/diy/ - Do It Yourself

>>2406810
>chinesium BMS with no DS
>chinesium charger with no DS
>1 motherfucking amp LED strip
OK, so first of all when you apply power to this circuit, you may want to do so outdoors away from other flammable materials. The 18650's aren't chinesium, r-right?

As to the strip, I would definitely consider constant current. With constant voltage being sourced to the strip small variations in output voltage due to self-heating, etc could cause wide swings in current, possibly enough to overload the strip, which if this is from China probably means it'll unironically light on fire. If your control loop is for current rather than voltage, you'll have way more control and can even change the brightness to some extent. A hack if you don't want to go full switched mode CC(P) supply is to keep your buck reg then have an LDO with a huge heat sink to drop those last few 100mV to keep the current stable. You can use a small current sense resistor for the LDO ref/adj pin instead of a voltage divider, many LDO's have in their DS (get one with a DS) example circuits for doing this.