Do these have any lead in them and where are they made?

I think I purchased these battery terminal approx a year ago for use on my 31 hp Yanmar tractor and I did take a look at them approx a month ago and they still looked brand new. I do not know if they have any lead in them. They appear to be all brass with the exception of the clamp fasteners and the post and it's fastener. I am happy with the connectors I received and they seemed to be better quality than the similar connectors I've seen in "big box" stores

can the stud to contact the battery cable be removed and/or replaced?

Yes, the "stud" is just a normal hex bolt. In fact there is nothing holding the hex part of the bolt from dropping by gravity. But the hex part is inside a hex slot so no need to have 2 tools to tighten it. Note also the stud size is 10mm so be sure your cable lug size is big enough. The nut's size should be compatible with the 5/16" stud nut so no need for another size socket to tighten the cable.

Is the stud made of steel or is it stainless steel?

I don’t think they are stainless. Zinc plated mild steel probably. I’ve had these on my truck for over two years and they still look like new. Very happy and would buy again. Hope this helps.

Is the negative terminal opening smaller than the positive?

Yes, because the battery negative post is small than battery positive post.

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Ampper Brass Battery Terminal Connectors, Top Post Battery Terminals Connector Battery Cable Ends for Marine Car Boat RV Vehicles (1 Pair)

Ampper Brass Battery Terminal Connectors, Top Post Battery Terminals Connector Battery Cable Ends for Marine Car Boat RV Vehicles (1 Pair)

Product ID: 440017154

Details

Colour
1 Set
Connector Type
Clamp
Contact Material
Brass
Insulation Material
Non-Insulated
Terminal
Clamp Terminal

⚡Supports 12V standard top post batteries

🔩Brass build for ultimate durability

🛠️Tool-free, direct-fit installation

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Description

🔋 Power up your ride with connectors that mean business!

VERSATILE CONNECTIVITY - Perfect for battery extension, parallel wiring, and grounding tasks
CLEARLY MARKED POLARITY - Positive (+) and Negative (-) terminals labeled for foolproof setup
EFFORTLESS INSTALLATION - Flange nuts and clamp design mean no modifications or extra tools needed
UNIVERSAL COMPATIBILITY - Fits cars, boats, RVs with 19mm/17mm tapered top post batteries
CORROSION RESISTANT BRASS CONSTRUCTION - Engineered for marine-grade strength and longevity

Ampper Brass Battery Terminal Connectors deliver marine-grade durability and corrosion resistance with precision-engineered brass clamps. Designed for 12V standard top post batteries, these connectors feature clearly marked polarity and a direct-fit installation system that requires no modifications. Compatible with cars, boats, and RVs, they enable quick, reliable battery extension, parallel connections, and grounding, making them the go-to choice for professionals and enthusiasts seeking hassle-free, long-lasting power connections.

Specifications

ASIN	B0882PCBDC
Best Sellers Rank	#47,730 in Car & Motorbike ( See Top 100 in Car & Motorbike ) #28 in Terminals (Car & Motorbike)
Brand Name	Ampper
Colour	1 Set
Connector Gender	Male
Connector Type	Clamp
Contact Material	Brass
Customer Reviews	4.5 out of 5 stars 1,197 Reviews
Insulation Material	Non-Insulated
Insulation Material Type	Non-Insulated
Item Dimensions L x W x H	10.2L x 1.5W x 6.4H Centimeters
Item Weight	4 Ounces
Manufacturer	Ampper
Material	Brass
Material Type	Brass
Maximum Voltage	12 Volts
Model Number	Am-CBT0805
Number of Items	1
Part Number	Am-CBT0805
Terminal	Clamp Terminal
Terminal Type	Clamp Terminal
Unit Count	1.0 Count

Reviews

H**S

Good but too hard

Heavy material, good for price comparatively

16.04.2026

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