EMOS UNI D3 Battery Tester (Model N0322)

The EMOS UNI D3 (N0322) is a universal battery tester designed to quickly check the charge level of a wide variety of battery types. It’s ideal for assessing AA, AAA, C, D, 9 V and button‑cell (1.5 V/3 V) batteries, helping you determine whether a battery is still usable or needs replacement. :contentReference[oaicite:1]{index=1}

Key Features

• Supported battery types: N (mini‑size), AAA, AA, C, D, 9 V, and button‑cell batteries (1.5 V or 3 V). :contentReference[oaicite:2]{index=2}
• LCD display: Clear numeric read‑out of battery voltage/charge condition. :contentReference[oaicite:3]{index=3}
• No external power needed: The tester draws power from the battery being tested, so no separate power supply is required. :contentReference[oaicite:4]{index=4}
• Compact size: Measures approximately 110 × 60 × 25 mm—easy to store or keep with your toolbox. :contentReference[oaicite:5]{index=5}

Specifications (Selected)

• Model: N0322 (UNI D3) :contentReference[oaicite:6]{index=6}
• Supported battery types: N, AAA, AA, C, D, 9 V, button cells (1.5 V / 3 V) :contentReference[oaicite:7]{index=7}
• Dimensions: Approx. 110 mm × 60 mm × 25 mm :contentReference[oaicite:8]{index=8}
• Load resistance: Universal for both standard (AA/AAA/C/D/9V) and button batteries. :contentReference[oaicite:9]{index=9}
• EAN: 8592920016688 :contentReference[oaicite:10]{index=10}

Why Choose the UNI D3?

• Gives a quick and simple way to check whether batteries are still good, avoiding needless waste of still‑usable batteries.
• Supports a wide range of common household battery sizes, making it versatile for home, workshop or toy‑repair use.
• Its self‑powered design means you don’t need to hunt for another battery just to test your batteries.

Usage Tips & Considerations

• The displayed voltage/charge level gives an indication of battery health—but it may **not** fully represent internal resistance or battery performance under load‑especially for high‑drain applications.
• Ensure the correct contact alignment when placing the battery (especially for different sizes such as button cells) so the tester can make proper connection. Some user reviews mention the sliding contact wire may become weak with frequent use. :contentReference[oaicite:11]{index=11}
• For best results with high‑drain devices, if possible test the battery in the actual device or under load, because the tester’s reading may reflect idle voltage rather than actual usable capacity.

Keywords

EMOS UNI D3, model N0322, universal battery tester, AA battery tester, AAA tester, 9 V battery tester, button cell battery tester, LCD battery checker