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Sharmman02/02/2022
-- SST-40 version 5000K --
Measured 8,6A max using the highest drain 21700 Samsung 30T (2,15A per SST-40) and found 4000Lm max with 44KCd at cold start and 9° flood angle (Note that 7000Lm require at least 16A current draw of 4 x SST-40 in parallel).
If a single SFT-40 & reflector had been used at same current flashlight would had exceed 150KCd.
7135+direct mosfet (WMB023N03 of 4mR RDs(on)) topology is used with TP5100 2A buck USB charger controller that define it as 4000Lm flood EDC flashlight for your walk but nothing close to what vendor advertise that's why it get 4 stars.
SharmmanActuallymine was defective and refunded 'cause one led's copper strip caused short circuit with flashlight body in a while , so I really don't know if my review is representative for good working batch of this flashlight ...
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