And here comes another question :person_facepalming:
4S means all battery insert the same direction right….?
Mine is 2 in 2 out so I would assume that’s 2S2P?
Besides the driver swap, an important consideration is whether you’re working on a early version 1 or a later version 2 MF01.
Version 1 has 6 wires going to the leds and uses 6 volts.
Version 2 has 2 wires going to the leds and uses 18 volts.
If it’s version 2 you will have to cut traces on the mcpcb and add some wires to get it to accept 6v. This extra work for version 2 has to be factored in.
There is only one place selling them, IMR Batteries in Houston, and they are $18 each. Shipping was $11 for 2 of them according to DBCUSTOM. So not cheap, at least for right now.
That's a ton of power from even a single cell. May have to wait until next week and I am not seeing a button top so some solder blobs and these should prove to be trying to find somewhere to get my hands on a few dozen.
His FET driver is cheaper and higher power than his buck version. But I chose the buck version because I wanted to be able to maintain the lumens even on non full batteries.
Since I don’t configure the UI, the controls feels the same to me. I like it simple ramping like that.
Led board = mcpcb?
3S = the mcpcb is 3S6P so it needs 9 volts?
So the buck driver is 12v to 9v?
I thought that buck driver was limited to 6A at 12v or 9A at 9v. You are getting 13.5A to the emitters at about 11 actual volts?