL1834R-C 18650 Battery - 3400mAh 3.6V 5A High-Drain Rechargeable Li-ion Cell with Built-in Type-C Direct Charging Port, No Charger Required & 500 Cycle Life for Flashlights & Outdoor Gear
Description
【Product Description】
Power your gear without the hassle of a separate charger! The NITECORE NL1834R-C is a revolutionary 18650 rechargeable Li-ion battery featuring a built-in USB Type-C charging port. No external charger needed—simply plug a standard USB-C cable directly into the battery’s positive terminal and it’s ready to charge, anywhere, anytime.
But that’s not all. The NL1834R-C delivers a massive 3400mAh capacity and a reliable 5A continuous discharge, making it the perfect all-rounder for high-lumen flashlights, outdoor survival gear, and everyday electronics.
The battery features a robust dual-layer protection system: a built-in high-performance protection board with premium MOSFETs to prevent overcharging, over-discharging, and short circuits, plus a pressure safety valve for absolute peace of mind. Its fully metal outer shell with stainless steel nickel-plated protective plates ensures durability and impact resistance.
With a lifespan of over 500 charge cycles and 100% mercury/lead/cadmium-free materials, the NITECORE NL1834R-C is a safe, eco-friendly, and incredibly convenient upgrade for your power needs.
( IMPORTANT: This battery includes the battery and a USB-C cable. The wall adapter is sold separately or included depending on the variant you choose.)
【Key Features】
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Built-in Type-C Charging Port: The standout feature! No external battery charger required. Simply plug a standard USB-C cable directly into the top of the battery to charge on the go.
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Massive 3400mAh Capacity: Delivers extended runtimes for your most demanding devices, with a rated energy of 12.58Wh.
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Reliable 5A Continuous Discharge: Provides stable and safe power for high-lumen flashlights, EDC gear, and outdoor devices.
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Dual Charging Options: Charge directly via the built-in Type-C port, or insert it into a standard NITECORE smart charger for traditional charging.
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Dual-Layer Safety Protection: Built-in high-performance protection circuit (MOSFETs) against overcharge, over-discharge, and short circuits, plus a pressure safety valve for added security.
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Durable Metal Shell & Stainless Steel Plates: Fully metal outer housing and nickel-plated stainless steel plates at both ends resist impacts, oxidation, and corrosion.
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Green & Eco-Friendly with 500+ Cycle Life: Completely free of mercury, lead, and cadmium. Rechargeable over 500 times, saving money and reducing battery waste.
【Parameters & Specifications】
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Brand: NITECORE
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Model: NL1834R-C
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Battery Size: 18650
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Nominal Capacity: 3400mAh
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Nominal Voltage: 3.6V (12.58Wh)
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Max Continuous Discharge Current: 5A
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Charging Input: USB-C (5V/1A)
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Charge Cut-off Voltage: 4.2V
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Cycle Life: 500+ cycles
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Terminal Type: Button Top (with built-in protection board and Type-C port)
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Dimensions: 18.5mm (Dia) × 71.0mm (Height) ± 0.3mm
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Weight: Approx. 50g
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Warranty: 12-Month Free Warranty
【Applications】
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EDC & Everyday Carry: The perfect “plug-and-play” battery for EDC flashlights and portable devices.
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Outdoor & Camping: Charge your batteries using a solar panel or power bank on long trips.
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Emergency Preparedness: Essential backup power source for emergency lights and weather radios.
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High-Lumen Flashlights: Powers high-intensity tactical flashlights and searchlights.
【Frequently Asked Questions (FAQ)】
Q1: Does this battery really require no external charger?
A1: Yes! The NL1834R-C features a built-in USB Type-C port at the positive terminal. You can charge it directly by plugging in any standard USB-C cable (connected to a wall adapter, power bank, or laptop). A USB-C cable is included in the package.
Q2: How do I know when the battery is fully charged?
A2: There are built-in indicator lights on the battery. When charging, the red light stays on. Once it is fully charged, the light turns green. You can unplug the cable whenever you want.
Q3: Can I also charge this battery with a regular NITECORE charger?
A3: Absolutely! The NL1834R-C is a standard 18650 battery. You can insert it into any NITECORE smart charger (like the UM4 or UMS4) to charge it traditionally. You have two convenient options!
Q4: Why is the battery 71mm long instead of the typical 65.2mm?
A4: The battery features a built-in protection board AND a Type-C charging port at the top, which adds extra length (71mm). Please carefully measure your device's battery bay depth before purchase to ensure it fits!
Q5: Are these batteries safe?
A5: Yes. They feature a dual-layer protection design, including a high-performance protection board and a pressure safety valve. Additionally, they are completely free of mercury, lead, and cadmium, making them safe and eco-friendly.
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.
