--- product_id: 23451054 title: "64970 Parasitic Drain Tester" brand: "lisle" price: "$89.29" currency: USD in_stock: true category: "Lisle" url: https://www.desertcart.ec/products/23451054-64970-parasitic-drain-tester store_origin: EC region: Ecuador --- # Power surge bypass switch In-line fuse protection Stacking banana connectors 64970 Parasitic Drain Tester **Brand:** lisle **Price:** $89.29 **Availability:** ✅ In Stock ## Summary > 🔧 Diagnose hidden drains like a pro—never get caught powerless again! ## Quick Answers - **What is this?** 64970 Parasitic Drain Tester by lisle - **How much does it cost?** $89.29 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/23451054-64970-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 - • **Surge-Proof Testing:** Bypass your multimeter effortlessly during connection to prevent damage from power surges. - • **Continuous Monitoring:** Keep tester and meter connected until all vehicle systems shut down, isolating hidden drains with precision. - • **Versatile Voltage Access:** Stacking banana connectors enable multi-point voltage measurements across your vehicle’s electrical system. - • **Professional-Grade Convenience:** Compact, lightweight design with lifetime warranty—engineered for the discerning automotive pro. - • **Ultimate Battery Drain Defense:** Replaceable in-line fuses safeguard your tools and vehicle from unexpected high current spikes. ## Overview The Lisle 64970 Parasitic Drain Tester offers a reliable, surge-protected method to connect your multimeter to vehicle electrical systems, enabling precise detection of hidden battery drains. Featuring replaceable in-line fuses, a power surge bypass switch, and stacking banana connectors for versatile voltage measurement, this lightweight, hand-powered tester is a must-have for automotive professionals seeking efficient, damage-free diagnostics backed by a lifetime warranty. ## Description Provides an Easy Method to Connect a Multimeter to the Vehicle Electrical System to Diagnose Hidden Battery 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 | #60,420 in Automotive ( See Top 100 in Automotive ) #98 in Electrical System Tools | | Brand Name | Lisle | | Color | Factory | | Compatible Devices | Multimeter | | Customer Reviews | 4.5 4.5 out of 5 stars (1,231) | | 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 | | Manufacturer | LISLE | | Measurement Type | Multimeter | | Minimum Operating Voltage | 9 volts | | Model | 64970 | | Number of Items | 1 | | Part Number | 64970 | | Power Source | Hand Powered | | 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 ![64970 Parasitic Drain Tester - Image 1](https://m.media-amazon.com/images/I/71yyN+ES4TL.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. ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ec/products/23451054-64970-parasitic-drain-tester](https://www.desertcart.ec/products/23451054-64970-parasitic-drain-tester) --- *Product available on Desertcart Ecuador* *Store origin: EC* *Last updated: 2026-09-28*