Most block-type LiFeYPO4 cells, from 40 Ah and up. As the boards are mounted on the positive pole, different lenghts of thick copper-wire to the negative pole adjusts for different cell-dimensions.
As all voltage-levels are user programmable (between 2 and 5 Volts) other battery types can be used too. Off course, battery technology is changing rapidly, and we are always prepared to help you solve particular problems.
Yes, off course, although the BMS-boards use << 100 uA, which is roughly 1 / 50-th (!) of the self-discharge-current for a 90 Ah LiFeYPO4-cell.
The IN and OUT Boards are using very little current: less then 2 mA. Low enough to stay alive for years (!) on an average battery.
A maximum of 255 cells can be used, albeit that the time needed to get a message through that many cells slows down the response-time of the individual cell voltages.
Each BMS-board is equipped with a so-called 'programmable current-source'. Bypass-current is set to 1 Amp, irrespective of the bypass-voltage chosen.
The balancing happens when the battery pack is almost full of energy, this called "Top Balancing"
When the cell voltage gets above the selectable Bypass value the balanced-process will start dissipating 1 Amp until all cells have reached the bypass-voltage set.