AA Battery LED Tester

Product details

AA Battery LED Tester is a simple battery-powered tool for checking whether individual LEDs are working. In particular, it is described as safe to use for testing individual LEDs that are the 3V versions. Practically, it helps you quickly verify an LED before reinstalling it into an aquarium light or troubleshooting a non-functioning lighting section.

Features:

• Made for testing individual LEDs rather than testing an entire light unit
• Supported for LEDs identified as 3V versions
• Battery-powered operation for convenient bench or in-shop checks
• Uses two AA batteries, so testing can be done without a dedicated power supply
• Helps reduce guesswork when diagnosing LED lighting faults in aquarium setups
• Useful as a first step before replacing parts in DIY or maintenance work
• Compact, single-purpose design suited to quick verification tasks

Specifications:

• Test compatibility: Safe to use for testing individual LEDs (3V versions)
• Power source: Two AA batteries
• Batteries included: Not included