Abstract: A battery management system for use in charging a rechargeable battery is disclosed. The battery management system comprises a controller and a temperature sensor, wherein the temperature sensor is configured to provide a temperature signal based on a temperature of the rechargeable battery, and wherein the controller is configured to control a charging current for charging the rechargeable battery based on the temperature signal. In response to the temperature signal indicating that the temperature exceeds a first threshold temperature signal value the charging current is tapered down as a function of increasing temperature.

Abstract: A battery pack enclosure for holding a stack of batteries is disclosed. The battery pack enclosure comprises a lid section and a base section configured to hold a plurality of wall sections therebetween to encapsulate the stack of batteries. The sections comprise mutually complementary mating portions for mating with adjacent sections of the battery pack enclosure. The number of wall sections can be chosen to adjust the dimensions of the battery pack enclosure.