I have (had) a fully working BMS battery Alloy shell charger. Been using it for a few years, no issues.
I need to know which direction to turn the current adjustment pot to reduce the current..and I can't test it as I seem to have killed it
I had turned its voltage down and current up when I first bought it.two years ago. Originally it was set to about 1770 Watt and i had adjusted it down to about 1500 watts. It was 148 volt 12 amp, I adjusted it to 83 volt and 20 amps.
It has been perfect ever since ...till a day ago when I thought I'd 'up' the power a bit, at least get it back to about 1700 watts, so I brought the current up a bit.
No problem it worked fine while the battery was under charge But after I fully discharged the battery and putin back on yesterday..bang. the mains plug fuse blew, the ring main and the main home CB' all tripped.
Looks like the input bridge rectifier has shorted, two diodes are now direct short, one from positive to an AC pin and the other is the negative out to the other AC pin
So before I even start to attempt a repair, I really need to know which direction to turn the pot to reduce the current again.
In the pictures below it is Pot number 4,
1......LED Red/ Green W501
2......Voltage W0411...I think, hidden under white 'gloop'
3......Current End of charge W401
6......DISPLAY CALIBRATION CURRENT
7......DISPLAY CALIBRATION VOLTAGE