---
product_id: 318372905
title: "QWORK® Battery Capacity Tester, Battery Monitor, Voltage Range 8V-80V and 0-100A Sampler base, with 6.5ft / 2m Custom Cable, for Auto Car Motor Boat Caravan RV"
brand: "qwork"
price: "€ 85.83"
currency: EUR
in_stock: true
category: "Qwork"
url: https://www.desertcart.gr/products/318372905-qwork-battery-capacity-tester-battery-monitor-voltage-range-8v-80v
store_origin: GR
region: Greece
---

# 8V-80V voltage range 6.5ft custom cable for flexible setup 0-100A high precision current detection QWORK® Battery Capacity Tester, Battery Monitor, Voltage Range 8V-80V and 0-100A Sampler base, with 6.5ft / 2m Custom Cable, for Auto Car Motor Boat Caravan RV

**Brand:** qwork
**Price:** € 85.83
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** QWORK® Battery Capacity Tester, Battery Monitor, Voltage Range 8V-80V and 0-100A Sampler base, with 6.5ft / 2m Custom Cable, for Auto Car Motor Boat Caravan RV by qwork
- **How much does it cost?** € 85.83 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/318372905-qwork-battery-capacity-tester-battery-monitor-voltage-range-8v-80v)

## Best For

- qwork enthusiasts

## Why This Product

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

## Key Features

- • **Data You Can Trust:** Automatically saves your last test data so you never lose track of your battery health.
- • **Precision Power Insight:** Monitor your battery’s voltage, current, and capacity with pinpoint accuracy.
- • **Versatile Compatibility:** Perfect for cars, boats, RVs, e-bikes, and more—one tester for all your power needs.
- • **Crystal Clear LCD Display:** Large backlit screen shows all vital battery stats at a glance, day or night.
- • **Fuel Gauge for Your Battery:** Instantly read battery condition like a fuel gauge to avoid unexpected power failures.

## Overview

The QWORK® Battery Capacity Tester offers high-precision monitoring of voltage (8V-80V) and current (0-100A) with a large backlit LCD for easy reading. Its 6.5ft custom cable ensures flexible installation across a wide range of vehicles and portable equipment, including cars, boats, RVs, and e-bikes. Designed to store your last test data automatically, it’s the essential tool for proactive battery management and peace of mind on the go.

## Description

Accurately monitor battery voltage, current, and capacity with this versatile tester. Suitable for a wide range of applications including cars, boats, and RVs.

## Features

- Battery Condition - High precision Current detection. You can read the battery bank like a fuel gauge, and also clear note the battery status.
- LCD displays - Large backlit LCD displays multiple battery information (voltage, current, consumed power and battery capacity)
- Data storage - designed to automatically store the last testing data when the system shuts off Voltage Capacity - voltage range 8V-80V and current range 0-100A
- Wide Application - It is suitable for mobile and portable equipment, balance cars, cleaning machines,e-bike, instruments, RV, Boat, Caravan etc.
- 100% Satisfied Service - Sincerely hope our products could give you a good experience and some help. Within a month you purchase this product, you can enjoy a worry-free return service. And any questions feel free to contact us, we will try our best to help you.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08HWFPGL5 |
| Best Sellers Rank | 123,796 in Automotive ( See Top 100 in Automotive ) 142 in Car Battery Testers |
| Brand | QWORK |
| Colour | Black |
| Compatible Devices | car, recreational_vehicle, boat, e-bike, RV, caravan, motor, cleaning_machine |
| Country Of Origin | China |
| Customer Reviews | 4.3 4.3 out of 5 stars (350) |
| Item Weight | 250 Grams |
| Manufacturer | QWORK |
| Manufacturer Part Number | WD3941 |
| Maximum Operating Voltage | 80 Volts |
| Measurement Type | Voltmeter |
| Minimum Operating Voltage | 8 Volts |
| Model Number | WD3941 |
| Number of Items | 1 |
| Power Source | Corded Electric |
| Specification Met | Specifications Met |
| Style Name | Voltage |
| UPC | 792332966894 |
| Unit Count | 1.0 count |

## Product Details

- **Brand:** QWORK
- **Colour:** Black
- **Item weight:** 250 Grams
- **Power source:** Corded Electric
- **Style:** Voltage

## Images

![QWORK® Battery Capacity Tester, Battery Monitor, Voltage Range 8V-80V and 0-100A Sampler base, with 6.5ft / 2m Custom Cable, for Auto Car Motor Boat Caravan RV - Image 1](https://m.media-amazon.com/images/I/416CGhpOVVL.jpg)
![QWORK® Battery Capacity Tester, Battery Monitor, Voltage Range 8V-80V and 0-100A Sampler base, with 6.5ft / 2m Custom Cable, for Auto Car Motor Boat Caravan RV - Image 2](https://m.media-amazon.com/images/I/41rpaorvKjL.jpg)
![QWORK® Battery Capacity Tester, Battery Monitor, Voltage Range 8V-80V and 0-100A Sampler base, with 6.5ft / 2m Custom Cable, for Auto Car Motor Boat Caravan RV - Image 3](https://m.media-amazon.com/images/I/41Y88v4OCUL.jpg)
![QWORK® Battery Capacity Tester, Battery Monitor, Voltage Range 8V-80V and 0-100A Sampler base, with 6.5ft / 2m Custom Cable, for Auto Car Motor Boat Caravan RV - Image 4](https://m.media-amazon.com/images/I/415ZigjrJkL.jpg)
![QWORK® Battery Capacity Tester, Battery Monitor, Voltage Range 8V-80V and 0-100A Sampler base, with 6.5ft / 2m Custom Cable, for Auto Car Motor Boat Caravan RV - Image 5](https://m.media-amazon.com/images/I/51slr-K2-fL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Can the flashing screen be turned off when charging?**
A: Long press the left and right keys at the same time.

**Q: Unit appears to go to sleep mode, meaning there is no display at all with voltage applied. button press turns on the device then works ok. Fix for it?**
A: When the battery is neither charging or discharging the screen turns off. When not connected to the grid, which is the usual case with me, generally the screen will go dark around sunset or sunrise when the demands from my RV equal the power produced by my solar panels. When connected to the grid and my battery disconnected from the RV, the screen will be dark half the time. It lights up when my Morningstar charger decides my battery needs a modest "topping off."  It should be noted that the screen goes dark even when the charger is in float mode, the current being so modest as to be almost undectable.

**Q: Does it display 1/10, 1/100 or 1/1000 of a volt?**
A: 1/100.

**Q: how long has anyone extended their display cable**
A: I added 15ft to my original 13ft cable using CAT5 cable - just cut the existing cable in half and soldered the CAT5 in the middle. The original cable has a shield wire that connects to one of the pins; my CAT5 cable didn't have a shield but I combined the four white wires in the CAT5 and used that combined wire to connect to the shield wire. That left 4 wires in the CAT5 to connect to the remaining 4 wires of the original cable. The result worked fine.

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.gr/products/318372905-qwork-battery-capacity-tester-battery-monitor-voltage-range-8v-80v](https://www.desertcart.gr/products/318372905-qwork-battery-capacity-tester-battery-monitor-voltage-range-8v-80v)

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-10-24*