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?

It helps because it has inline fuses which will protect your voltage meter. When using your meter directly you risk damaging your meter.

what gauge are the cables that connect to the battery and terminal. Can I start and run the vehicle with the tester connected?

No, they are a light gauge wire. Too light of wire to handle load of starter.

Does it come with instructions?

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.

This seems useless. Why not use a clamp on dc meter?

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.

Lisle 64970 Parasitic Drain Tester

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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£35.21

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Description

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

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.

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.

Specifications

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

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