This is the same unit they sell at harbor freight for 20 bucks right down to the switch, do your self a favor and buy the schumacher instead. tom

Everything I purchase at Harbor freight does not last .so I think they sell seconds ..

Is this made in america

i'm sorry to say, this is not made in america. that was the first question i had when i went to replace my old one.ther are only a few that are made in usa and they are more than $300. so they got us over a barrel, you buy this one for under $50 or the next one up is $300. that's what they mean when america does make anything anymore. we do make stuff, but its huge money and priced right out of the market. the us govt needs to step in, tax the crap out of this south east asia stuff so the price would be $150, then the us companies could compete cause they could sell alot more at a lower price. but the us companies dont see those kind of sales numbers, so its hard to compete in a free trade market. so, all in all, the answer is no.

Is the switch momentary or does it stay on?

The switch is just to test the load on the battery it is spring loaded and stays in the off position .

Will this device measure amperage in 6 & 12 volt deer feeder batteries? We have batteries that show good voltage but don’t work. Need to check amps.

It doesn’t measure amps. It puts a 100 amp load on the battery and you can see how much the voltage drops.

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Description

🔧 Power up your diagnostics with speed and precision!

BUILT TO LAST - Durable chrome-plated steel case with ceramic insulator for long-term reliability.
PORTABLE POWERHOUSE - Compact, lightweight design fits perfectly in your toolkit or glovebox.
SAFE USER FRIENDLY - Load safety switch prevents arcs, while zero-adjust display ensures clear pass/fail results.
PRECISION VOLTAGE INSIGHT - Measures cranking and charging voltage to keep your vehicle running smoothly.
RAPID BATTERY HEALTH CHECK - Get accurate battery status in just 10 seconds—no more guessing.

The OTC 3180 100 Amp Battery Load Tester is a professional-grade diagnostic tool designed for quick and reliable battery testing. Featuring a 100 Amp load capacity, it supports both 6V and 12V batteries and delivers results in just 10 seconds. Its oversized, zero-adjust display simplifies pass/fail readings, while a rugged chrome-plated steel case and safety features ensure durability and user protection. Ideal for vehicle owners and mechanics seeking fast, accurate battery health insights.

Reviews

M**L

El producto esta bien pruebas de bateria sin problemas solo que el cable y pinzas se ven muy fragil los cables muy cortos . Ecomprado otro modelos de esta misma marca y si me antraido cables y pinzas uso rudo alo mejor no es original

30.11.2025

R**E

Works great

7.02.2026

A**R

This tester is well built. It is accurate and does exactly what it is supposed to do. Cables are short but so are most load testers. She warms up good as they do but the coil handles it well. Would recommend. GOOD VALUE HERE

11.06.2020

U**1

سئيء

27.09.2023

R**Z

Llego un dia antes y no presento ni presenta fallas.

4.09.2022

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ASIN	B000F5HU6C
Customer Reviews	4.6 4.6 out of 5 stars (987)
Date First Available	August 3, 2012
Is Discontinued By Manufacturer	No
Item model number	3180
Product Dimensions	35.56 x 18.8 x 9.14 cm; 294.84 g

OTC 3180 100 Amp Battery Load Tester

Details

Description

Specifications

Reviews

Common Questions