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.

ASIN	B000O3U2UQ
Best Sellers Rank	#90,016 in Automotive ( See Top 100 in Automotive ) #103 in Battery Testers
Brand	OTC
Color	Black
Date First Available	July 7, 2004
Global Trade Identification Number	00731413417566
Is Discontinued By Manufacturer	No
Item Weight	0.049 ounces
Item dimensions L x W x H	9 x 11 x 4.2 inches
Item model number	3181
Manufacturer	Sunpro
Manufacturer Part Number	3181
Measurement Type	Ammeter
Min. Operating Voltage	6 Volts (DC)
Model	OTC 130 Amp Heavy-Duty Battery Load Tester
Power Source	Battery Powered
Product Dimensions	9 x 11 x 4.2 inches
Specification Met	CE, RoHS, UL
Style	Tool
UPC	731413417566

3181 130 Amp Heavy-Duty Battery Load Tester Black

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