Would this bulb work for a 5 cell flashlight ? 7.5v

I doubt it seriously. These are like miniature night light bulbs. I got these to replace the incandescent bulb used in a rock crystal lamp. Very low light output.

Are they dimmable (thru a rheostat)? [Using 3 AA batteries/1.5v]

Lowering the voltage will dim the bulb, tho I don't know how well a r/stat would work ? (on a DC lamp) at such a low voltage, and almost no amps !

will these work in a 6v lantern?

I ordered this bulb specifically for an old lantern that uses the recrangylar 6v battery. They DO NOT work in the lantern I have. The old bulb works so I know the battery is good. The base is bottoming out as well. Not sure why it will not work. Tried both new bulbs as well.

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Ruiandsion 2pcs 2W COB 3V E10 Base LED Upgrade Bulb Replacement for Flashlights Torch LED Light, White

Ruiandsion 2pcs 2W COB 3V E10 Base LED Upgrade Bulb Replacement for Flashlights Torch LED Light, White

Product ID: 206137773

Details

Brand
Ruiandsion
Light Type
LED
Special Feature
Super Bright
Wattage
2 watts
Bulb Shape Size
B9

💡150 lumens super bright

🔄360° full beam angle

🔋2W ultra low power

฿1003

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Description

💡 Upgrade your glow game—see more, strain less!

360 RADIANT GLOW - COB LED technology ensures an even, all-around beam for consistent illumination in any direction.
PLUG PLAY UPGRADE - Fits standard E10 bases with no wiring hassle—breathe new life into your classic gear instantly.
COOL SAFE OPERATION - Runs cool to the touch, protecting delicate plastic housings and preventing burns—ideal for hobbyists and professionals alike.
ENERGY SMART BRILLIANCE - Consumes just 2 watts while delivering the equivalent of a 10W incandescent bulb—save power without sacrificing light.
ILLUMINATE EVERY DETAIL - 150 lumens of crisp, eye-friendly brightness perfect for precision tasks and vintage flashlight upgrades.

The Ruiandsion 2pcs 2W COB 3V E10 LED bulbs deliver a powerful 150-lumen output with ultra-efficient 2W power consumption. Designed for negative ground devices, these bulbs offer a full 360° beam angle and cool operation, making them perfect replacements for vintage flashlights, soldering lamps, and decorative lighting. Easy to install with a standard E10 base, they provide long-lasting, energy-efficient illumination that revitalizes old gear with modern LED performance.

Specifications

ASIN	B07RR874MP
Additional Features	Super Bright
Beam Angle	360 Degrees
Best Sellers Rank	#61,020 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1,315 in Handheld Flashlights #3,000 in LED Bulbs
Brand	Ruiandsion
Brand Name	Ruiandsion
Bulb Base	E10
Bulb Shape Size	B9
Color	White
Color Rendering Index	80
Color Temperature	6000 Kelvin
Connectivity Technology	Normal bulb
Control Method	App
Controller Type	Push Button
Customer Reviews	3.9 out of 5 stars 128 Reviews
Efficiency	75 lumens/watt
Incandescent Equivalent Wattage	10 Watts
Indoor Outdoor Usage	Outdoor
Item Dimensions W x H	0.47"W x 1.22"H
Light Color	White
Light Source Operating Life	50000 Hours
Light Source Type	led
Light Source Wattage	2 Watts
Light Type	LED
Manufacturer	Guangzhou Ruixin Lighting Technology Co., Ltd.
Manufacturer Part Number	FHE10-COB-2W-Hua-W-3V*2
Manufacturer Warranty Description	1 year.
Material Type	copper
Model Name	E10
Model Number	E10
Number of Items	2
Package Quantity	1
Power Consumption	2 Watts
Power Source	DC power supply
Shape	Bulb
Special Feature	Super Bright
Specific Uses For Product	Flashlight, lighthouse
Specification Met	Meets Energy Efficiency Standards
Style Name	3V
Theme	Portable Lighting
Unit Count	2 Count
Wattage	2 watts
White Brightness	150 Lumens

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฿1003

Duties & taxes included

In stock

Sold byAmazon ThailandDelivered 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 Thailand.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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1 week ago

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