4 x AA Battery Pack with USB Output and Switch

What is it?

This lightweight and portable USB power bank is powered by 4 standard AA batteries (not included), providing an unregulated battery output through a USB connector for voltage-compatible prototyping, testing, and portable projects. Unlike traditional rechargeable USB power banks, which are heavier and require downtime for recharging, this unit lets you quickly swap out fresh AA batteries and keep working without interruption.

Output: unregulated 6V nominal with 4 × 1.5V AA cells. This unit does not provide regulated 5V USB power. Actual voltage changes as batteries discharge. Only connect equipment rated for the battery pack’s output voltage.

Features:

• Powered by 4x AA batteries (alkaline or rechargeable NiMH)
• USB connector carries unregulated battery voltage, not a regulated 5V USB supply. Use only devices rated for the battery pack’s output voltage.
• Convenient on/off switch to control power delivery without unplugging
• Bright power LED indicator to easily confirm when the unit is active
• Lightweight and compact for easy integration into mobile or temporary setups

Potential Use Cases:

• Prototyping electronics on a breadboard where a full-size power bank is too bulky
• Field testing portable devices where a wall plug isn’t available
• DIY projects that need quick and easy battery swaps without waiting for recharges
• Educational electronics projects designed for an unregulated battery supply
• Portable power for compatible circuits rated for the battery pack’s output

The output is nominally 6V when using 4 AA cells rated at 1.5V each. It is not regulated: actual voltage varies with battery type, condition and discharge. Rechargeable NiMH cells provide a different voltage from 1.5V cells. Check your device’s permitted input range before connecting; a USB connector alone does not make the output suitable for devices requiring regulated 5V.