Do these bulbs produce heat? Need for keeping chicken water from freezing in winter, so I need heat similar to regular bulbs. Thanks for any help.

No. You can touch them without burning your hand while on. Very minimal heat production. From a science perspective, the energy you save from using LED lighting is mostly from the lack of heat production. I estimate you would need about 8-9 of them to match the heat of one 60w regular bulb.

If using 12V DC is the tip positive or does it matter?

If its DC its Always polarity sensitive -- usually the center tap is positive and the screw part is negative An LED has a Cathode (-) and an Anode (+) which if reversed wont allow enough current flow to light up. AC power is non polarized with black being hot, white being common, and green being earth ground AC means Alternating Current meaning black and white change polarity in the U.S. at 60 times a second 60hz

Does polarity matter? DC positive to which part of bulb?

This 12Volt 24V low voltage E26 led bulb is with non-polarity design. For your DC power source, you can light up it by screwing the led bulb into the E26 socket.

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12V LED Light Bulb 7W 630Lm AC/DC10-30Volt Low Voltage E26 Base (2700K Warm White)40-60 Watt A19 Bulbs Equivalent,Landscape Garden Yard, 12volt Battery Power System Off Grid Solar Lighting,6 Pack

Product ID: 96642897

Details

Brand
LEMENG
Bulb Shape Size
A19
Light Type
LED
Wattage
7 watts

🌿2700K warm white, high CRI 85

💡7W power, ultra-efficient

🔋AC/DC 10-30V compatible

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Sold byAmazon ColombiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Brighten smarter, live greener — light up your world with effortless style!

WARM HEALTHY GLOW - 2700K soft warm white with CRI 85+ ensures eye-friendly, flicker-free illumination that feels natural and inviting.
ENERGY SMART BRILLIANCE - Replace bulky 40-60W halogens with just 7W, slashing your power bill without sacrificing brightness.
PLUG PLAY CONVENIENCE - E26 base fits standard fixtures easily—upgrade your lighting setup in minutes and join the eco-conscious lighting revolution.
BUILT TO LAST DESIGNED TO SAVE - Advanced heat sink and premium driver extend lifespan up to 15,000 hours, minimizing maintenance and replacement hassle.
UNIVERSAL LOW VOLTAGE COMPATIBILITY - Seamlessly powers from any 10-30V AC/DC source—perfect for off-grid solar, RVs, boats, and landscape lighting.

The LeMeng 12V 7W LED bulb delivers 630 lumens of warm 2700K light, efficiently replacing 40-60W halogen bulbs in low-voltage (10-30V AC/DC) systems. Ideal for off-grid solar setups, RVs, boats, and outdoor landscape lighting, it features a high CRI of 85 for natural color rendering, a durable heat sink for extended 15,000-hour lifespan, and an easy-to-install E26 base. This 6-pack offers reliable, flicker-free illumination with energy savings and a 2-year warranty, tailored for the modern eco-conscious professional.

Specifications

ASIN	B07HB7CX3N
Average Life	15000 Hours
Batteries Included?	No
Batteries Required?	No
Best Sellers Rank	#40,467 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2,710 in LED Bulbs
Brand	LEMENG
Brightness	630 Lumen
Bulb Base	E26
Bulb Diameter	2.36 Inches
Bulb Shape Size	A19
Color	2700k Warm White
Color Rendering Index	85.00
Color Temperature	2700 Kelvin
Control Method	App
Customer Reviews	4.6 4.6 out of 5 stars (2,463)
Date First Available	November 6, 2018
Efficiency	90 lumens/watt
Incandescent Equivalent Wattage	60 Watts
Indoor/Outdoor Usage	Indoor, Outdoor
Is Discontinued By Manufacturer	No
Item Package Quantity	1
Item Weight	1.92 ounces
Item model number	VES1707
Light Color	2700K Warm White
Light Output Maximum	630 Lumens
Light Source Type	LED
Light Source Wattage	7 Watts
Light Type	LED
Manufacturer	LeMeng
Material	copper
Number of Items	1
Part Number	VES1707
Power Consumption	7 Watts
Power Source	AC/ DC 12V
Product Dimensions	2.36"W x 4.41"H
Shape	A19
Size	6 Count (Pack of 1)
Sound Level	30 Decibels
Special Feature	2 years warranty, 2700K warm white, 7W 630lm Led light bulb for 40-60W halogen replacement, AC/DC 10-30volt, work for both 12V 24V, Not Dimmable
Special Features	2 years warranty, 2700K warm white, 7W 630lm Led light bulb for 40-60W halogen replacement, AC/DC 10-30volt, work for both 12V 24V, Not Dimmable
Specific Uses For Product	12V 24V off grid solar panel, battery, RV camper, marine boat interior lighting and low voltage landscape lighting system
UPC	749882964931
Unit Count	6.0 Count
Voltage	12 Volts
Wattage	7 watts
White Brightness	630 Lumens

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