This item is for 1 cell battery setups. Mainly for the Surefire E1, E1e Flashlights.  But this LED head could be used on E2, E2e and other 2 cell E Series lights when using 1 x 16650 or 1 x 17670 3.7V rechargeable battery. 3 Mode Version

New KL1 Style 850 Lumens Version. (March, 2023)

New Nichia 519A, 5700K LED LED!

Higher Output and Efficency! New LED and brand new circuit board! 

Bolt on conversion head unit for Surefire's E Series Lights fully reversible direct bolt-on.

Please note that this is the Cool White Version.

Nichia Neutral White 4000K 80-CRI Version available here:

https://www.ebay.com/itm/226002926395

Nichia Warm White 3000K R9080 90+CRI Version available here:

https://www.ebay.com/itm/326009960189

HA3 Natural Coloured Version also available:

https://www.ebay.com/itm/226002941132

E Series KL1 Style LED Head Unit (3 Mode)

(2.7V-4.5V Regulated Input, Constant Output)

-High Output Nichia 519A LED (Max Output 850 Lumens)
-2.7V-4.5V Regulated Input for Maximum Flexibility
-3 Mode (5%-30%-100%) with Memory
-Maximum Current Input to LED at 1600mA
-Cool White, Cool Colour Temperature (5700K)
-Reverse Polarity Input Protection
-Over-Discharge Protection
-HA3 Black Anodizing on the Head Unit
-Aluminum HA3 Black Bezel
-Optical Coated UCL Tempered Glass Lens
-Constant Output
-Unique Reflector Design
-Precision Machined Aluminum Reflector
-High Temperature Resistant Light Orange Peel Coating
-Every Reflector Module is Pre-Focused for the Ultimate Spot

***This is a multi mode module, it is not recommended for tactical use due to the inability for momentary operations.***