Forum Discussion
jrnymn7
May 29, 2015Explorer
MEXICOWANDERER wrote:
Could a soft start circuit be of any value with the thermistor issue?
I have no idea? It seems to be a combination of ac inrush and how much load is applied... at least that's what I've gathered from discussing this with BFL. But so far, connecting to the bank 15 minutes after powering up the pm4b-45 appears to have no ill effect... but I do need to inspect the T, to be sure. And that may be with an upgraded T?... so I need to do as BFL said, and find out exactly what T is in this thing.
And then there's the pm3-75 which I have not tried charging with, yet. So it may not respond well to my waiting 15 minutes, and then connecting to the bank? But I'd rather take the better-safe-than-sorry route, and look into upgrading its T before trying it.
The thing is, as long as the bank is depleted deep enough, Vbatt remains well below Vabs during boost, anyway, so the whole 15 minute +1v boost thing isn't an issue. However I do not normally cycle my batts that deep. And I'm still not exactly sure at what dod Vbatt will rise above my Vabs setting during boost.
The bank is down to 66% at the moment, so I will be doing an overnight charge tonight. I'm pretty sure that's low enough to make the 15 min boost issue moot, so I'll fore-go waiting the 15 minutes before connecting the bank. I do know it's an issue in the 75%+ range, though.
Anyhoo, that in no way answers your question :(
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