does this work on a 12 V 8D diesel truck battery?

This will work on all batteries 12 volts and less A carbon pile tester would be a better choice for the larger 8D battery

As this tester puts a 130 Amp load on the battery being tested, is that too much load for testing small batteries such as motorcycle & lawn tractors?

Hi R.W., this tester will certainly tell you if smaller batteries are in good shape but it is kind of over kill as it works by resistance testing. Kind of like plugging a toaster onto your battery. It will draw a lot of juice off the battery in just one test with smaller batteries so if they are weak you will know it fast and they will likely need a recharge afterward. I use it for 4 and 8 D size batteries for starting large diesel engines. I would suggest a lighter amp load tester for what you are doing. Something around a 50 amp range.Hope this helps.Paulpaulmgriswold@aol.com

So this would tell you if a car battery is working properly Etc?

It puts a load,like you're trying to start your car,on the battery, and will tell you if the battery is bad. Most batteries last 5 to 6 years cheaper ones less so if it's old just buy a new one But if it's newer you might want to check it before buying a new one. The battery has to be charged though, you cannot check a dead battery , so unless you have access to a battery charger this won't help you.

will this work on 8 volt golf cart batteries?

Hi Cabo, It might as it has scales for 6 or 12 volt. It would read a little high on the 6 volt scale when checking 8 volt. I can't promise it will work though.

Otc 3181 130 Amp Heavy Duty Battery Load Tester Black

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Description

⚡ Test smarter, not harder — power up your garage game!

VERSATILE CLAMP DESIGN - Unique clamps ensure a rock-solid grip on both top and side post batteries for flawless testing.
SMART STORAGE SOLUTIONS - Built-in side tabs and back brackets let you stow your tester neatly on your toolbox or wall—no clutter, no hassle.
POWERFUL 130 AMP LOAD TESTING - Delivers industry-leading heavy-duty battery diagnostics with precision.
EXTRA LARGE EASY READ DISPLAY - Zero-adjustable 0-16V range screen keeps you informed at a glance, even in dim garages.
LIGHTNING FAST 10 SECOND RESULTS - Get reliable battery health insights in the time it takes to grab your coffee.

The OTC 3181 is a rugged, ergonomically designed 130-amp battery load tester that delivers fast, accurate diagnostics for 6V and 12V batteries. Featuring uniquely engineered clamps for secure contact, a large zero-adjustable display, and convenient storage options, it’s the essential tool for any professional or enthusiast aiming to keep vehicle batteries in peak condition.

Specifications

ASIN	B000O3U2UQ
Best Sellers Rank	639,838 in Automotive ( See Top 100 in Automotive ) 622 in Car Battery Testers
Brand	OTC
Colour	Black, Red
Compatible Devices	6V and 12V batteries
Customer Reviews	4.6 out of 5 stars 717 Reviews
Global Trade Identification Number	00731413417566
Item Dimensions	22.9 x 27.9 x 10.7 centimetres
Item Weight	1.38 Grams
Item dimensions L x W x H	22.9 x 27.9 x 10.7 centimetres
Item weight	1.38 Grams
Manufacturer	Sunpro
Manufacturer Part Number	3181
Measurement Type	Ammeter
Minimum Operating Voltage	6 Volts (DC)
Model Number	3181
Power Source	Battery Powered
Power source	Battery Powered
Product Warranty	Repair Only
Specification Met	CE, RoHS, UL
Style	Tool
Style Name	Tool
UPC	731413417566
Unit Count	1.0 count

Reviews

M**L

Exelente para lo que lo uso

Exelente producto

20.03.2025

L**E

A Great Tool

I love this tool. It reliable, easy to use, has a heavy duty coil, good clamps and its a sure way to tell it that battery still has it in it. I think it's a must have an any garage.

16.02.2026

M**O

Great product

Does what it's supposed to do.

7.08.2024

D**E

Great for the Price

It checks the batteries as it should and I personally like the analog better than the digital.

19.01.2020

M**.

정확한 배터리 테스트

A battery test is easy ,accurate , and safe. The price is good for the performance.

27.03.2026

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago