Product Description:
The ICR10440 is a compact 3.7V lithium-ion battery engineered for high energy density in a tiny 10mm x 44mm form factor. This 2pcs bundle delivers a reliable 350mAh capacity and a stable 3.7V output, making it the ideal power solution for mini tactical flashlights, keychain lights, small electronic cigarettes, and other compact EDC devices.
Important Safety Warning: While this battery shares a similar physical size to a standard AAA battery, it operates at 3.7V — significantly higher than the 1.2V/1.5V of 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.
To suit your specific device requirements, we offer 2 top-terminal variants:
-
Flat Top (2pcs): Height 44mm. Standard flat positive terminal.
-
Button Top (2pcs): Height 46mm. Protruding positive terminal for recessed battery compartments.
Key Features:
-
2pcs ICR10440 Premium Li-ion Cells: High-quality Li-ion batteries from a trusted manufacturer.
-
350mAh True Capacity: Provides reliable energy for extended runtimes in compact devices.
-
Stable 3.7V Output: Delivers consistent power for high-performance mini electronics.
-
Compact 10440 Size: Tiny 10mm diameter x 44mm/46mm height, perfect for space-constrained devices.
-
Versatile Top Options: Choose from Flat Top or Button Top to match your device's contact requirements.
-
High Energy Density: Packing 350mAh into a miniature form factor.
-
Note: This product is a bare cell. A compatible 3.7V Li-ion charger is required (not included).
Product Parameters:
-
Model: ICR10440
-
Size: 10440
-
Capacity: 350mAh
-
Nominal Voltage: 3.7V
-
Chemistry: Li-ion (Lithium Ion)
-
Top Type: Flat Top (44mm) / Button Top (46mm)
-
Dimensions: 10mm (Diameter) x 44mm (Flat) / 46mm (Button)
-
Pack Quantity: 2pcs
Applications:
-
Mini Tactical Flashlights: Powers compact high-lumen flashlights and keychain lights.
-
EDC & Everyday Gear: Ideal power source for everyday carry mini electronics.
-
Miniature Sensors & Gadgets: Suitable for small smart sensors, alarms, and portable gadgets.
-
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 similar 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: What is the difference between the Flat Top and Button Top?
A2: The Flat Top measures 44mm in height. The Button Top features a protruding positive terminal and measures 46mm in height. Choose the Button Top if your device requires a raised contact point.
Q3: What kind of charger should I use for this battery?
A3: 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.
Q4: Is this battery suitable for high-drain devices?
A4: 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.
Q5: Can I use this battery with a protection board?
A5: This is a bare cell without a built-in protection board. If your device does not have its own protection circuit, we recommend using a charger with over-charge protection.
