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Just as a follow-up. I did replace the 6S-21S BMS (direct from JBD) with the 16S one from Overkill Solar (after a very nice conversation with them). It worked perfectly the first time and continues to work well. I now use their App (Android) and had to re-program the parameters for my pack...

Yes, thank you. I had already contacted Overkill Solar this morning. The default settings in the JBD unit I received had 100% at 4.2V down to 20% at 3.4V which were way off (and way off from the settings documented in the Overkill Solar write-up). I attempted to change them to the settings in...

Apparently I have burned-up two JBD AP21S01 6S-to-21S BMS systems. In both cases, it happened when programming parameters using the XiaoXiang APP (For example, I was adjusting the 20/40/60/80% points). I got smoke from overheating the first few channels of the sensing/controlling circuits by...

Yep...somehow I missed that one in the spec sheet. I think I can configure the panels for the higher voltage. Your input is helpful so I'll push this as high as possible. This is a mobile Travel Trailer application where there will be fixed panels on top and a second MPPT controller for a...

The Specification says the PV panels must be between 120V and 250V. The high end is great, the low end is still quite high for small systems built from portable panels. Does anyone have any experience with this low-end? Does the 48V system still operate when the voltage is lower than 120V...