Delipow D Size 3500mAh 1.2V Ni-MH Rechargeable Battery – Ultra-Low Self-Discharge 1200 Cycles for Gas Stoves, Flashlights & Boilers (4-Pack)
Description
Product Description:
Heavy-Duty Power for Your Large Devices: Meet the Delipow D Size (1号) 3500mAh 1.2V Ni-MH rechargeable battery. Specifically designed to power large household and outdoor devices, this high-capacity battery delivers reliable, long-lasting energy exactly where you need it most.
Unrivaled Long-Term Storage & Savings: Engineered with advanced low self-discharge technology, this battery retains up to 90% of its charge after six months, 80% after one year, and an incredible 70% even after three years of storage. Supporting up to 1200 recharge cycles, one single D-size battery replaces 1200 disposable dry cells, saving you significant money and reducing environmental waste.
Zero Memory Effect & Ready to Use: Featuring zero memory effect, you can recharge it at any time without worrying about capacity loss. Plus, every battery is pre-charged to 80% capacity at the factory, so you can install it in your device immediately upon arrival.
Key Features:
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High-Capacity 3500mAh D Size Battery: Provides massive energy for demanding large devices such as gas stoves, high-power flashlights, and water heaters. Comes in a 4-Pack.
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1200 Ultra-Long Recharge Cycles: One battery can be reused up to 1200 times, effectively replacing 1200 single-use batteries, making it extremely economical and eco-friendly.
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Advanced Low Self-Discharge Technology: Retains 90% charge after 6 months, 80% after 1 year, and an impressive 70% after 3 years of storage. Long-term reliability guaranteed.
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No Memory Effect: Allows for convenient, worry-free charging at any time without reducing the battery's overall lifespan or capacity.
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Pre-Charged & Ready to Use: Each battery comes from the factory pre-charged to 80% capacity, ensuring it's ready to power your devices straight out of the box.
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Wide Application Range: Specifically designed to power large electronics, including gas stoves, portable boilers, emergency flashlights, and heavy-duty radios.
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Standard 1.2V D Size Voltage: Provides a stable 1.2V output, perfectly compatible with standard D-size/1号 battery powered devices. (Please confirm your device's battery size before ordering; this is much larger than AA/AAA batteries).
Product Parameters:
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Brand: Delipow
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Size: D Size
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Type: Ni-MH (Nickel-Metal Hydride) Rechargeable Battery
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Capacity: 3500mAh
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Nominal Voltage: 1.2V
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Cycle Life: Up to 1200 times
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Self-Discharge Rate: 90% after 6 months / 80% after 1 year / 70% after 3 years of storage
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Pre-Charged Status: Factory pre-charged to 80% capacity (Ready to use immediately)
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Dimensions: 32mm (Diameter) x 61mm (Height) / 1.26in x 2.4in
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Pack Quantity: 4-Pack
Applications:
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Home Kitchen & Appliances: Reliable power for gas stove igniters, water heater pilot lights, and continuous-use kitchen gadgets.
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Outdoor Adventure & Emergency Gear: Powers high-lumen, heavy-duty LED flashlights, searchlights, and portable camping radios used for extended outdoor trips.
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Industrial & Maintenance Tools: Provides long-lasting power for portable signal lights, heavy-duty diagnostic meters, and construction site tools.
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Large Musical Instruments & Portable Boomboxes: Supplies stable energy for large portable speakers, boomboxes, and portable amplifiers used at parties and events.
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Children's Heavy-Duty Toys: Drives large motorized ride-on toys, oversized RC cars, and robotic toys that require the larger D-size battery format.
Frequently Asked Questions (FAQ):
Q1: What is the difference between a D Size battery and an AA/AAA battery?
A1: A D Size battery is much larger. It measures approximately 32mm (1.26in) in diameter and 61mm (2.4in) in height. It is not interchangeable with AA or AAA batteries. Please check your device's battery compartment carefully before ordering to ensure it requires D Size batteries.
Q2: Can I leave this battery unused for a long time without losing power?
A2: Absolutely. Thanks to its advanced low self-discharge technology, it retains 70% of its charge even after 3 years of storage. It's perfect for emergency preparedness and backup power.
Q3: Do I have to fully drain this battery before charging it?
A3: No. It features zero memory effect, meaning you can charge it whenever you want without damaging the battery's capacity or lifespan.
Q4: How long does it take to fully charge this 3500mAh battery?
A4: Charging time depends on your charger's output current. Using a standard D-size smart charger, it typically takes several hours. We recommend using a charger specifically designed for large Ni-MH batteries to ensure safety and efficiency.
Q5: Is this battery ready to use right out of the box?
A5: Yes. It is pre-charged to 80% capacity at the factory. You can install it in your device immediately, though we recommend a full initial charge for optimal long-term performance.
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.
