I have T7 with 519A 5000k.
I like it but when I measure current compsumtion with power supply I measured that output on 14500 is not stabilized, it works in fet driver style and output is ralated to voltage.
On 4.2 volts it pulls about 3 amps which is much more than 1.5 amps in description.
I better like buck/boost drivers in T3 or T6.
3 Thanks