What is the actual length of the charging cable? Need to know how far away I can place the panel from the battery

The main cord is 8ft. long with the the two connecting cords, ie, one to use when connecting to the battery and one to use when connecting through the cigarette lighter are about 15" each. I'm sorry it took so long to answer your question, it has been raining and my van isn't under cover. Hope this helps you.

Can i just connect the black and red clamps directly to an electric fence? Or do I need anything else?

You just need to connect the sun to the alligator clips to the battery and the other end sae head to the solar panel.

can I use this for light in my barn

You could if you connected it to a small 12v battery and used some of the 12 LED retrofit light kits they use for the interior of cars or an 12v led strip. I'd suggest maybe a 12v CCTV battery to make it affordable. Unless you are talking about large amounts of light, then you probably would be better off with some kind of pre-made solar light kit.

Does this unit have a charge profile controller for lead acid batteries, they prevent over charging & shut down the current as battery approaches 12v?

It has no controller. But if you charge small batteries, you need a controller. If you charge a large battery, you don't need a controller because its current is relatively small and it won't cause overcharging.

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POWOXI 7.5W 12V Solar Battery Charger Trickle Maintainer Kit for Car

Product ID: 91063792

Details

Brand
POWOXI
Color
Solar Powered
Item Weight
2.2 pounds
Output Voltage
12 volts
Product Dimensions
14.76"D x x

🔋Smart charge controller with 25-30% energy conversion

☀️7.5W high-efficiency solar panel

🛡️Built-in multi-layer battery protection

¥19058

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

☀️ Charge Smarter, Drive Confidently — Stay Powered, Stay Ahead!

PLUG PLAY CONVENIENCE - Simple installation via cigarette lighter or alligator clips—no mechanic needed, just instant battery care.
UNIVERSAL COMPATIBILITY - Perfect for cars, motorcycles, boats, RVs, and more—never get stranded with a dead battery again.
INTELLIGENT SAFETY FIRST - Advanced smart controller prevents overcharging, short circuits, and voltage spikes for worry-free maintenance.
EFFORTLESS SOLAR POWER BOOST - Harness 7.5W of premium solar energy to keep your 12V battery topped off anywhere, anytime.
RUGGED WEATHERPROOF DESIGN - High-strength tempered glass and ABS+PC frame ensure durability against impact, wind, snow, and scratches.

The POWOXI 7.5W 12V Solar Battery Charger is a robust, waterproof trickle maintainer designed for a wide range of 12V batteries. Featuring a high-efficiency solar panel with up to 30% energy conversion, an intelligent charge controller with built-in safety protections, and a durable tempered glass and ABS+PC frame, it ensures safe, maintenance-free charging. Easy to install via cigarette lighter or alligator clips, it’s ideal for cars, motorcycles, boats, and more, backed by CE certification and a 12-month warranty.

Specifications

ASIN	B07JLWFPX6
Amperage	2.4 A
Best Sellers Rank	#1,257 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #1 in Solar Battery Chargers & Charging Kits
Brand	POWOXI
Built-In Media	1 X 7.5W Solar panel +1 X Cigarette lighter+1 X Alligator clip+1 X Manual
Color	Solar Powered Battery Chargers 7.5w-B
Compatible Devices	various vehicles and batteries
Connector Type Used on Cable	SAE to Cigarette Lighter
Current Rating	0.41 A
Customer Reviews	4.4 4.4 out of 5 stars (6,484)
EU Spare Part Availability Duration	10 years
Input Voltage	12 volts
Item Dimensions D x W x H	14.76"D x 1.89"W x 9.06"H
Item Highlight	Smart Charge Controller \| Waterproof \| Intelligent Safety Protections \| for Boat, Marine, RV, Automotive, Motorcycle, Trailer
Item Type Name	7.5W Solar Battery Trickle Charger Maintainer
Item Weight	2.2 pounds
Manufacturer	POWOXI
Mfr Part Number	Solar Powered Battery Chargers 7.5w-B
Model Number	ABS Solar 7.5W
Number of Items	1
Number of Packs	1
Number of Ports	2
Output Voltage	12 volts
Specification Met	CE
UPC	674551471819
Unit Count	1 Count
Warranty Description	1 year

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