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.

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OTC 3181 130 Amp Heavy-Duty Battery Load Tester Black

Product ID: 81459588

Details

Brand
OTC
Colour
Black Red
Item weight
1.38 Grams
Power source
Battery
Style
Tool

⚡130A heavy-duty load

🔋6V & 12V battery compatible

⏱️10-second rapid test

$431.54

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Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Test fast, grip tight, power right — the ultimate battery check for pros on the go!

GRIP GO CLAMPS - Uniquely engineered clamps ensure a rock-solid hold on both top and side post batteries.
SPEEDY DIAGNOSTICS - Get reliable test results in just 10 seconds—because your time is money.
TOOL READY STORAGE - Built-in side tabs and back brackets keep your tester secure on your toolbox or wall—always within reach.
POWER PACKED PRECISION - Delivers a robust 130-amp load for ultra-accurate battery health insights.
BIG SCREEN NO GUESSWORK - Extra-large 0-16 volt display with zero adjust for crystal-clear readings every time.

The OTC 3181 is a heavy-duty, ergonomically designed battery load tester delivering a powerful 130-amp load to provide accurate diagnostics in just 10 seconds. Compatible with both 6V and 12V batteries, it features uniquely designed clamps for a secure grip on various battery posts and an extra-large, easy-to-read 0-16 volt display with zero adjust. Lightweight and equipped with convenient storage tabs, this tool is a must-have for professional-grade vehicle maintenance.

Specifications

ASIN	B000O3U2UQ
Best Sellers Rank	892,412 in Automotive ( See Top 100 in Automotive ) 733 in Car Battery Testers
Brand	OTC
Colour	Black, Red
Compatible Devices	6V and 12V batteries
Customer Reviews	4.6 4.6 out of 5 stars (718)
Global Trade Identification Number	00731413417566
Item Dimensions	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
Number of Items	1
Number of Packs	1
Power Source	Battery Powered
Product Warranty	Repair Only
Specification Met	CE, RoHS, UL
Style Name	Tool
UPC	731413417566
Unit Count	1.0 count

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$431.54

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

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The product quality is outstanding. Exactly what I needed for my work.

1 month ago

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