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-Solar-Battery-Trickle-Charger-Maintainer -12V Portable Waterproof Solar Panel Trickle Charging Kit for Car, Automotive, Motorcycle, Boat, Marine, RV, Trailer, Powersports, Snowmobile, etc.

Product ID: 360905535

Details

Brand
POWOXI
Colour
Solar Powered
Item Weight
998 g
Output Voltage
12 Volts
Product Dimensions
375D x 48W x

💧Waterproof & weather-resistant design

🔋Smart 12V battery maintainer

☀️7.5W high-efficiency solar panel

¥30597

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

☀️ Keep your ride powered & ready—solar smart, hassle-free charging!

RUGGED WEATHERPROOF - High-strength tempered glass and ABS+PC frame resist impact, scratches, and harsh weather—built to last.
EFFORTLESS SOLAR POWER - Harness 25-30% energy conversion with premium solar silicon for reliable, eco-friendly charging anywhere.
PLUG PLAY CONVENIENCE - Easy installation with alligator clips and cigarette lighter adapter—perfect for cars, boats, RVs, and more.
INTELLIGENT BATTERY CARE - Built-in smart protection prevents overcharging and short circuits, ensuring your battery’s longevity and safety.
VISUAL CHARGING FEEDBACK - Dual-color LED indicators keep you informed—red for sunlight, green for active charging, so you never guess.

The POWOXI 7.5W Solar Battery Trickle Charger Maintainer is a portable, waterproof 12V solar panel kit designed to keep automotive, marine, and powersport batteries topped up effortlessly. Featuring a high-efficiency solar silicon panel with 25-30% energy conversion, a smart internal protection system to prevent overcharging, and a durable tempered glass and ABS+PC frame, it offers reliable, maintenance-free charging. Easy to install with included alligator clips and cigarette lighter adapter, it’s perfect for long-term battery maintenance across a wide range of vehicles and equipment.

Specifications

ASIN	B07JLWFPX6
Amperage	2.4 Amps
Best Sellers Rank	#410,156 in Car & Motorbike ( See Top 100 in Car & Motorbike ) #1,683 in Battery Tools
Brand Name	POWOXI
Cable Length	8.7 Inches
Colour	Solar Powered Battery Chargers 7.5w-B
Connector Type Used on Cable	SAE to Cigarette Lighter
Current Rating	0.41 Amps
Customer Reviews	4.4 4.4 out of 5 stars (6,445)
EU Spare Part Availability Duration	10 Years
Input Voltage	12 Volts
Item Dimensions D x W x H	375D x 48W x 230H Millimeters
Item Type Name	7.5W Solar Battery Trickle Charger Maintainer
Item Weight Unit of Measure	998 g
Manufacturer	POWOXI
Manufacturer 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, RoHS
UPC	674551471819
Unit Count	1 Count

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¥30597

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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