Patrik Bachan

Well, I see 5V regulator only. 5V ARM MCUs are quite rare (not cheap). I *guess*, It's some 8bit MCU, maybe 8051 based. Because they are cheap.

~~It's N-channel mosfet transitor used in boost part of smps.~~ As discovered later, it's in buck part of smps, so Pmos.

You can find links to schematics of several chargers in readme section [useful materials](https://github.com/stawel/cheali-charger#useful-materials). They are all practically same. ~~Eg. It's VT16 - IRF7413 in [imax B6 schematic](http://www.rcgroups.com/forums/showatt.php?s=df7049bcbafdb5d7d06765c264e5c4bb&attachmentid=3693125&d=1293732709)~~ Eg. It's...

@pitfok86 @keskin10 how did you manage to destroying it? Was it with stock FW or cheali?

That does not make sense. Adaptor current value is maximum it can deliver befor it starts limiting output voltage. My power source for chargers is 12V 60A and that's not...

Damn, I did not notice, there is space between that transistor and DC- polygon. As it is not in boost, but it's buck part of smps, IRF7413 won't do the...

Hmm, MCU itself is supported but PCB seems unfamiliar. Can you take well lit and focused photos of PCB? Ideally that all chip markings are readable (these can be multiple...

If it has same mcu as in photo above, then it's not supported.

Typical Lixx cells have minimal amount of energy below 3.0V. It's not worth to discharge cells so deeply.

Yes they have 2.5V cutoff. I am just saying, it's not worth to discharge cell so deeply. Eg. Sony VTC5A (2.0 V cutoff) has less than 4% SOC at 3V...