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Apparently, there is a 5v differential. All I had to do was drop the pack to a delta of 5v from my input. FYI. I'm buying another of these. They work very well if (I) know what they are supposed to do.

Hi, I cannot seem to get the charging part of this bms to work. If you have any insight, I would appreciate it. On the software, I used the Polymer Normal defaults. Ver 3.1.1026. Android phone 1-7 cells. Lithium Poly. 4.2v, 3920mAh 7x 4.2 = 29.4 I have a pwr supply at 29.5 v, .5A...

I have about 300 Lithium Polymer batteries that recently fell off a truck. I want to make a 24v battery out of them. All in great shape and not very old. I do not yet have solar panels. That will come soon. The plan is to run a high efficiency window AC unit (120 vAC) from noon until dark every...