Please see the DC2100B for any new designs.
Demonstration Circuit DC2100A-C is a stand-alone Active Cell Balancer for balancing up to 12 Li-Ion cells; it also is the master controller board when used with DC2100B-D slave boards for a stackable battery balancing solution. It consists of the LTC6804-2 Multicell Addressable Battery Stack Monitor and two LTC3300-1 Active Cell Balancers. It contains a PIC18F47J53 microcontroller, the LTM2884 Isolated USB Transceiver, and an LTC6820 isoSPI Interface IC to facilitate isolated communication with the LTC6804-2 and the LTC3300-1 ICs. Up to 7 DC2100B-D boards can be connected to the DC2100A-C to build a stacked system of 8 total boards.