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Convoy L21B , 21700 flashlight

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Basic introduction
Construction Material: Aluminum alloy,The surface is hard anodic oxidized
Lens type: green-coated glass lens
Reflector: made of aluminium alloy, the reflective surface is vacuum-coated.
smooth
LED MCPCB: made of copper.
DTP thermally conductive structure.
3.0 W/(m·K) thermal grease below the MCPCB.
Head structure: integrated type (Best structure for conducting heat, but please note that fast heat transfer does not mean fast heat dissipation, which depends on the surface area of the flashlight.)
Switch: reverse type, Au-coated phosphor copper spring soldered on the PCB, it can bear max 10A current ,no need to add bypass.
[exception: L21B SBT90.2 has double springs on the switch and the driver]
[exception: L21B XHP70.3 HI with 6V 8A boost driver has double springs on the switch]
Tail: The edges are chamfered. The U-shaped groove makes it easy for the thumb to click the silicone button. The single-sided double rope hole makes the rope not affect the handstand of the flashlight.
Electro&optical parameters Driver output: 3V 6A linear for SST40 , KW CSLNM1.TG , KW CSLPM1.TG , KP CSLPM1.F1
3V 8A buck for SFT40 , KW CULPM1.TG , GT LED
3V 18A FET for SBT90.2
6V 5A boost for XHP70.3 HI (This refers to the regular 4modes / 12groups)
6V 8A boost for XHP70.3 HI
6V 2.4A boost for 719A
2.5V 2.5A buck for KR CSLNM1.23
Driver efficiency: 85%-95%
Mode: See below for details
Flux: ?
Illumination distance: ?(estimated by the naked eye,  data for reference)
? (ANSI standard)
Runtime: ?
Related features Low voltage warning: Yes
Reverse polarity protection: Yes
Mode memory: Yes, 
Temperature control function: Yes , As the temperature rises, the current will drop slowly, but this does not mean that the surface of the flashlight will not heat up.
Tailstand: Yes
About the battery Battery included: No
Required battery type: unprotected 21700 lithium battery (Please select the 21700 lithium battery with matching performance according to the output current of the driver circuit)
Required battery quantity 1 piece
Size & weight Length: 170.5mm
Diameter: Head 62.6mm , Body 26.1mm
Weight: net weight 212g 
gross weight 247g 
Accessory: 1* lanyard

4 modes:
0.3%-3%-30%-100%

12 groups:

1.click the switch to turn the flashlight on/off,tap the switch to select mode

2.if flashlight is turned on,tap the switch 20 times quickly to enter into config mode.(On a visual interface,as long as you click on an option, it means that the option is selected. The flashlight has no visual interface. It flashes to represent an option, and "tap the switch in the flashing process" means to select the option.)

   Option 1 (normal-flash 1 time + buzz-flash): tap the switch to enter into sub-option to select the mode group,If the user has no operation, the config mode will enter option 2.

       -------------sub-option 1.1 (normal-flash 1 time) : tap the switch to select mode group 1 (0.1%, 1%, 10%, 35%, 100%, strobe, biking, battery-check)

       -------------sub-option 1.2 (normal-flash 2 times) : tap the switch to select mode group 2 (0.1%, 1%, 10%, 35%, 100%)

       -------------sub-option 1.3 (normal-flash 3 times) : tap the switch to select mode group 3 (100%, 35%, 10%, 1%, 0.1%)

       -------------sub-option 1.4 (normal-flash 4 times) : tap the switch to select mode group 4 (1%, 20%, 100%, strobe, biking, battery-check, SOS)

       -------------sub-option 1.5 (normal-flash 5 times) : tap the switch to select mode group 5 (1%, 20%, 100%)

       -------------sub-option 1.6 (normal-flash 6 times) : tap the switch to select mode group 6 (100%, 20%, 1%)

       -------------sub-option 1.7 (normal-flash 7 times) : tap the switch to select mode group 7 (0.1%, 1%, 10%, 50%, strobe, biking, battery-check, SOS)

       -------------sub-option 1.8 (normal-flash 8 times) : tap the switch to select mode group 8(0.1%, 1%, 10%, 50%)

       -------------sub-option 1.9 (normal-flash 9 times) : tap the switch to select mode group 9 (50%, 10%, 1%, 0.1%)

       -------------sub-option 1.10 (normal-flash 10 times) : tap the switch to select mode group 10 (1%, 10%, 35%, 100%)

       -------------sub-option 1.11 (normal-flash 11 times) : tap the switch to select mode group 11 (100%, 20%, strobe)

       -------------sub-option 1.12 (normal-flash 12 times) : tap the switch to select mode group 12(100% only)

   Option 2 (normal-flash 2 times + buzz-flash): tap the switch to active the mode memory or inactive it,If the user has no operation,flashlight will enter into the last mode. 

 

battery-check instructions:

 <2.95V   1 flash,

2.95-3.25V 2 flashes,

3.25-3.55V 3 flashes,

3.55-3.85V 4 flashes,

>3.85V    5 flashes

5 groups [ without mode memory ]
1.click the switch to turn the flashlight on/off,tap the switch to select mode
2.if flashlight is turned on,tap the switch 20 times quickly to enter into config mode.
       -------------sub-option 1.1 (normal-flash 1 time) : tap the switch to select mode group 1 (100%)
       -------------sub-option 1.2 (normal-flash 2 times) : tap the switch to select mode group 2 (100%-20%)
       -------------sub-option 1.3 (normal-flash 3 times) : tap the switch to select mode group 3 (100%-strobe)
       -------------sub-option 1.4 (normal-flash 4 times) : tap the switch to select mode group 4 (20%-100%)
       -------------sub-option 1.5 (normal-flash 5 times) : tap the switch to select mode group 5 (strobe-100%)