Smart Battery chips

 

Battery CPU EEPROM
Dell C600 ... (type: 75UYF) M37516 SL220 (alternative 93C56)
Dell C600 ...  (type: 66Whr) BQ8011 01M (alternative 24C01)
Acer Aspire 5535 BQ29312A  
Acer AOD260 BQ8050