how many amps is this rated for and how long is it rated for

It is rated at 5 amps continuous. It is designed to be used with a trickle charger which charges at no more than 3 amps - 12 volts. I am sure that it could handle more up to the capacity of the connector and or wires however I do not know what that would be. It is a very well made device. From your question it sounds like you plan another use for it so common sense comes into play. Good luck on your project. Harold

does this connector have a typical cap or cover over thr ends to protect from dirt/water etc?

Yes, it has a plastic cap/cover to protect the connectors... at least mine does.

Red goes to positive and does the black go to negative or it should be grounded?

Red to positive and black to negative simply because the cable fitting has a convenient bolt to securely attach it to . (Battery is grounded anyway)

will the eyelets fit the larger screws on rv gel batteries

The eyelets will not fit the terminal screw post on a regular size battery. However, they are easily changed and the effort is well worth it. I have three Interstate deep cycle batteries on my fishing pontoon and one of these units on each battery. Each battery has its own battery box. When it is charging time, just plug the charger into this pig tail and charge. No removing the batter box lid to get to the battery terminals. Great little piece of equipment. Highly recommend Big Spoodie

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⚡ Power up fast, stay charged longer!

EXTENDED REACH - 18-inch cables give you the freedom to access batteries in motorcycles, lawn tractors, and power sports vehicles effortlessly.
ERROR PROOF SETUP - Color-coded cables ensure you never mix up connections—install with confidence every time.
INSTANT POWER LINK - Hook up your Schumacher charger in seconds with the quick-connect harness—no clamps, no hassle.
TRUSTED DURABILITY - Backed by Schumacher’s legacy since 1947, this cable delivers reliable, long-lasting performance.
PLUG PLAY SIMPLICITY - Just attach the ring leads to your battery terminals and snap on your charger—battery maintenance made seamless.

The Schumacher WM-12 is an 18-inch ring connection cable designed for quick and reliable connection to Schumacher battery chargers and maintainers rated 5 amps and under. Featuring a quick-connect harness and color-coded cables, it simplifies battery maintenance for motorcycles, power sports, and lawn tractors, backed by decades of trusted Schumacher quality.

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Manufacturer	Schumacher Electric
Brand	Schumacher Electric
Model	Schumacher WM-12 Ring Connection Cable for Battery Chargers and Maintainers
Item Weight	0.8 ounces
Product Dimensions	3.9 x 2.7 x 1 inches
Item model number	WM-12
Is Discontinued By Manufacturer	No
Manufacturer Part Number	WM-12
Wattage	1 watts

Schumacher Electric 18-Inch Ring Connection Cable, for Car Battery Chargers and Maintainers, Quick Connect, for Motorcycle, Power Sport, and Lawn Tractor Batteries, WM-12

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