Can this hook up directly to a Battery rather than using the 7 Pin adapter?

Yes you can. The 7-pin plug that comes with this model tongue jack uses the Tow vehicle's electrical protection (typically a 20a or 30a fuse), and hence it is not built in to the jack design itself. So Yes you can connect to your trailer battery, but you'll need to install a home made pig tail wired into the trailer battery. It will consist of 1: 7-pin female receptacle 2: a 30a fuse on the 12v+ side for electrical protection. This would allow you to use either the tow vehicle or the trailer battery. This is the option I prefer. Here's links to the parts you'll need : Female 7 pin trailer connector: https://www.amazon.com/CURT-58150-Vehicle-Side-Trailer-Connector/dp/B001EP0G72/ref=sr_1_4?crid=HP2P878QP1E5&keywords=7+pin+female+trailer+connector&qid=1581199279&sprefix=7+pin+femal%2Caps%2C226&sr=8-4 inline fuse holder (and you'll need a 30a blade fuse to go in the fuse holder.): https://www.amazon.com/Fastronix-Automotive-Marine-Weatherproof-Holder/dp/B01LWNVT61/ref=sr_1_6?keywords=inline+30a+fuse+waterproof&qid=1581201609&sr=8-6 You'll also want some 12 gauge wire and 10-12 Gauge Watertight Heat-Shrink Butt Connectors to build the pig tail. Typically Black or Red wire is used on the 12v+ side and white wire is used in the 12v- going to the battery. Here's a good video to watch to get an idea of how to install. (he says 10 guage wire but that is overkill - it's 14 gauge on the motor, so... that's why I say 12 gauge wire should be just fine) (also he installed a switch in his junction box, which imo is unnecessary because there is already an up/down switch on the jack already. https://www.youtube.com/watch?v=HCZ-4TGVSFQ If you never want to use the tow vehicle to raise/lower... they sell a less expensive model which is designed to power through the trailer battery. These models typically come with a 30a inline fuse, and/or a 30a resettable breaker (possibly both). These models often come with only 1 wire for the 12v+ and uses the trailers frame for the ground connection. The models that come with the 7 pin plugs to use the Tow vehicle have 2 wires. The 12v+ wire is typically connected to pin# 3 (tow vehicle's running lights - requires lights on in order for jack to work - often only has 20a fuse, which is not enough imo). It could also be connected to pin #4 (which is the AUX 12v+ charging circuit. I'm not sure what the fuse protection is on that... hopefully it's 30a). The ground (12v-) is usually on pin# 1. Here's a link to the 7-pin trailer wiring schematic https://i.pinimg.com/originals/fa/3b/f1/fa3bf1ae1f23192fd0d63b829905eb90.jpg Hope this helps.

Does the light have its own off on switch?

Yes there’s a button separate.

What is the warranty for this product?

I think it’s a year. I bought one for Christmas and it quit working. Contacted the company and they sent someone to pickup my old one and is shipping a brand new one.

Load Capacity	5000 Pounds
Maximum Lifting Height	31.5 Inches
Brand	Uriah Products
Color	Black
Style	Aluma-Tow UC500010 Electric Trailer Jack 5000 lbs., Electric Power Tongue Jack with 7-Way Connector 12V DC, Waterproof Cover & LED Light & Manual Crank Handle, 9"-31.5" for Lifting Trailers, Campers & RVs
Automotive Fit Type	Universal Fit
Manufacturer	Uriah Products
UPC	805089500119
Global Trade Identification Number	00805089500119
Model	Uriah Products UC500010 Electric Trailer Jack (7-Way Connector, 5000 lb. 12V DC)
Item Weight	22.3 pounds
Item model number	UC500010
Manufacturer Part Number	UC500010
Bulb Type	LED

Uriah Products Electric Trailer Jack with 7-Way Connector, 12V, 5000 Lbs Lift Capacity - Heavy-Duty Stabilizer for RV, Boat, Utility, and Off-Road Vehicles

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