Universal Battery Level Tester

Instant, Color-Coded Power Diagnosis for Everyday Household Batteries

Stop guessing whether your batteries are full, drained, or ready for the recycling bin with the Universal Battery Level Tester. Designed with a multi-tiered stepped slot and high-conductivity contact terminals, this pocket-sized diagnostic tool checks standard AA, AAA, C, D, N, 9V, and 1.55V button cells in seconds. An easy-to-read, three-zone color scale instantly displays battery health (Good, Weak, or Poor), powered directly by the cell being tested so it never needs internal batteries of its own.

Key Features

• Universal Multi-Battery Compatibility: Stepped measuring slot accurately tests standard 1.5V and 9V cells, including AA, AAA, C, D, N, 9V rectangular, and 1.55V button cells.

• Clear Color-Coded Status Scale: Three-color calibrated indicator bar clearly marks battery health across Good (Blue), Weak (Yellow), and Poor (Red) voltage thresholds.

• Dedicated Button Cell Tester: Lower recessed contact bracket provides a secure testing cradle for small watch, hearing aid, and coin batteries.

• No Internal Battery Required: Operates entirely on the active voltage of the inserted battery, remaining ready to test whenever you need it.

• Compact Handheld Portability: Lightweight, pocket-friendly frame slips conveniently into toolkits, utility drawers, or travel bags.

• Two Modern Color Options: Available in clean Black and sleek White finishes to suit your preference.

Specifications

• Product Type: Handheld universal battery capacity checker

• Compatible Battery Types: 9V, D, C, AA, AAA, N, and 1.55V Button Cells

• Reading Scale: Good / Weak / Poor three-tier level bar

• Power Source: Self-powered by tested battery (no internal batteries needed)

• Color Finishes: Black, White

What’s Included in the Box?

• 1 × Universal Multi-Size Battery Level Tester