l Battery Tester

Stop guessing which batteries still have life — the BT189 Battery Tester instantly tells you if they’re good, weak, or ready for the recycling bin.

This compact tester measures voltage from 1.2V to 4.8V and works with most everyday batteries. Just press the battery into the contact slot and read the clear digital screen — no charging, no setup, no tools.

What it does

• Tests AA, AAA, C, D, button cells, and 3.7V rechargeable batteries

• Shows real voltage on a large easy-to-read LCD display

• Helps you avoid throwing away good batteries

• Saves money and prevents device damage from weak cells

Why it’s useful

Instead of swapping batteries blindly, you’ll know instantly:

• Remote not working? Dead battery.

• Flashlight dim? Weak battery.

• Toy won’t turn on? Battery still good — problem solved.

Build & design

• Durable ABS insulated housing

• Lightweight and portable

• No external power needed

• One-hand operation

Perfect for: homes, garages, camera gear, gaming controllers, and emergency kits.