Abstract: A system of replaceable and configurable battery power modules (BPMs) operatively connected to a smart management module (SMM) is provided. Each BPM can include a plurality of battery cells (e.g., Lithium) wired together in series and/or parallel. The BPMS are independently capable of cell balancing, monitoring and recording critical information about cell performance. The BPMs, wired together in series and/or parallel are connected to the SMM to form a cumulative battery pack. The performance and control limit information from each BPM can be used by the SMM to properly control the charging and discharging of the complete battery pack.