---
product_id: 46736592
title: "12V Plug in Car Battery and Charging System Tester, Test Car Power Condition & Alternator Charging(LCD Display Car Battery Monitor Voltmeter)"
brand: "tn tonny"
price: "13.46 OMR"
currency: OMR
in_stock: true
url: https://www.desertcart.com.om/products/46736592-12v-plug-in-car-battery-and-charging-system-tester-test
store_origin: OM
region: Oman
---

# Pivoting head LCD display 12V compatibility 12V Plug in Car Battery and Charging System Tester, Test Car Power Condition & Alternator Charging(LCD Display Car Battery Monitor Voltmeter)

**Brand:** tn tonny
**Price:** 13.46 OMR
**Availability:** ✅ In Stock

## Summary

> 🔍 Power Up Your Knowledge!

## Quick Answers

- **What is this?** 12V Plug in Car Battery and Charging System Tester, Test Car Power Condition & Alternator Charging(LCD Display Car Battery Monitor Voltmeter) by tn tonny
- **How much does it cost?** 13.46 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/46736592-12v-plug-in-car-battery-and-charging-system-tester-test)

## Best For

- tn tonny enthusiasts

## Why This Product

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

## Key Features

- • **Read with Ease:** Swivel head design for optimal viewing angles, even in tight spaces.
- • **Compact Convenience:** Pocket-sized for on-the-go testing—never be caught off guard!
- • **Visualize Your Power:** LCD display with bar graph for clear voltage readings.
- • **Guaranteed Reliability:** 1-year warranty ensures your investment is protected.
- • **Stay Ahead of Battery Issues:** Easily plugs into any DC 12V cigarette lighter for instant diagnostics.

## Overview

The 12V Plug in Car Battery and Charging System Tester is a compact, user-friendly device designed to monitor your vehicle's battery health and alternator performance. Featuring an LCD display for clear voltage readings and a pivoting head for easy visibility, this tester is perfect for any car owner looking to stay informed about their battery's condition. Plus, with a 1-year warranty, you can trust in its reliability.

## Description

Tonny 12V Cigarette Lighter Car Battery and Charging System Tester

## Features

- 【Checking Your battery's and charging system (alternator) health】 Easily plugs into any DC 12 Volt cigarette lighter plugs,If you doubt your battery's health plug it in and get detailed readings.
- 【LCD DISPLAY】 Shows the measured voltage with a bar graph to indicate batteries charging level
- 【PIVOTING HEAD】Swivel head makes it easy to read. It also allows adjustment to avoid hitting with the shifter .
- 【POCKET SIZE】The small size makes it handy and practical.
- 【WARRANTY】- We stand behind all our TN TONNY products. We give 1 year GUARANTEE for our product

## Product Details

- **Brand:** TN TONNY
- **Power Source:** Corded Electric,battery Powered
- **Style:** 12V
- **Color:** Black
- **Item Weight:** 80 Grams

## Images

![12V Plug in Car Battery and Charging System Tester, Test Car Power Condition & Alternator Charging(LCD Display Car Battery Monitor Voltmeter) - Image 1](https://m.media-amazon.com/images/I/4148vDB4AKL.jpg)

## Questions & Answers

**Q: Is this a good thing to have in a camper running on a rechargeable 12V battery?**
A: my car sat for 3 months, jumped it, started fine. several days later, the red light came on. had the battery checked. bad battery. only a year old but full replacement. So yes it works just great.

**Q: Does this require a live outlet when are engine is off?**
A: Yes, it can only measure live voltage. But, many 12v outlets in cars are live with the key/engine off. 
I use it to keep track of my RV battery condition when the engine’s not running.

**Q: Does it show voltage when engine is cranking?**
A: It shows the voltage as soon as you turn the key on but blanks out while the engine is cranking and comes back on as soon as the car starts.  Not while it is cranking.

**Q: Are the readings accurate?**
A: The readings vary from my tester a little by a few 10ths but it could be because one reading is at the battery. The indicator lights work very well which makes it very easy to spy on when driving.

## Frequently Bought Together

- 12V Plug in Car Battery and Charging System Tester, Test Battery Condition & Alternator Charging (LCD Display Car Battery Monitor)
- Innova 3721 Battery and Charging System Monitor
- NOCO GENIUS1, 1A Smart Car Battery Charger, 6V and 12V Automotive Charger, Battery Maintainer, Trickle Charger, Float Charger and Desulfator for Motorcycle, ATV, Lithium and Deep Cycle Batteries

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**Shop now:** [https://www.desertcart.com.om/products/46736592-12v-plug-in-car-battery-and-charging-system-tester-test](https://www.desertcart.com.om/products/46736592-12v-plug-in-car-battery-and-charging-system-tester-test)

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-02-19*