4-Pack Vapcell P1054A 10440 540mAh 3.7V USB-C Rechargeable Battery Button Top – Built-in Charger for Mini Flashlights & Laser Pointers

Description

Never hunt for a specialty charger again. The Vapcell P1054A is a revolutionary 10440 battery with a built-in USB-C charging port, eliminating the need for any external charger. This 4-pack delivers a massive 540mAh capacity—nearly double that of standard 320mAh 10440 cells—with a stable 3.7V output and integrated overcharge, over-discharge, and short-circuit protection. The button top design ensures solid contact in compatible devices. Simply plug any USB-C cable directly into the battery to recharge from your phone charger, power bank, laptop, or car adapter. Critical Warnings: This is a 3.7V lithium-ion cell physically identical in size to a AAA battery—never use it in 1.5V AAA devices. The built-in USB-C port increases overall length to approximately 46–47mm; please verify your device's battery compartment can accommodate this before ordering. With Vapcell's trusted quality and the ultimate charging convenience, the P1054A keeps your mini flashlights, laser pointers, and micro tools ready to go wherever a USB-C cable is available.

Key Features

• Built-in USB-C Charging Port – No external charger required. Recharge directly from any standard USB-C cable connected to a wall adapter, power bank, laptop, or car charger. The built-in LED indicator glows red while charging and turns green when fully charged. Full charge in approximately 2–3 hours.

• 540mAh Maximum 10440 Capacity – The highest capacity available in the 10440 form factor. Delivers approximately 70% more runtime than standard 320mAh cells. Ideal for devices used frequently where extended runtime matters.

• Integrated Safety Protection – Built-in circuit guards against overcharge (4.2V cutoff), over-discharge (2.5V cutoff), short circuits, and overcurrent. Safe, worry-free operation for your valuable devices.

• Button Top Design – Features a raised positive terminal for reliable electrical contact in flashlights, laser pointers, and devices requiring a button top for proper connection or reverse-polarity protection.

• Ultra-Compact AAA-Sized Form Factor – Same diameter as a standard AAA battery (10mm). Important: The built-in USB-C port increases overall length to approximately 46–47mm—about 2–3mm longer than a standard 44mm AAA cell. Please verify your device can accommodate this extra length before ordering.

• Critical Voltage Warning – This is a 3.7V lithium-ion cell. Never use it in devices designed only for 1.5V AAA batteries—it will permanently damage the electronics. Only use in devices explicitly designed for 3.7V 10440 cells.

• 4-Pack Convenience – Perfect for powering multiple mini flashlights, keeping spares for your laser pointer and micro tools, or always having a charged cell ready.

Parameters

Applications

Recommended For

• Keychain & Mini LED Flashlights (3.7V 10440 Compatible): Enjoy significantly brighter output than standard AAA-powered lights, with the convenience of USB-C charging anywhere. The 540mAh capacity provides exceptional runtime for such a tiny cell.

• High-Power Laser Pointers & Presentation Tools: Clean, stable power for bright laser output. USB-C charging means no need to carry a separate charger when traveling.

• Precision Micro Tools & Electric Screwdrivers: Certain micro-precision tools use 10440 cells and benefit from the convenience of built-in charging.

• Compact Medical & Diagnostic Devices: Reliable power with integrated protection circuits for sensitive portable equipment.

• Travel & Everyday Carry: Minimize your gear—one USB-C cable charges your phone and your spare batteries.

Not Recommended For

• 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.

• Devices with Extremely Tight Battery Compartments: The built-in USB-C port increases length to approximately 46–47mm. Some devices with rigid battery slots designed only for standard 44mm AAA cells may not close properly. Always measure your device's battery compartment before ordering.

• High-Drain Devices (>2A Continuous): The built-in protection circuit limits maximum output current. For high-power applications, use unprotected high-drain cells in larger form factors.

• Standard NiMH/Alkaline AAA Chargers: Never place this battery in a conventional AAA charger. It is charged exclusively through its built-in USB-C port.

FAQ

Q: How do I charge this battery? Do I need a special charger?
A: No special charger required. Simply connect a standard USB-C cable to the port on the battery and plug the other end into any 5V USB power source—a phone charger, power bank, laptop, or car adapter. The built-in LED glows red during charging and turns green when fully charged. A full charge takes approximately 2–3 hours. Never place this battery in a conventional AAA charger.

Q: Will this battery fit my device? It says it's AAA-sized.
A: The diameter is identical to a standard AAA battery (10mm). However, the built-in USB-C charging port increases the overall length to approximately 46–47mm—about 2–3mm longer than a standard 44mm AAA cell. Most spring-loaded battery compartments can accommodate this extra length easily. However, devices with rigid, tight-fitting battery slots may have difficulty closing. Please measure your device's battery compartment depth before ordering.

Q: Is the 540mAh capacity real? How does it compare to other 10440 cells?
A: Yes, 540mAh is the typical capacity under standard test conditions. This is approximately 70% more capacity than standard 320mAh 10440 cells, making it the largest capacity available in the 10440 form factor. Combined with USB-C charging convenience, it provides both the longest runtime and the easiest recharging experience in this size category.

Q: Can I use this battery in my standard AAA flashlight?
A: No. This is a 3.7V lithium-ion cell. Standard AAA flashlights are designed for 1.5V alkaline or 1.2V NiMH batteries. Using a 3.7V cell will likely destroy the flashlight's LED or driver instantly. Only use this battery in devices explicitly labeled as supporting 3.7V 10440 lithium-ion cells.

Q: What is the maximum current this battery can deliver?
A: The built-in protection circuit limits the continuous discharge current to approximately 1–2A. This is sufficient for most mini flashlights, laser pointers, and micro tools designed for 10440 cells. It is not suitable for high-power applications such as vaping or FET-driven turbo flashlights that require 5A or more.

Q: Can I also charge this battery in a regular 10440 lithium-ion charger?
A: Yes. In addition to the built-in USB-C port, the P1054A can also be charged in most standard lithium-ion chargers that accept 10440 cells. However, due to the extra length, ensure your charger's bay can accommodate approximately 47mm. The built-in USB-C charging is the most convenient method.