Recent content by vex_zg

Magsy, any update? did you manage to squeeze in a BMS?

honya96, I have the same CSD mosfets I bought a while ago planning to replace them in the KT12 mosfet controller to get lower heating and higher power, on the paper CSD mosfets looked much better. Also I had thoughts of doubling them up to 24 MOSFET somehow, in the same controller. For this I...

I've tested my Besttech BMS and it allowed my pack to go overvoltage, to 4.25-4.3V per cell (this was for a short while, I ended this manually and I don't know when it would have stopped) I can't tell exactly why but the BMS might be counting on bleeding resistors to relieve some voltage (which...

.1mm copper is a really thin thing. Yes weldable, some people use it, but it's really weak mechanically. I'd rather use double .2mm nickel for the same conductivity. That's just my opinion, some will disagree.

Seller responded that he doesn't have any BT modules to sell now (the ones like the sample I photographed)

great work Stan with the lishui bt adapter / app. I presume the app will only work with lishui controllers, and not KT controllers?

OK, I will post here when I have reply with availability/price

I need to borrow a phone with macro, mine doesn't have it. Will do it soon. In the meantime: I asked the seller who sold me this bluetooth module if he can get more. He might be able to get some from the KT factory. Is anybody interested? I only asked because somebody here wrote BT modules...

The markings on the chip are CC2540 F256 TI65J P123 G4 If the lack of BT module is a blocker to your work I can consider borrowing you this sample.

FYI Kunteng recently issued a bluetooth adapter which plugs into the controller instead of the usual LCD3 http://www.szktdz.com/en/news_show.php?article_id=485 I managed to get a hold of one factory sample. So perhaps you can only implement this KT or CA protocol, and use one of the android...

yeah, tin sort of boils and explodes when you weld. But It's worth a try for couple of $. Zink/nickel plating of copper seems to be easy but I haven't yet had time to explore how this plating impacts welding.

I just ordered, will report in few weeks.

I am always looking if I could find a way to join but I have a baby on the way and wife watching my every step :) I am not asking about anything regen related but throttle sensitivity reduction because it's too jumpy on high currents during startup when a shunt mod has been made. So the...

I did a lot of experiments with welding copper, I have a 600Ws fully programmable spot welder, can weld copper including 0.2mm and probably thicker, but my conclusion is that for sufficient mechanical strength you need at least 0.2mm copper, but to weld 0.2mm copper you need to use power levels...

For FETs I used mouser search: lowest rds with TO-220 and Vds>=100V, those popped up. Had no idea caps can fail from heat but makes sense if they are continuously being charged/discharged. These seem low esr since big sparks go off if I short them :) There is very limited room in the casing...