The PS5164 module is a complete smart battery controller subsystem based on the Microchip PS501 field reprogrammable battery manager with patented Accuron® technology. The module is designed to operate in a battery pack consisting of four (4) series connected Li-based cells. The module consists of the Microchip PS501 battery manager IC with a four-LED SOC display and an optional connection for an external thermistor. 1.1 Quick Start – Pack Assembly Follow these directions to assemble a pack with the PS5164 module. • Use standard precautions when handling static sensitive devices. • Modules should be connected to battery cells in the order indicated below to insure proper start-up and operation. Wires should be attached to the modules first and then connected to the battery cells as instructed. • The connection sequence is critical to successful use of the PS501 family of CMOS ASICs. The pack positive should be securely connected to the module first, followed by the intermediate cells from most positive to least positive and finally, pack negative.