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Spare 10440 Cell Battery
10440 Lithium-Ion 3.7V 350mAh Rechargeable Battery
Compact Power for High-Output Devices. Built for the Serious User.
Designed for High-Performance Flashlights
The 10440 Lithium-Ion 3.7V 350mAh Battery is built for users who require more than what a standard AAA can deliver. With 3.7V output and 350mAh capacity, it powers select high-lumen tools—like the ReyLight Copper AAA/10440 flashlight—with increased brightness and extended runtime.
This cell is not for casual use. It’s engineered for compatibility with smart, BMS-equipped devices that are designed to handle higher voltage. When used correctly, it offers repeatable, reliable performance for tactical lighting, EDC kits, and professional loadouts.
Why Choose This Battery
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High Output Performance – 3.7V power increases brightness for compatible lights
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Rechargeable Efficiency – Up to 2000 cycles with proper charging care
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Compact Energy – AAA-sized cell fits select high-performance lights
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Trusted by Enthusiasts & Pros – Preferred by flashlight builders and EDC users who know their gear
Specifications
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Model: 10440 ICR Lithium-Ion
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Voltage: 3.7V
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Capacity: 350mAh
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Size: Diameter 0.41 in, Height 1.75 in
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Max Charge Voltage: 4.2V
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Recommended Charge Rate: 0.5A–1A
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Cycle Life: Up to 2000 cycles (with proper care)
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Packaging: Ships via ground only (Lithium hazmat compliance)
Critical Usage Warning – Read Before Purchase
This battery is NOT compatible with standard AAA flashlights.
Attempting to use it in 1.5V devices will destroy your gear and void warranties.
Safe Handling Guidelines
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Use only in devices designed for 3.7V 10440 lithium-ion cells
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Charge only with verified 10440-compatible lithium-ion chargers
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Do NOT store loose—always use a protective battery case
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Avoid contact with water, heat, or metal objects
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Do not use damaged batteries (torn wraps, dents, or exposed insulators)
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Never overcharge above 4.2V or discharge below 3.0V
Liability Statement
By purchasing this battery, you accept full responsibility for proper handling, usage, and storage. Misuse of lithium-ion batteries can result in fire, injury, or worse. This battery is for experienced users only.
High-performance gear requires high-performance power—and this cell delivers, when used with intent and responsibility.
Add it to your kit only if you know what you're doing.
Product information
Stay Ready Outdoors — Return & Refund Policy
Last Updated: April 22, 2025
At Stay Ready Outdoors, we stand behind the quality of our products and want you to be completely satisfied with your purchase. If you need to return an item, please review our policy below.
Returns
We offer a 30-day return policy, meaning you have 30 days from the date you receive your item to request a return.
Return Eligibility
To qualify for a return, your item must:
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Be unworn or unused, with original tags intact
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Be in its original packaging, including all accessories
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Include proof of purchase (receipt or order number)
How to Start a Return
To initiate a return, email us at crquarto@stayreadyoutdoors.com with your order details. Once approved, you’ll receive return instructions and a prepaid shipping label.
Important: Items sent back without prior approval will not be accepted.
Return Address:
Stay Ready Outdoors
ATTN: Returns
15236 Las Flores Ave
La Mirada, CA 90638
Damaged, Defective, or Incorrect Items
Please inspect your order upon arrival. If your item is damaged, defective, or incorrect, contact us at crquarto@stayreadyoutdoors.com within 7 days so we can evaluate and resolve the issue promptly.
Non-Returnable Items & Exceptions
Some items are non-returnable, including:
❌ Engraved or customized items
❌ Perishable goods (e.g., food)
❌ Personal care items (e.g., hygiene or beauty products)
❌ Hazardous materials (e.g., flammable liquids or gases)
❌ Gift cards and final sale items
Clothing must be unworn and include original tags.
Augason Farms Products – All Sales Final
Due to the nature of long-term food storage, all sales on Augason Farms products are final.
We do not accept returns or exchanges on Augason Farms products for any reason including:
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Incorrect order
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Change of mind
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Shipping delays
Replacements will only be issued in the event of:
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A verified manufacturing defect, or
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Shipping damage, which must be reported within 5 days of delivery with supporting photo documentation
Please email crquarto@stayreadyoutdoors.com immediately if you believe your product is defective or was damaged in transit.
Pre-Orders
As of 02/07/2025, we no longer offer refunds on pre-orders.
Pre-orders placed before this date are eligible for refunds under this policy.
If you’re unsure whether your item qualifies for a return, email us before sending it back.
Exchanges
The fastest way to exchange an item is to initiate a return and, once accepted, place a new order for the item you want.
European Union Customers – 14-Day Cooling-Off Period
If your order was shipped to the European Union, you have the right to cancel or return it within 14 days of delivery, for any reason.
To be eligible:
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Items must be unused, with original tags and packaging
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Must include proof of purchase
Refunds
Once we receive and inspect your return, we will notify you of approval. If approved, we will issue a refund to your original payment method within 10 business days.
Please Note:
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It may take additional time for your bank or credit card company to process the refund.
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If you haven’t received your refund within 15 business days of approval, contact us at crquarto@stayreadyoutdoors.com.
Need Help?
If you have any questions about your return or refund, we’re here to help:
📧 Email: crquarto@stayreadyoutdoors.com