Converter In-Rush Thermistors etc, UPDATE -4
UPDATE on 17 Nov, Update 2 on 22 Nov, Update 3 on 16 Jan 14, Update 4 on 19 Oct 14. --------------- In a recent thread there was mention of how you can wreck your gizmo (in my case a converter) ...
Forum Discussion
Success (so far)
Camping again this week similar to last November's effort, so a chance to try out the two 100 ampers with their new thermistors.
Procedure is clamp on first, no hot restarts. Three recharges in three days with batts low enough to accept 100amps for a time. One charger starting and run briefly, then shut down and the other charger started to finish the recharge. Taking turns each day which one starts first.
Both ran perfectly, no smoke. After each did three runs took their lids off to inspect their thermistors. Like new, no cracks or pieces fallen off like before.
Conclusion has to be that within reason for specs, it doesn't matter so much which thermistor is used. (Different ones in each charger remember, and none the same as in the latest production 100s---as covered in the thread earlier.)
The problem must have been the hot restarts and also by not clamping on first, which acts like a hot restart in a way. Only slight worry left is that there is no way to know if any of the starts in this series was at the point in the cycle where you get the max in-rush, so it may be they have not been really tested hard yet. Ignoring that :) I am declaring the problem solved. Thanks again everyone for the good advice and education on this topic.
Camping again this week similar to last November's effort, so a chance to try out the two 100 ampers with their new thermistors.
Procedure is clamp on first, no hot restarts. Three recharges in three days with batts low enough to accept 100amps for a time. One charger starting and run briefly, then shut down and the other charger started to finish the recharge. Taking turns each day which one starts first.
Both ran perfectly, no smoke. After each did three runs took their lids off to inspect their thermistors. Like new, no cracks or pieces fallen off like before.
Conclusion has to be that within reason for specs, it doesn't matter so much which thermistor is used. (Different ones in each charger remember, and none the same as in the latest production 100s---as covered in the thread earlier.)
The problem must have been the hot restarts and also by not clamping on first, which acts like a hot restart in a way. Only slight worry left is that there is no way to know if any of the starts in this series was at the point in the cycle where you get the max in-rush, so it may be they have not been really tested hard yet. Ignoring that :) I am declaring the problem solved. Thanks again everyone for the good advice and education on this topic.
