Over the past weeks the battery voltage slowly increased to 14.5v where I disconnected the 'unregualtord - 12v' wall-wart and let the battery rest for two days. It settled to 12.45v and here is what the scope looks like today:
|After 19 days|
Contrast this to what the waveform looked like when I 1st connected the Pulse Power unit:
Both show a 4v / 100nS pulse - but I do notice the ringing after the pulse has reduced vs. when 1st connected.
So what does this mean? I have no idea... It is clear something has changed - but what I can not say. The 12.45v settled battery voltage is indicative of a 80% charged state - but then this is the exact same place the battery was before doing any of this 12.45v (abit, after only a 3hr rest which is a little short - so this is a bit of Apples and Oranges here).
I will keep the battery on the pulse power unit, and connect and disconnect the wall-wart to keep Vbat under 14.6, for another week. Then I am taking the Pulse Power unit with me back to Viking Star for my 10 days work session. If I have time before leaving, will see if we can give this battery a test in the truck - the starter test. Cause remember, it was hopeless when I 1st got it..