Here’s an early concept design for the aluminium frame for the trailer with the roughly correct size of the module in the bottom.
I disassembled the positive terminal plastic housing, as I need to get to both B- and B+ to charge and discharge, as I want to do a capacity test, which is gonna take quite a while with a 150W load
I also broke into the enclosure where the balance lead connected to, it was the BMS.
Linear/Analog battery stack monitor ICs LTC6801 and LTC6802-2. These are older generation than the LTC6803-3 that I’m using on the FlexiBMS.
Also, when people complain about slow balance currents. This sucker has 56Ohm bleed resistors, where the FlexiBMS is using 47Ohms, so technically this is a slower balancer than the FlexiBMS, but it doesn’t have the same size constraints as the Lite does.
I’ll 3d-print a custom holder for the balance breakout board and probably integrate the FlexiBMS on top of it as well into the same enclosure. It’ll be a nice contained package then.
EDIT: Still need to get to that negative terminal, but I don’t see any easy way to get rid of the enclosure around it… might have to go a bit more destructive on it.