Description
Unlock full power in your smallest devices with the Vapcell 10440 320mAh high-drain cell. This 4-pack delivers a true 3A continuous discharge at 3.7V, making it the go-to choice for keychain flashlights, high-power laser pointers, micro vaping pods, and precision mini tools. Available in flat top or button top options to match your device. Critical Warning: This is a 3.7V lithium-ion cell—physically identical in size to a standard AAA battery but operating at more than double the voltage. Never use it in devices designed only for 1.5V AAA batteries, as it will permanently damage the equipment. With Vapcell's trusted quality, this 4-pack provides explosive power in the most compact AAA-sized form factor.
Key Features
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3A Continuous Discharge (CDR) – Exceptional current output for a 10440 cell. Handles high-power LED turbo modes, laser diode pulses, and micro motor start-ups without dangerous voltage sag. Far outperforms standard 2A or unprotected low-drain 10440 cells.
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320mAh Solid Capacity – Among the highest capacity available in the 10440 form factor. Provides usable runtime in a tiny package, with approximately 20% more endurance than 200mAh–250mAh alternatives.
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Flat Top & Button Top Options – Choose flat top for devices with spring-loaded contacts or button top for devices requiring a raised positive terminal for proper electrical connection.
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Ultra-Compact AAA-Sized Form Factor – Same physical dimensions as a standard AAA battery (10mm x 44mm). Must only be used in devices explicitly designed for 3.7V 10440 lithium-ion cells.
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Low Internal Resistance – Minimizes heat generation and voltage drop under load, ensuring maximum power reaches your device.
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4-Pack Convenience – Perfect for powering a set of keychain flashlights, keeping spares for your laser pointer, or equipping multiple micro tools.
Parameters
Applications
Recommended For
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Keychain & Mini LED Flashlights (3.7V 10440 Compatible): Push tiny torches to their absolute limit. The 3A CDR delivers significantly brighter turbo modes, making these perfect for enthusiasts seeking maximum output from ultra-compact lights.
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High-Power Laser Pointers & Presentation Tools: High-power green or blue laser diodes require substantial current. These cells provide clean, stable power for bright, consistent output.
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Micro Vaping Pod Systems (Select Models): Some ultra-compact pod systems use 10440 cells. The 3A rating provides a safe operating margin.
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Precision Mini Tools & Electric Screwdrivers: Certain micro-precision screwdrivers and engraving pens use 10440 cells and benefit from the high current capability.
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Compact Medical & Diagnostic Devices: Small portable tools that require 3.7V power in a AAA-sized form factor.
Not Recommended For
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Standard 1.5V AAA Devices: This is a 3.7V lithium-ion cell—using it in devices designed only for 1.5V AAA batteries will permanently destroy the electronics. Always verify your device explicitly supports 3.7V 10440 lithium-ion cells before use.
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Long-Runtime Low-Power Devices: With 320mAh capacity, devices like remote controls and basic sensors are better served by higher-capacity NiMH AAA or 14500 cells.
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High-Drain Applications (>3A Continuous): For sustained currents above 3A, use a larger form factor cell such as a high-drain 14500 or 18650.
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18650 or 14500 Devices: The 10440 format is physically smaller (10mm vs. 14mm/18mm) and will not make proper contact in larger battery compartments.
FAQ
Q: Is this battery the same size as a regular AAA battery? Can I use it in my standard AAA flashlight?
A: Yes, this cell has the exact same physical dimensions as a standard AAA battery (10mm x 44mm). However, it operates at 3.7V, which is more than double the voltage of a 1.5V AAA alkaline battery. You must only use this cell in devices explicitly labeled as supporting 3.7V 10400 lithium-ion cells. Using it in a standard AAA device will likely destroy the electronics instantly.
Q: Why is the capacity only 320mAh? Other 10440 cells have even less, but that still seems small.
A: The 10440 form factor is physically tiny—roughly one-third the volume of an 18650. 320mAh is actually among the highest capacities available in this size while still supporting a strong 3A CDR. For applications that need more runtime, consider a 14500 (AA-sized) or 18650 cell if your device supports it.
Q: Can I use this battery for vaping?
A: Only for specifically designed ultra-compact pod systems that explicitly support 10440 cells. With a 3A CDR at 3.6V nominal, it can safely power builds above approximately 1.2Ω. Most standard vaping devices require larger cells (18650) and higher currents. Always calculate your actual current using Ohm's law and never exceed 3A continuous.
Q: What is the difference between flat top and button top? Which should I choose?
A: Flat top cells have a completely flat positive terminal, ideal for devices with spring-loaded contacts. Button top cells have a raised positive nipple, required by some devices for proper electrical contact or reverse-polarity protection. Check your device's battery compartment or manual for the correct type.
Q: Can I charge this with a standard AAA charger?
A: No. You must use a lithium-ion charger designed for 3.7V cells. Standard NiMH or alkaline chargers will not charge this cell correctly and could create a safety hazard. Always use a charger with a CC-CV algorithm and proper voltage cutoff (4.2V).
Q: How should I store these cells when not in use?
A: Store at 3.6–3.7V (approximately 40–50% charge) in a cool, dry place. Use non-conductive battery cases to prevent accidental short circuits. Avoid storing fully charged or deeply discharged for extended periods.
