boost - Cheap way to power blue LED on coin cell - Electrical Engineering Stack Exchange
Litt Industries 350 Lumen Maglite LED Bulb & Lens KIT for 2-6 Cell
Tri-Color LED Breakout Quickstart Guide - SparkFun Electronics
The Crazy But Able Guide to LEDs | Crazy But Able
Maglite LED upgrade 3x Cree XML2 2000+ lumens
Bright Cree LED 10W Bulb for MAGLITE® 2-Cell 3V Maglight 2.7-3.3V Upgr – Draco Products
Maglite LED Conversion Kit for 2,3,4,5,6 D cell and C cell Maglights Flashlights
Bright Beam 2D Cell LED Heavy Duty Safety Flash Light Lightweight, Anti-Roll Durable, Rugged, Emergency, Home,Work Job Site Torch Light: Science Lab Emergency Response Equipment: Amazon.com: Tools & Home Improvement
Celluma POD | Portable Hand-Held LED Light Therapy Device
ML300L LED 6-Cell D Flashlight - Chipboard Box – Maglite
Nite Ize High Power LED Upgrade - LED Light Bulb for C and D Cell Flashlights - 74 Lumen Replacement Upgrade Bulb for Soft White Light - White - Amazon.com
LED 5W Cree 390 Lumen Bulb for MAGLITE® 3-Cell Flashlight 3.6V 4.5V – Draco Products
Blue LED Dies Rapidly on 9v Battery but OK on CR2032 Lithium Coin Cell - YouTube
Wire Light LED Strand - 10 Warm White LEDs + Coin Cell Holder : ID 893 : $4.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Lit Industries 350 Lumen 2-6 Cell Maglite LED Upgrade Bulb & Lens Kit C & D Model (2-6 Cell Bulb and Lens Kit) - Amazon.com
CELL LED – lamaconcept
The difference between solar cells and LEDs
Fantado CR2025 Coin Cell Batteries for LED Lights and Remote Controls (5 Pack) by PaperLanternStore - Walmart.com
ArcSystem Pro One-Cell LED
High Power LED Upgrade
How to Make a Light-up Card : 10 Steps - Instructables
Remote Controlled 5 LED Multi-Color Submersible LED Light
3,500 Lumen 3x Cree XHP50.2 LED Conversion bulb kit for Maglite Flashlights 5-6 D cell upgrade