---
product_id: 23451054
title: "Lisle 64970 Parasitic Drain Tester"
brand: "lisle"
price: "€ 54.56"
currency: EUR
in_stock: true
reviews_count: 13
category: "Lisle"
url: https://www.desertcart.pt/products/23451054-lisle-64970-parasitic-drain-tester
store_origin: PT
region: Portugal
---

# Power surge bypass switch In-line fuse protection Stacking banana connectors Lisle 64970 Parasitic Drain Tester

**Brand:** lisle
**Price:** € 54.56
**Availability:** ✅ In Stock

## Summary

> 🔧 Diagnose hidden drains like a pro—never get caught powerless again!

## Quick Answers

- **What is this?** Lisle 64970 Parasitic Drain Tester by lisle
- **How much does it cost?** € 54.56 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/23451054-lisle-64970-parasitic-drain-tester)

## Best For

- lisle enthusiasts

## Why This Product

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

## Key Features

- • **Built-in Fuse Safety:** Replaceable in-line fuses shield your tools from unexpected high current surges, ensuring durability and peace of mind.
- • **Compact & Lightweight:** At just 3 ounces and a sleek 6.5 x 10.5 inch profile, this tester fits perfectly in any professional toolbox.
- • **Continuous Monitoring:** Keep the tester and meter connected until all vehicle systems shut down, isolating parasitic drains with precision.
- • **Surge-Proof Connection:** Bypass your multimeter effortlessly during connection to prevent damage from sudden power spikes.
- • **Versatile Voltage Testing:** Stacking banana connectors enable multi-point voltage measurements across your vehicle without swapping leads.

## Overview

The Lisle 64970 Parasitic Drain Tester is a professional-grade diagnostic tool designed to easily connect a multimeter to your vehicle’s electrical system. Featuring replaceable in-line fuses for safety, a power surge bypass switch, and stacking banana connectors for versatile voltage testing, it helps identify hidden battery drains efficiently. Compact, lightweight, and backed by a lifetime warranty, it’s a must-have for automotive professionals and enthusiasts aiming to maintain peak vehicle performance.

## Description

Provides an Easy Method to Connect a Multimeter to the Vehicle Electrical System to Diagnose Hidden Battery Drain.

Review: Works great - Great tool to have for the tool box
Review: Excellent product - This tool is an excellent piece to help locate a parasitic drain.

## Features

- Replaceable in-line fuses protect both the meter and tester in the event a high current source on the vehicle is left on
- The multimeter is bypassed with the switch during connection in case of a power surge
- The tester and meter can remain connected until other computer systems shut down, isolating the drain
- As a convenience, stacking banana connectors are used on the tester
- This allows voltage to be measured on various locations on the vehicle during the drain test, using standard test leads

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00RGN5UAY |
| Best Sellers Rank | #34,770 in Automotive ( See Top 100 in Automotive ) #69 in Electrical System Tools |
| Brand | Lisle |
| Brand Name | Lisle |
| Color | Factory |
| Compatible Devices | Multimeter |
| Customer Reviews | 4.5 out of 5 stars 1,229 Reviews |
| Global Trade Identification Number | 00083045649700 |
| Included Components | Tester |
| Item Dimensions | 6.5 x 10.5 x 1 inches |
| Item Type Name | Tester |
| Item Weight | 3.04 ounces |
| Item dimensions L x W x H | 6.5 x 10.5 x 1 inches |
| Manufacturer | LISLE |
| Measurement Type | Multimeter |
| Minimum Operating Voltage | 9 volts |
| Model | 64970 |
| Number of Items | 1 |
| Part Number | 64970 |
| Power Source | Hand Powered |
| Style | Standard |
| Style Name | Standard |
| UPC | 083045649700 |
| Unit Count | 1 Count |
| Warranty Description | Lifetime |

## Product Details

- **Brand:** Lisle
- **Color:** Factory
- **Item Weight:** 3.04 ounces
- **Power Source:** Hand Powered
- **Style:** Standard

## Images

![Lisle 64970 Parasitic Drain Tester - Image 1](https://m.media-amazon.com/images/I/71yyN+ES4TL.jpg)
![Lisle 64970 Parasitic Drain Tester - Image 2](https://m.media-amazon.com/images/I/A19DopQxnkL.jpg)
![Lisle 64970 Parasitic Drain Tester - Image 3](https://m.media-amazon.com/images/I/A1aLI9a9JmL.jpg)
![Lisle 64970 Parasitic Drain Tester - Image 4](https://m.media-amazon.com/images/I/918H6n10DHL.jpg)

## Questions & Answers

**Q: How is using this tester preferable to hooking up your multimeter in series with alligator clips and a blade fuse soldered inline with your leads?**
A: It helps because it has inline fuses which will protect your voltage meter. When using your meter directly you risk damaging your meter.

**Q: what gauge are the cables that connect to the battery and terminal. Can I start and run the vehicle with the tester connected?**
A: No, they are a light gauge wire. Too light of wire to handle load of starter.

**Q: Does it come with instructions?**
A: not really, you have to look at a video from mac or matco which has same tool just their name. its hard the first time ,but you can figure it out after you start to use it.

**Q: This seems useless. Why not use a clamp on dc meter?**
A: I liked it because it has a fuseable link on both leads and you can connect your probe to it. I blew a couple fuses while trying to track down a short and it prevented an damage to my rather inexpensive multimeter. It's designed so that clamp it to the battery directly. If you already have leads with clamps then yes this would probably not be helpful to you. It worked great for me fixing a slow drain on our Jeep. I mostly found it helpful while pulling fuses until I found the circuit that was causing the trouble. I could have spent a fortune having it in the shop so I figured spending a couple bucks on this was a much better option.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great
*by B***W on September 30, 2025*

Great tool to have for the tool box

### ⭐⭐⭐⭐⭐ Excellent product
*by J***E on September 20, 2025*

This tool is an excellent piece to help locate a parasitic drain.

### ⭐⭐⭐⭐⭐ #1
*by A***W on April 11, 2026*

Used multiple times and has yet to fail me

## Frequently Bought Together

- Lisle 64970 Parasitic Drain Tester, One Size, Factory
- DMM-11A Fast Acting Digital Multi-Meter Fuse 11 Amp 1000 Volt 803293 (2 Pack) QSU
- DMM-11A & DMM-44/100 Multi-Meter Fuse Combo Pack QSU

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**Shop now:** [https://www.desertcart.pt/products/23451054-lisle-64970-parasitic-drain-tester](https://www.desertcart.pt/products/23451054-lisle-64970-parasitic-drain-tester)

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