---
product_id: 1832205
title: "3721 Battery and Charging System Monitor"
brand: "innova"
price: "€ 54.64"
currency: EUR
in_stock: true
category: "Innova"
url: https://www.desertcart.pt/products/1832205-3721-battery-and-charging-system-monitor
store_origin: PT
region: Portugal
---

# LCD bar graph voltage display Pivoting head for optimal viewing 12V battery system compatible 3721 Battery and Charging System Monitor

**Brand:** innova
**Price:** € 54.64
**Availability:** ✅ In Stock

## Summary

> 🔋 Stay Powered, Stay Ahead — Never Get Caught Off Guard!

## Quick Answers

- **What is this?** 3721 Battery and Charging System Monitor by innova
- **How much does it cost?** € 54.64 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/1832205-3721-battery-and-charging-system-monitor)

## Best For

- innova enthusiasts

## Why This Product

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

## Key Features

- • **Color-Coded LED Alerts:** Quickly identify battery status at a glance—no guesswork, just confidence.
- • **Ergonomic Pivoting Display:** Adjust the LCD head for the perfect viewing angle, even in tight spaces.
- • **Universal 12V Compatibility:** Seamlessly works with all 12-volt negative ground vehicles for versatile use.
- • **Instant Battery Health Check:** Plug in and get real-time voltage readings to avoid unexpected breakdowns.
- • **Surge Protection for Your Engine:** Safeguards your vehicle’s computer and accessories during jump starts and recharges.

## Overview

The Innova 3721 Battery and Charging System Monitor is a compact, plug-and-play device designed for 12-volt negative ground vehicles. Featuring an easy-to-read LCD bar graph and color-coded LEDs, it provides instant, accurate battery voltage and charge status. Its pivoting head ensures optimal visibility, while built-in surge protection safeguards your vehicle’s electronics during jump starts and recharging. Trusted by thousands with a 4.5-star rating, it’s the essential tool for proactive vehicle maintenance.

## Description

The INNOVA Battery and Charging System Monitor displays the condition of your battery and charging system instantly. It protects the engine computer and 12-volt accessories from damaging surges when jump starting or recharging. Easily plugs into the vehicle's cigarette lighter or power receptacle to monitor battery and charging system voltage. The LCD screen displays the measured voltage with a bar graph to indicate battery charge level and the color-coded LEDs quickly identify the battery's charge status. The head pivots for easy viewing and angle adjustment.

## Features

- Easily plugs into vehicle’s cigarette lighter or power receptacle to monitor battery and charging system voltage
- Designed for 12-volt negative ground systems
- LCD displays measured voltage with a bar graph to indicate battery charge level
- Color-coded LEDs quickly identify battery’s charge status
- Head pivots for easy viewing and angle adjustment

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000EVWDU0 |
| Best Sellers Rank | #100,935 in Automotive ( See Top 100 in Automotive ) #114 in Battery Testers |
| Brand Name | Innova |
| Color | Limited Edition |
| Compatible Devices | Vehicles with 12-volt negative ground systems |
| Customer Reviews | 4.5 4.5 out of 5 stars (2,629) |
| Global Trade Identification Number | 00042173037216 |
| Item Dimensions | 10 x 1 x 6.5 inches |
| Item Weight | 3.2 ounces |
| Manufacturer | Innova |
| Measurement Type | Voltmeter |
| Minimum Operating Voltage | 12 volts |
| Model | 3721 |
| Number of Items | 1 |
| Part Number | 3721 |
| Power Source | Corded Electric |
| Style Name | 12-volt |
| UPC | 077344875533 043944196088 604945305505 042173037216 043993994284 074994532588 |
| Unit Count | 1 Count |
| Warranty Description | 1 year limited |

## Product Details

- **Brand:** Innova
- **Color:** Limited Edition
- **Item Weight:** 3.2 ounces
- **Power Source:** Corded Electric
- **Style:** 12-volt

## Images

![3721 Battery and Charging System Monitor - Image 1](https://m.media-amazon.com/images/I/71M5TQTAY8L.jpg)

## Frequently Bought Together

- Innova 3721 Battery and Charging System Monitor
- 12V Plug in Car Battery and Charging System Tester, Test Battery Condition & Alternator Charging (LCD Display Car Battery 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.pt/products/1832205-3721-battery-and-charging-system-monitor](https://www.desertcart.pt/products/1832205-3721-battery-and-charging-system-monitor)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-09-09*