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: 228580791

Details

Color
1 Set
Connector Type
Top Post
Contact Material
Brass
Insulation Material
Non-Insulated
Terminal
Post Terminal

⚡Supports 12V max voltage

🔩Brass build for ultimate durability

⏱️Tool-free, direct-fit quick install

€ 27.73

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔋 Power Up with Precision & Style — Never Get Left Dead!

VERSATILE CONNECTIVITY - Perfect for battery extension, parallel connections, and grounding—power up your ride or vessel with confidence.
CLEARLY MARKED POLARITY - Positive (+) and Negative (-) terminals are laser-etched for foolproof, error-free installation.
EFFORTLESS INSTALLATION - Flange nuts and direct-fit design mean no modifications or extra tools—get connected in minutes.
UNIVERSAL COMPATIBILITY - Fits standard top post batteries (19mm positive, 17mm negative) across cars, boats, RVs, and more.
CORROSION RESISTANT BRASS CONSTRUCTION - Engineered for long-lasting strength and reliability in marine and automotive environments.

Ampper Brass Battery Terminal Connectors deliver a robust, corrosion-resistant connection for 12V top post batteries. Designed for quick, tool-free installation, these terminals fit standard automotive and marine batteries, ensuring reliable power transfer for cars, boats, and RVs. With clearly marked polarity and durable brass construction, they combine ease and longevity for professionals who demand performance and peace of mind.

Specifications

ASIN	B0882PCBDC
Best Sellers Rank	#12,229 in Automotive ( See Top 100 in Automotive ) #30 in Automotive Replacement Battery Terminals & Ends
Brand Name	Ampper
Color	1 Set
Connector Gender	Male
Connector Type	Top Post Battery Terminal
Contact Material	Brass
Customer Reviews	4.5 4.5 out of 5 stars (1,286)
Insulation Material Type	Non-Insulated
Item Dimensions L x W x H	4"L x 0.6"W x 2.5"H
Item Weight	4 Ounces
Manufacturer	Ampper
Material Type	Brass
Maximum Voltage	12 Volts
Model	Am-CBT0805
Number of Items	1
Part Number	Am-CBT0805
Terminal	Post Terminal
Unit Count	1.0 Count

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