@DerpsyDoodler .... The software updates Chargery introduced were very effective on all but the BMS16T which even after the updates and using external power has some cell voltage inaccuracies.
I have a BMS8T that I am very happy with after the updates .... For what I want to do, the BMS8T perfectly fits. I'm not switching the battery power as most people are, I'm remotely controlling the charge and load devices with low power relays and SSR's. I am going to have redundancy in all the protections, but just think it is better to control devices in such a way that only a low current device is required for the switching.
So .... I don't have any experience with the DCC's .... some are having good success with them and some not. The issues people are having with them are with the built in pre-charge ..... other than that I haven't heard anything but good reports on them .... it would be possible to use a separate pre-charge strategy like one would use if they just had a high powered SSR to mitigate that issue.
They are supposed to be introducing their new line pretty soon and it will be interesting to see what they come out with. They seem to be taking more time testing this new one than they did with the DCC when they introduced it.
I have the JBD Overkill solar BMS in my 100 AH pack that is only going to be used for providing power to my boat electronics at a low current draw .... but when you get into applications that require control of higher power loads, it just seems counter intuitive to me to be switching that power with a BMS when it isn't necessary. People are using larger and larger SSR type BMS and I just don't see the necessity for it in most cases. Some have multiple packs in parallel and design in that situation becomes a little more complex .... but I'm not dealing with that situation.