As soon as i connect to a car battery the lights turn off. When i disconnect it from the battery the charging lights come on on the controller.???

Mind did the very same thing. It end up being the wires coming from the controller to the battery. I ran the black wire from the controller to the plus side of the batter and the red to the negative. The green light turned off and the red light stayed on. I know the battery isn't fully charged, so I think the problem maybe solved.

Is the controller waterproof &, therefore, can it be mounted exposed to the elements?

I can confirm that the controller is not waterproof. I have used it without incident for a year, then forgot and left it out in the rain. I can't revive it, even after cleaning the PCB with rubbing alcohol.

Can other brand solar panels (2 x 20w) be joined with this one prior to the charge controller with the proper SAE pigtail?

Yes, you can do that. The total power of solar panels should be within 100w.

Will this run and bank (recharge from night use) enough energy for my rv furnace and pump?

How much energy does your RV use in one night? The panel produces 20 Watts in strong sunlight, figure 5-6 hours of good sun in a day, that"s approx 100 watt hours of energy. if your RV uses more than that in one night, the answer is no. If it uses less than 100 watt hours, then the answer is yes

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SOLPERK 10W Solar Panel，12V Solar Panel Charger Kit+8A Controller，Suitable for Automotive, Motorcycle, Boat, ATV, Marine, RV, Trailer, Powersports, Snowmobile etc. Various 12V Batteries. (10W Solar)

SOLPERK 10W Solar Panel，12V Solar Panel Charger Kit+8A Controller，Suitable for Automotive, Motorcycle, Boat, ATV, Marine, RV, Trailer, Powersports, Snowmobile etc. Various 12V Batteries. (10W Solar)

Product ID: 152650224

Details

Brand
SOLPERK
Efficiency
High
Item Weight
2.4 Pounds
Material
Silicon Glass
Product Dimensions
13.4"L x 9.8"W

🔋8A smart charge controller

☀️21-30% conversion efficiency

🛠️360° adjustable mount

Description

☀️ Power Your Freedom with Smart Solar Energy!

BUILT TO BRAVE THE ELEMENTS - Durable tempered glass & corrosion-resistant frame withstands storms, snow, and sandstorms for 25+ years.
MAXIMIZE YOUR POWER HARVEST - High-efficiency A+ solar cells deliver up to 30% energy conversion—charge smarter, not harder.
INTELLIGENT BATTERY GUARDIAN - 8A controller prevents overcharging and battery drain, ensuring peak battery health and longevity.
VERSATILE OFF GRID POWER SOLUTION - Perfect for automotive, marine, RV, powersports & more—keep your 12V batteries topped off anywhere, anytime.
EFFORTLESS SETUP ULTIMATE FLEXIBILITY - 360° adjustable mounting bracket with plug-and-play cables means you’re solar-ready in minutes.

The SOLPERK 10W Solar Panel Kit combines high-efficiency polycrystalline solar cells with an 8A smart charge controller to safely and effectively maintain 12V batteries across vehicles, boats, and outdoor equipment. Engineered with durable tempered glass and a corrosion-resistant aluminum frame, it offers a 25-year lifespan and weatherproof reliability. Featuring a 360° adjustable mount and plug-and-play installation, this compact 13.4" x 9.8" panel delivers up to 2.4 amps of clean solar power, making it an essential off-grid energy solution for millennial professionals seeking sustainable, hassle-free battery maintenance.

Specifications

ASIN	B07TXTPDF9
Amperage Capacity	2.4 A
Best Sellers Rank	#438,231 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #122 in Solar Battery Chargers & Charging Kits
Brand	SOLPERK
Brand Name	SOLPERK
Connector Type	USB
Customer Reviews	4.4 out of 5 stars 858 Reviews
Efficiency	High Efficiency
Included Components	1 solar panel, 1 charger controller, 1 mounting bracket, 1 alligator clips, 2 screws
Item Dimensions L x W x H	13.4"L x 9.8"W x 0.7"H
Item Weight	2.4 pounds
Manufacturer	SOLPERK
Manufacturer Part Number	10W Solar Panel
Material	Polycrystalline Silicon , Tempered Glass
Material Type	Polycrystalline Silicon, Tempered Glass
Maximum Power	10 watts
Maximum Voltage	12 volts
Model Number	10W Pro
Number of Items	1
Output Voltage	12 volts_of_direct_current
Product Dimensions	13.4"L x 9.8"W x 0.7"H
UPC	674551499875

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