Product Description:
The ICR10440 is a compact 3.7V lithium-ion battery engineered for reliable power in a miniature 10mm x 44mm form factor. This 2pcs bundle delivers a true 350mAh capacity and a stable 3.7V output (4.2V max), making it the ideal power source for mini tactical flashlights, keychain lights, and other compact EDC devices.
Important Safety & Usage Warning:
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Voltage Warning: While this battery shares a similar physical size to a standard AAA battery, it operates at 3.7V — significantly higher than 1.2V/1.5V standard batteries. Do NOT use it in devices designed for standard AA/AAA batteries. It is strictly for devices explicitly designed for 10440 or 3.7V power.
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Protection Warning: This battery is a bare cell without a built-in protection board. Please take extra care to avoid over-discharging or over-charging, as this may damage the battery. We recommend using a smart charger with over-charge protection.
Key Features:
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2pcs ICR10440 Premium Li-ion Cells: High-quality flat top Li-ion batteries.
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350mAh True Capacity: Provides genuine, non-inflated 350mAh capacity for extended runtimes.
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Stable 3.7V Output: Delivers consistent power with a full charge voltage of 4.2V.
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Compact 10440 Size: Tiny 10mm diameter x 44mm height, perfect for space-constrained devices.
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Flat Top Design: Standard flat positive terminal for recessed battery compartments.
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High Energy Density: Packing 350mAh into a miniature form factor.
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Note: This is a bare cell without a built-in protection board. Please use a smart charger with over-charge protection.
Product Parameters:
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Model: ICR10440
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Size: 10440
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Capacity: 350mAh
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Nominal Voltage: 3.7V
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Full Charge Voltage: 4.2V
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Chemistry: Li-ion (Lithium Ion)
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Top Type: Flat Top
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Dimensions: 10mm (Diameter) x 44mm (Height)
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Protection: No built-in protection board
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Pack Quantity: 2pcs
Applications:
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Mini Tactical Flashlights: Powers compact high-lumen flashlights and keychain lights.
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EDC & Everyday Gear: Ideal power source for everyday carry mini electronics.
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Miniature Sensors & Gadgets: Suitable for small smart sensors, alarms, and portable gadgets.
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DIY Micro Electronics: Perfect for custom miniature electronic projects.
Frequently Asked Questions (FAQ):
Q1: Can I use this battery as a replacement for a standard AAA battery?
A1: NO. While the physical size is identical to an AAA battery, the voltage is 3.7V, which is significantly higher than 1.2V/1.5V batteries. Using this battery in a standard AAA device will instantly damage your device. It is ONLY compatible with devices specifically designed for 10440 or 3.7V power.
Q2: Does this battery have a built-in protection board?
A2: No. This is a bare cell without a built-in protection board. Please take extra care to avoid over-discharging or over-charging. We recommend using a smart charger with over-charge protection to ensure safety.
Q3: What is the difference between this Flat Top and a Button Top?
A3: This is a Flat Top battery with a flat positive terminal measuring 44mm in height. A Button Top version (with a protruding positive terminal) would measure 46mm in height. Please choose the correct type for your device's battery compartment.
Q4: What kind of charger should I use for this battery?
A4: You must use a charger specifically designed for 3.6V/3.7V Li-ion batteries with a 4.2V cut-off voltage. Do not use a standard AAA Ni-MH charger. A smart charger with over-charge protection is highly recommended.
Q5: Is this battery suitable for high-drain devices?
A5: This battery is designed for medium-to-high drain compact devices such as mini flashlights and EDC gear. For extremely high-current devices, please check your device's amp requirements.
