Dissecting A Smart Battery – Part 2

In part 1 of Dissecting A Smart Battery I mentioned that smart batteries have contained within them specialized hardware that when working in concert provides the power necessary to run a device such as a PDA, digital camera, or ipod player. Continuing the dissection of a smart battery this article of the series will look at the smart battery’s fuse, charge and discharge FETs , the cell pack, and the sense resistor (RSENSE) to discover what role they each play within the smart battery.

Before we begin let’s just recap some of the specialized hardware within the smart battery:

1. the connector
2. the fuse
3. the charge and discharge FETs
4. the cell pack
5. the sense resistor (RSENSE)
6. the primary and secondary protection ICs
7. the fuel-gauge IC
8. the thermistor
9. the pc board
10. the EEPROM
11. the SMBus

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© Dan Hagopian You have permission to publish this article electronically or in print, free of charge, as long as the bylines are included with link. Dan Hagopian of www.batteryship.com is a known electronics author that specializes in portable power gadgets. His work can be found on the BatteryShip blog at www.batteryeducation.com He frequently writes about pda batteries, ipod batteries, general battery technology for our mobile world, new fuel cell technology and interesting power related inventions. For further information please visit www.batteryship.com where you can also find PDA battery replacement kits, smartphone batteries, twoway radio batteries, barcode scanner batteries, camera batteries, and camcorder batteries.

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