L-1513IT | KINGBRIGHT LED 5mm Red 617nm 80mcd/10mA
Amazon.com: LED Panel Mount Indicators Dome Green 125VDC 10mA 1000fL : Industrial & Scientific
You have a red LED that you want to connect to a 12V battery. The maximum current that it's safe to put through this LED is 10 mA. How much resistance does
LEDs
LED Tester For 5mm 3mm 10mm Piranha LED Light Lamp Tester Box 10mA 20mA 40mA | eBay