3.7V to 9V/5V 18650 Lithium Battery Charge Discharge Integrated Module
3.7V to 9V/5V 18650 Lithium Battery Charge Discharge Integrated Module ₦ 1,500
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4-AA Battery Case Holder
4-AA Battery Case Holder ₦ 1,500
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USB 3V to 5V Booster Module

₦ 1,500

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Description
The USB 3V to 5V booster module is a compact electronic circuit that uses a boost converter to step up a low-voltage DC input (such as 3V from batteries) to a stable 5V output. These modules often feature a standard USB port, making them ideal for powering and charging common USB devices.
Features:
  • High efficiency: Many modules operate with a conversion efficiency of up to 96%, with higher input voltages resulting in better efficiency.
  • Integrated USB port: Provides a simple and convenient way to connect and power or charge standard USB devices.
  • Compact size: The small form factor makes these modules suitable for space-constrained applications and DIY projects.
  • Indicator light: Some versions have an LED that indicates when the module is active and may turn off when the input voltage is too low (e.g., below 2.7V).
  • Protection (or lack thereof): Not all modules include built-in protection. Some lack input reverse-polarity protection or short-circuit protection, requiring you to use protected lithium batteries for safety.
Applications:
  • DIY power bank: You can create a portable charger for mobile phones, MP3 players, or other gadgets by connecting a lithium-ion battery or multiple AA batteries to the module’s input.
  • Powering microcontroller projects: Many microcontrollers, like some Arduino boards, run on 5V. A booster module can provide a stable 5V power source from a lower-voltage battery, such as in an Internet of Things (IoT) device.
  • Powering USB peripherals: It can be used to power any low-power USB device, such as an LED light, fan, or small electronic gadget, from a battery pack.
  • Battery-powered systems: Useful for powering sensors, actuators, or other components that require 5V but are run on a lower voltage battery, like in hobbyist robotics.
How it works:
At its core, a 3V to 5V booster module uses a step-up converter to increase the voltage.
  • Input: The module accepts a low-voltage input, often within a 1V to 5V range, but is optimized for inputs around 3V, such as those from a single lithium-ion battery (3.7V) or two AA batteries (3V).
  • Boost circuit: The converter uses an internal switching circuit, often involving a chip like the MT3608 or similar, to rapidly switch the voltage on and off.
  • Inductor and capacitor: An inductor stores energy from the voltage surges, and a capacitor smooths out the output, creating a stable 5V DC power source.
  • USB output: The module includes a USB-A port to provide the regulated 5V output, which is the standard voltage for powering USB devices.
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