Additional insulation for the heater. It is required at the beginning and the end of the battery stack (the arrangement can be seen on the second image, left and right).
The PCB is made from FR4 material.
FR-4, or FR4, refers to a class of flame-retardant composite materials made from epoxy resin and fiberglass cloth. The abbreviation FR stands for flame retardant and meets the requirements of UL94V-0.
This Product was added to our catalogue on 16/09/2021.