Samson wrote:I thought I understood how a Cell Log 8M connected to a battery pack (40 Volts) from reading the rather vague PDF manual but while connecting one using pins 1 and 9 I heard a spark and the cell log would not power up. The polarity was + on pin 9. The manual for the CD appears to show the full pack voltage connected between pins 1 and 9 so I do not know what caused this. The unit will power up with the USB power connected but when I opened it up it looks like a component near the pins has blown open. I have another unit but I am reluctant to try it until I understand the cause of the problem. Perhaps I misunderstand how it connects. The Cell log was new. Any ideas?
Manual says maximum voltage is 43v, so seems like it should have been OK.
If you connect pins 1 and 9 only, it will alarm on the unconnected channels. If you connect to pins 1 and 2, it should read the pack voltage.
Not sure why you got a spark and it died. Reversed polarity would do it.