---
product_id: 537543852
title: "2 Pack Battery Tester, Universal Battery Checker for AA/AAA/C/D / 9V / 1.5V Button Cell Batteries Household Battery Life Level Testers Power Monitor Meter (Requires No Battery for Operation)"
brand: "tfjaytoo"
price: "NT$422"
currency: TWD
in_stock: true
category: "Tfjaytoo"
url: https://www.desertcart.tw/products/537543852-2-pack-battery-tester-universal-battery-checker-for-aa-aaa
store_origin: TW
region: Taiwan
---

# Compact & portable design Accurate voltage level readings Universal battery compatibility 2 Pack Battery Tester, Universal Battery Checker for AA/AAA/C/D / 9V / 1.5V Button Cell Batteries Household Battery Life Level Testers Power Monitor Meter (Requires No Battery for Operation)

**Brand:** tfjaytoo
**Price:** NT$422
**Availability:** ✅ In Stock

## Summary

> 🔋 Power up your peace of mind with the ultimate universal battery tester!

## Quick Answers

- **What is this?** 2 Pack Battery Tester, Universal Battery Checker for AA/AAA/C/D / 9V / 1.5V Button Cell Batteries Household Battery Life Level Testers Power Monitor Meter (Requires No Battery for Operation) by tfjaytoo
- **How much does it cost?** NT$422 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/537543852-2-pack-battery-tester-universal-battery-checker-for-aa-aaa)

## Best For

- tfjaytoo enthusiasts

## Why This Product

- Trusted tfjaytoo brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Save Money & Time:** Eliminate guesswork and avoid unnecessary battery purchases effortlessly.
- • **No Batteries Needed:** Self-powered design means zero downtime—always ready when you are.
- • **Precision Power Insights:** Clear indicator bars deliver instant, reliable battery health status.
- • **Pocket-Sized Power Monitor:** Lightweight and compact for on-the-go testing anywhere, anytime.
- • **Test Every Battery, Every Time:** Supports AA, AAA, C, D, 9V & button cells for ultimate versatility.

## Overview

The 2 Pack Battery Tester by TFJAYTOO is a versatile, no-battery-required device designed to accurately measure voltage levels across AA, AAA, C, D, 9V, and 1.5V button cell batteries. Its compact, lightweight design makes it perfect for home, travel, or on-the-go use, helping you save money and time by quickly identifying battery health with easy-to-read indicator bars.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BY9771NC |
| Brand | TFJAYTOO |
| Brand Name | TFJAYTOO |
| Color | Black |
| Customer Reviews | 4.4 out of 5 stars 2,431 Reviews |
| Included Components | NO |
| Manufacturer | TFJAYTOO |
| Measurement Type | Voltmeter |
| Min. Operating Voltage | 1.5 Volts |
| Minimum Operating Voltage | 1.5 Volts |
| Part Number | CDY |
| Power Source | Battery Powered |
| Style | Compact |
| Style Name | Compact |
| Unit Count | 2.0 Count |

## Product Details

- **Brand:** TFJAYTOO
- **Color:** Black
- **Min. Operating Voltage:** 1.5 Volts
- **Power Source:** Battery Powered
- **Style:** Compact

## Images

![2 Pack Battery Tester, Universal Battery Checker for AA/AAA/C/D / 9V / 1.5V Button Cell Batteries Household Battery Life Level Testers Power Monitor Meter (Requires No Battery for Operation) - Image 1](https://m.media-amazon.com/images/I/61QsAf2--rL.jpg)

## Frequently Bought Together

- 2 Pack Battery Tester, Universal Battery Checker for AA/AAA/C/D / 9V / 1.5V Button Cell Batteries Household Battery Life Level Testers Power Monitor Meter (Requires No Battery for Operation)
- Tenergy T-333 Universal Battery Tester, LCD Display, Cell Checker, Multi-Purpose Small Battery Tester, for AA, AAA, C, D, 9V, CR123A, CR2, CRV3, 2CR5k CRP2, and Button Cell Batteries
- Amazon Basics AAA Alkaline High-Performance Batteries, 1.5 Volt, 10-Year Shelf Life, 36 count (Pack of 1)

---

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**Shop now:** [https://www.desertcart.tw/products/537543852-2-pack-battery-tester-universal-battery-checker-for-aa-aaa](https://www.desertcart.tw/products/537543852-2-pack-battery-tester-universal-battery-checker-for-aa-aaa)

---

*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-05-17*