Universal Digital Battery Tester for AA AAA 9V and Button Cell Batteries

Quickly check the power level of nearly any household battery with this universal digital battery tester. Designed for AA, AAA, 9V, and button cell batteries, this compact tool helps you identify which batteries still have life and which need replacing—saving you time, money, and frustration.

Key Features

• Compatible with AA, AAA, C, D, 9V, and button cell batteries

• Digital needle-style display clearly indicates charge level

• No external power needed—battery being tested powers the unit

• Compact and lightweight for easy storage in drawers or toolboxes

• Essential for tech drawers, tool kits, and emergency kits

Why Choose Our Universal Battery Tester
Unlike guessing or tossing batteries prematurely, this tester gives you a clear, fast readout on battery strength. No apps, no charging—just reliable performance when you need it.

Perfect For

• Checking old or mixed batteries

• Families with battery-powered toys or remotes

• DIYers and technicians

• Emergency and backup supply organizers

Specs and Care

• Compatible Battery Types: AA, AAA, C, D, 9V, button cell

• Display: Analog needle with Good / Low / Replace indicators

• Power: No battery required

• Size: Compact pocket-friendly design

• Material: Durable ABS plastic

Stop Guessing—Test Your Batteries with Confidence
From toys to tools, the Universal Battery Tester helps you power smarter and reduce waste with every check.